{"id":5020,"date":"2026-05-08T14:50:34","date_gmt":"2026-05-08T14:50:34","guid":{"rendered":"https:\/\/codfellow.com\/?p=5020"},"modified":"2026-05-08T14:50:36","modified_gmt":"2026-05-08T14:50:36","slug":"common-technical-seo-issues-developers-create","status":"publish","type":"post","link":"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/","title":{"rendered":"Common Technical SEO Issues Developers Create And How to Fix Them Fast"},"content":{"rendered":"\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>The most common technical SEO issue developers create includes poor website crawlability, broken internal links, core web vitals issues, JavaScript rendering errors, and duplicate content. These mistakes hide in the code and silently kill your Google rankings. Regular technical audits and fast fixes can recover lost traffic quickly.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>You launched your website. It looks beautiful. But your rankings are dropping.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#What_Is_a_Technical_SEO_Issue\" >What Is a Technical SEO Issue?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Can_a_technical_SEO_issue_affect_a_brand-new_website\" >Can a technical SEO issue affect a brand-new website?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_is_a_technical_SEO_issue_different_from_on-page_SEO_problems\" >How is a technical SEO issue different from on-page SEO problems?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Do_technical_SEO_issues_always_cause_ranking_drops\" >Do technical SEO issues always cause ranking drops?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Why_Developers_Accidentally_Hurt_SEO\" >Why Developers Accidentally Hurt SEO<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Should_every_developer_learn_SEO\" >Should every developer learn SEO?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#What_is_the_most_common_developer_mistake_in_SEO\" >What is the most common developer mistake in SEO?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_can_developers_and_SEOs_work_better_together\" >How can developers and SEOs work better together?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#The_Most_Common_Technical_SEO_Issues_Developers_Create\" >The Most Common Technical SEO Issues Developers Create<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Poor_Website_Crawlability\" >Poor Website Crawlability<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_do_I_check_website_crawlability_for_free\" >How do I check website crawlability for free?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Does_the_crawl_budget_matter_for_small_websites\" >Does the crawl budget matter for small websites?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#What_is_the_fastest_way_to_fix_a_crawlability_block\" >What is the fastest way to fix a crawlability block?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Broken_Internal_Links\" >Broken Internal Links<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_do_I_find_all_broken_internal_links_on_my_website\" >How do I find all broken internal links on my website?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Do_broken_internal_links_really_hurt_rankings\" >Do broken internal links really hurt rankings?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_often_should_I_check_for_broken_links\" >How often should I check for broken links?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Core_Web_Vitals_Issues_Slowing_the_Website\" >Core Web Vitals Issues Slowing the Website<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Do_core_web_vitals_issues_directly_affect_Google_rankings\" >Do core web vitals issues directly affect Google rankings?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#What_is_the_easiest_Core_Web_Vitals_issue_to_fix_first\" >What is the easiest Core Web Vitals issue to fix first?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_do_I_monitor_core_web_vitals_over_time\" >How do I monitor core web vitals over time?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#JavaScript_Rendering_Problems\" >JavaScript Rendering Problems<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Does_Google_render_JavaScript_at_all\" >Does Google render JavaScript at all?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Is_Nextjs_good_for_SEO\" >Is Next.js good for SEO?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_do_I_test_if_Google_can_read_my_JavaScript_content\" >How do I test if Google can read my JavaScript content?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Crawlability_and_Indexability_Problems\" >Crawlability and Indexability Problems<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_do_I_fix_a_page_that_is_not_being_indexed\" >How do I fix a page that is not being indexed?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_long_does_it_take_Google_to_index_a_new_page\" >How long does it take Google to index a new page?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Bad_Mobile_Optimization\" >Bad Mobile Optimization<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#What_is_mobile-first_indexing\" >What is mobile-first indexing?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_do_I_check_if_my_site_passes_mobile-first_indexing\" >How do I check if my site passes mobile-first indexing?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Do_pop-ups_hurt_mobile_SEO\" >Do pop-ups hurt mobile SEO?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Duplicate_Content_Technical_SEO_Problems\" >Duplicate Content Technical SEO Problems<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Does_duplicate_content_cause_a_penalty\" >Does duplicate content cause a penalty?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#What_is_the_best_way_to_fix_duplicate_content\" >What is the best way to fix duplicate content?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Can_my_own_pages_create_duplicate_content_problems\" >Can my own pages create duplicate content problems?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-37\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Weak_Site_Architecture\" >Weak Site Architecture<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-38\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#What_is_an_orphan_page_in_SEO\" >What is an orphan page in SEO?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-39\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_many_clicks_deep_should_a_page_be\" >How many clicks deep should a page be?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-40\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Can_flat_site_architecture_hurt_SEO\" >Can flat site architecture hurt SEO?<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-41\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_to_Check_Technical_SEO_Issues_Like_an_Expert\" >How to Check Technical SEO Issues Like an Expert<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-42\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Step_1_Start_with_Google_Search_Console\" >Step 1: Start with Google Search Console<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-43\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Step_2_Crawl_with_Screaming_Frog\" >Step 2: Crawl with Screaming Frog<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-44\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Step_3_Run_PageSpeed_Insights\" >Step 3: Run PageSpeed Insights<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-45\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_long_does_a_technical_SEO_audit_take\" >How long does a technical SEO audit take?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-46\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Can_I_do_a_technical_SEO_audit_myself_without_experience\" >Can I do a technical SEO audit myself without experience?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-47\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#How_often_should_I_run_a_technical_SEO_audit\" >How often should I run a technical SEO audit?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-48\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Technical_SEO_Fix_Priority_List\" >Technical SEO Fix Priority List<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-49\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Here_is_the_priority_list_I_follow\" >Here is the priority list I follow:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-50\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Real-Life_SEO_Audit_Example\" >Real-Life SEO Audit Example<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-51\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Pro_Tips_Most_Developers_Ignore\" >Pro Tips Most Developers Ignore<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-52\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Conclusion\" >Conclusion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-53\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Related_FAQ\" >Related FAQ:<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-54\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Q_What_is_the_biggest_technical_SEO_issue_on_websites\" >Q: What is the biggest technical SEO issue on websites?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-55\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Q_Can_broken_internal_links_affect_rankings\" >Q: Can broken internal links affect rankings?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-56\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Q_Why_are_Core_Web_Vitals_important_for_SEO\" >Q: Why are Core Web Vitals important for SEO?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-57\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Q_How_do_I_check_website_crawlability\" >Q: How do I check website crawlability?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-58\" href=\"https:\/\/codfellow.com\/common-technical-seo-issues-developers-create\/#Q_Can_JavaScript_hurt_SEO\" >Q: Can JavaScript hurt SEO?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<p>Sound familiar? I hear this from clients every single week.<\/p>\n\n\n\n<p>The website looks polished on the outside. Clean design. Fast animations. Nice fonts. But under the hood, there is a silent technical SEO issue killing your Google visibility.<\/p>\n\n\n\n<p>I have audited hundreds of websites over the past five years. And I keep seeing the same story. A developer builds a stunning site. They focus on design, speed, and user experience. But they accidentally break how Google crawls and reads the site.<\/p>\n\n\n\n<p>Google does not rank websites based on looks. It ranks websites based on how well it can crawl, understand, and trust them.<\/p>\n\n\n\n<p>I once audited a client&#8217;s e-commerce site that had zero organic traffic for three months after a redesign. The developer had accidentally left Disallow: \/ in the robots.txt file. Google was blocked from crawling the entire website. One tiny line of code. Three months of lost revenue.<\/p>\n\n\n\n<p>That is the power of a technical SEO problem. Small mistake. Massive impact.<\/p>\n\n\n\n<p>In this guide, I will walk you through every major technical SEO issue that developers create. I will explain why it happens and exactly how to fix it fast. No confusing jargon. Just clear, practical steps.<\/p>\n\n\n\n<p>Let&#8217;s start from the beginning.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_a_Technical_SEO_Issue\"><\/span><strong>What Is a Technical SEO Issue?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>A technical SEO issue is any problem in your website&#8217;s code, structure, or server settings that stops Google from crawling, reading, or ranking your pages correctly. These are not content problems. They are hidden backend errors that silently damage your search performance.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Think of your website like a bookshop. The content is in your books. But if the shelves are broken, the lights are off, and the door is locked, no customer can find your books.<\/p>\n\n\n\n<p>That is exactly what a technical SEO issue does. It blocks Google from getting inside your site.<\/p>\n\n\n\n<p>Most website owners never see these problems. They are buried in code, server settings, and page structure. You need tools and experience to find them.<\/p>\n\n\n\n<p><strong>Here is the key difference people miss:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Content problems = thin articles, wrong keywords, poor writing<\/li>\n\n\n\n<li>Technical SEO problems = crawling errors, slow speed, broken structure, wrong signals to Google<\/li>\n<\/ul>\n\n\n\n<p>Both hurt rankings. But technical problems hit harder and faster. You can publish great content every week. But if Google cannot crawl your site properly, that content will never rank.<\/p>\n\n\n\n<p><strong>The good news is this:<\/strong> most technical SEO issues are fixable. Once you know what to look for, the <a href=\"https:\/\/codfellow.com\/technical-seo-audit-complete-checklist\/\">technical SEO audit process<\/a> becomes straightforward.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_a_technical_SEO_issue_affect_a_brand-new_website\"><\/span><strong>Can a technical SEO issue affect a brand-new website?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Absolutely. New websites often have setup mistakes from the very beginning. Common issues include incorrect robots.txt settings, missing sitemaps, and no canonical tags. These mistakes slow down indexing and early rankings.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_is_a_technical_SEO_issue_different_from_on-page_SEO_problems\"><\/span><strong>How is a technical SEO issue different from on-page SEO problems?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>On-page SEO is about your content quality and keyword use. Technical SEO is about how your website is built and structured. Both matter, but technical problems are usually invisible and harder to spot without tools.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Do_technical_SEO_issues_always_cause_ranking_drops\"><\/span><strong>Do technical SEO issues always cause ranking drops?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Not always immediately. Some issues build up over time. But serious ones, like blocking crawlers or having thousands of broken links, can cause sudden and significant ranking drops.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Developers_Accidentally_Hurt_SEO\"><\/span><strong>Why Developers Accidentally Hurt SEO<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Developers focus on building fast, functional, and beautiful websites. They are code experts, not search engine optimisation. This gap in knowledge leads to accidental technical SEO damage that can take months to discover and fix.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"572\" src=\"https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Why-Developers-Accidentally-Hurt-SEO-1024x572.webp\" alt=\"developer making coding mistakes that hurt SEO and website ranking concept illustration\" class=\"wp-image-5035\" title=\"\" srcset=\"https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Why-Developers-Accidentally-Hurt-SEO-1024x572.webp 1024w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Why-Developers-Accidentally-Hurt-SEO-300x168.webp 300w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Why-Developers-Accidentally-Hurt-SEO-768x429.webp 768w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Why-Developers-Accidentally-Hurt-SEO-150x84.webp 150w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Why-Developers-Accidentally-Hurt-SEO.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption><\/figcaption><\/figure>\n\n\n\n<p>I do not blame developers for these mistakes. I genuinely do not. They are great at what they do. But their job is to build websites that work. Not websites that rank.<\/p>\n\n\n\n<p>SEO lives in a completely different world from web development. And most developers simply were not trained to think about it.<\/p>\n\n\n\n<p><strong>Here is what developers typically focus on:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Making the website look great on all screen sizes<\/li>\n\n\n\n<li>Building smooth animations and interactions<\/li>\n\n\n\n<li>Using modern frameworks like React, Vue, or Next.js<\/li>\n\n\n\n<li>Improving page loading performance from a development perspective<\/li>\n\n\n\n<li>Pushing the project live before the deadline<\/li>\n<\/ul>\n\n\n\n<p><strong>What they often miss:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Whether Google can crawl every important page<\/li>\n\n\n\n<li>How JavaScript affects content indexing<\/li>\n\n\n\n<li>Whether canonical tags are set correctly<\/li>\n\n\n\n<li>If internal linking passes authority to the right pages<\/li>\n\n\n\n<li>Whether the site structure makes sense to a search engine<\/li>\n<\/ul>\n\n\n\n<p>I have seen developers accidentally block entire websites in robots.txt before launch and forget to remove it. I have seen staging environments accidentally get indexed. I have seen React websites where Google could not read a single word of content because JavaScript was rendering everything client-side.<\/p>\n\n\n\n<p>These are not careless people. These are talented developers who simply did not know what Google needed from their code.<\/p>\n\n\n\n<p>That is why collaboration between developers and SEO specialists is so important. And that is exactly why you are reading this article.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Should_every_developer_learn_SEO\"><\/span><strong>Should every developer learn SEO?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>They do not need to become SEO experts. But understanding the basics, like how crawlers work, what robots.txt does, and why page speed matters, can prevent most major technical SEO problems.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_most_common_developer_mistake_in_SEO\"><\/span><strong>What is the most common developer mistake in SEO?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Leaving noindex tags or disallow rules in place after launch. This happens more often than you would believe. A staging site gets protected and then nobody removes the block when the site goes live.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_can_developers_and_SEOs_work_better_together\"><\/span><strong>How can developers and SEOs work better together?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Create a pre-launch SEO checklist that both teams follow. Before any site goes live, an SEO review should be mandatory. This one step prevents the majority of technical SEO damage.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_Most_Common_Technical_SEO_Issues_Developers_Create\"><\/span><strong>The Most Common Technical SEO Issues Developers Create<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>The most common technical SEO issues include poor website crawlability, broken internal links, Core Web Vitals problems, JavaScript rendering errors, indexability mistakes, bad mobile optimisation, duplicate content, and weak site architecture. Each one can silently reduce your organic traffic.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"572\" data-src=\"https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/The-Most-Common-Technical-SEO-Issues-Developers-Create-1024x572.webp\" alt=\"developers causing technical SEO issues affecting website ranking and crawlability problems illustration\" class=\"wp-image-5038 lazyload\" title=\"\" data-srcset=\"https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/The-Most-Common-Technical-SEO-Issues-Developers-Create-1024x572.webp 1024w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/The-Most-Common-Technical-SEO-Issues-Developers-Create-300x168.webp 300w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/The-Most-Common-Technical-SEO-Issues-Developers-Create-768x429.webp 768w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/The-Most-Common-Technical-SEO-Issues-Developers-Create-150x84.webp 150w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/The-Most-Common-Technical-SEO-Issues-Developers-Create.webp 1200w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/572;\" \/><figcaption><\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Poor_Website_Crawlability\"><\/span><strong>Poor Website Crawlability<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Website crawlability refers to how easily Google&#8217;s bots can access and move through your pages. Poor crawlability means Google misses important pages and cannot rank them, no matter how good your content is.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>When I audit a website, crawlability is always the first thing I check. Everything else depends on it. If Google cannot crawl your pages, nothing else matters.<\/p>\n\n\n\n<p>Crawlability problems usually come from three places. Bad robots.txt rules. Poor site structure. And pages buried too deep for Google to discover.<\/p>\n\n\n\n<p>Here is how it happens. A developer blocks crawlers during development to protect the staging site. They push the site live. The robots.txt block stays. Google cannot enter. Rankings disappear.<\/p>\n\n\n\n<p>Or they build a site with pages five or six clicks deep from the homepage. Google&#8217;s crawler has a limited crawl budget. It will not dig that deep for most websites. Those pages never get found.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Check robots.txt at yourdomain.com\/robots.txt. after every launch<\/li>\n\n\n\n<li>Keep important pages within three clicks of the homepage<\/li>\n\n\n\n<li>Submit an XML sitemap to Google Search Console<\/li>\n\n\n\n<li>Avoid blocking CSS and JavaScript files in robots.txt<\/li>\n<\/ul>\n\n\n\n<p>You can learn more about <a href=\"https:\/\/codfellow.com\/what-is-a-robots-txt-file\/\">how robots.txt affects crawling<\/a> and why even small mistakes in this file can block your entire site.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Pro Tip: Always test your robots.txt file using Google Search Console&#8217;s robots.txt. Tester after every site update. One wrong line can block Google from your entire domain.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_do_I_check_website_crawlability_for_free\"><\/span><strong>How do I check website crawlability for free?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Use Google Search Console. Go to the Coverage report to see which pages are indexed and which are blocked. Screaming Frog is also excellent for deeper crawl analysis.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Does_the_crawl_budget_matter_for_small_websites\"><\/span><strong>Does the crawl budget matter for small websites<\/strong>?<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>For sites under 500 pages, crawl budget is rarely a major issue. But for large e-commerce or news sites with thousands of pages, managing crawl budget becomes critical to ensure important pages get crawled regularly.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_fastest_way_to_fix_a_crawlability_block\"><\/span><strong>What is the fastest way to fix a crawlability block?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Open your robots.txt file and remove any Disallow rules that are blocking important pages or the whole site. Then request a recrawl through Google Search Console. Google can reindex your pages within days.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Broken_Internal_Links\"><\/span><strong>Broken Internal Links<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Broken internal links are links that point to deleted or moved pages, returning a 404 error. They waste your crawl budget, confuse Google, and prevent link authority from flowing through your site correctly.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>I had a client who lost rankings on twenty key product pages. We ran an audit and found over four hundred broken internal links pointing to pages that had been deleted during a site migration. Google was spending its crawl budget on dead pages instead of the important ones.<\/p>\n\n\n\n<p>After fixing those links, rankings recovered within six weeks.<\/p>\n\n\n\n<p>Broken links happen in three common situations. Pages get deleted. URLs change during redesigns. CMS plugins or themes generate dynamic links that break over time.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Problem<\/td><td>SEO Impact<\/td><td>Fix<\/td><\/tr><tr><td>Links to deleted pages<\/td><td>Wastes crawl budget, loses authority<\/td><td>Redirect or update the link<\/td><\/tr><tr><td>Links to old URLs after redesign<\/td><td>404 errors, broken authority flow<\/td><td>Update all internal links post-migration<\/td><\/tr><tr><td>Anchor text links in old blog posts<\/td><td>Confuses Google about site structure<\/td><td>Run monthly link audits with Screaming Frog<\/td><\/tr><tr><td>Redirect chains (A to B to C)<\/td><td>Slows crawling, dilutes authority<\/td><td>Fix chains to direct 301 redirects<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Understanding <a href=\"https:\/\/codfellow.com\/what-is-website-indexing\/\">how website indexing works<\/a> helps you see why broken links are so damaging. Pages that cannot be reached cannot be indexed.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_do_I_find_all_broken_internal_links_on_my_website\"><\/span><strong>How do I find all broken internal links on my website?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Use Screaming Frog SEO Spider for free for up to 500 URLs. It crawls your entire site and flags every 404 error. For larger sites, Semrush and Ahrefs also have excellent broken link reports.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Do_broken_internal_links_really_hurt_rankings\"><\/span><strong>Do broken internal links really hurt rankings?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Yes, significantly. Broken links waste your crawl budget and break the flow of link equity through your site. Pages with important content can become isolated and lose ranking authority.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_often_should_I_check_for_broken_links\"><\/span><strong>How often should I check for broken links?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Run a broken link audit at least once a month. If you frequently delete or update pages, check weekly. Set up Google Search Console alerts so you are notified when new 404 errors appear.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Core_Web_Vitals_Issues_Slowing_the_Website\"><\/span><strong>Core Web Vitals Issues Slowing the Website<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Core Web Vitals issues are performance problems that make your website feel slow or unstable for users. Google measures LCP, CLS, and INP. Poor scores directly harm your rankings because Google uses page experience as a ranking signal.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"572\" data-src=\"https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Core-Web-Vitals-Issues-Slowing-the-Website-1024x572.webp\" alt=\"core web vitals issues slowing website performance showing poor speed layout shift and loading delay concept illustrationSelect 76 more words to run Humanizer.\" class=\"wp-image-5040 lazyload\" title=\"\" data-srcset=\"https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Core-Web-Vitals-Issues-Slowing-the-Website-1024x572.webp 1024w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Core-Web-Vitals-Issues-Slowing-the-Website-300x168.webp 300w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Core-Web-Vitals-Issues-Slowing-the-Website-768x429.webp 768w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Core-Web-Vitals-Issues-Slowing-the-Website-150x84.webp 150w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Core-Web-Vitals-Issues-Slowing-the-Website.webp 1200w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/572;\" \/><figcaption><\/figcaption><\/figure>\n\n\n\n<p>Slow websites lose trust instantly. Think about your own experience. You click a link. The page takes four seconds to load. You leave. That is exactly what millions of users do every day.<\/p>\n\n\n\n<p>Google knows this. That is why it built Core Web Vitals into its ranking algorithm.<\/p>\n\n\n\n<p><strong>Here are the three metrics developers most often break:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>LCP (Largest Contentful Paint): How fast the main content loads. Target: under 2.5 seconds. Developers often break this by using unoptimised hero images or lazy-loading the main content block.<\/li>\n\n\n\n<li>CLS (Cumulative Layout Shift): How much the page jumps around while loading. Target: under 0.1. Developers break this by adding images without defined dimensions or injecting ads that push content down.<\/li>\n\n\n\n<li>INP (Interaction to Next Paint): How quickly the page responds to clicks and taps. Target: under 200ms. Heavy JavaScript blocking the main thread is the usual culprit here.<\/li>\n<\/ul>\n\n\n\n<p>I audited a client&#8217;s landing page that had a CLS score of 0.45. Their conversion rate was dropping. The problem was a font file loading late, causing text to jump when it swapped. We preloaded the font. CLS dropped to 0.04. Bounce rate dropped by 18%.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Compress and properly size all images. Use next-gen formats like WebP.<\/li>\n\n\n\n<li>Preload critical fonts and above-the-fold resources<\/li>\n\n\n\n<li>Remove or defer render-blocking JavaScript and CSS<\/li>\n\n\n\n<li>Set explicit width and height on all images and video embeds<\/li>\n\n\n\n<li>Use a CDN to reduce server response time<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Pro Tip: Use Google PageSpeed Insights to test Core Web Vitals on both mobile and desktop. The report gives you specific recommendations for every issue. Fix the mobile score first since Google uses mobile-first indexing.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Do_core_web_vitals_issues_directly_affect_Google_rankings\"><\/span><strong>Do core web vitals issues directly affect Google rankings?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Yes, Google confirmed Core Web Vitals as a ranking factor in 2021. Poor scores can cause ranking drops, especially in competitive niches where many sites have similar content quality.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_easiest_Core_Web_Vitals_issue_to_fix_first\"><\/span><strong>What is the easiest Core Web Vitals issue to fix first?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>CLS is usually the quickest win. Add explicit width and height attributes to all images. This one change alone can dramatically improve layout stability and your CLS score.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_do_I_monitor_core_web_vitals_over_time\"><\/span><strong>How do I monitor core web vitals over time?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Google Search Console has a Core Web Vitals report that shows real-user data from Chrome users. Check it monthly and set up email alerts for any URLs moving to &#8216;poor&#8217; status.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"JavaScript_Rendering_Problems\"><\/span><strong>JavaScript Rendering Problems<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>JavaScript rendering problems happen when Google&#8217;s crawler cannot read content that loads dynamically through JavaScript. If your key content or links are rendered client-side, Google may index blank pages or miss critical information entirely.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>This is the hidden danger of modern JavaScript frameworks. React, Vue, Angular, and Next.js are powerful tools. But if they are not configured correctly for SEO, Google may see nothing when it visits your pages.<\/p>\n\n\n\n<p>Here is a real example. I audited a SaaS company&#8217;s React website. Their homepage HTML contained almost no visible text when crawled. All the product descriptions, headlines, and links were injected by JavaScript after page load. Google&#8217;s crawler was indexing a nearly empty page.<\/p>\n\n\n\n<p>The fix was server-side rendering. Once the pages were pre-rendered on the server, Google could read the full content immediately. Rankings for their main keywords jumped from page four to page one within two months.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use server-side rendering (SSR) or static site generation (SSG) for key pages<\/li>\n\n\n\n<li>Test how Google sees your page using URL Inspection in Google Search Console<\/li>\n\n\n\n<li>Avoid putting important content or navigation links inside JavaScript-only components<\/li>\n\n\n\n<li>Use the Google Mobile-Friendly Test to see what Google actually renders<\/li>\n\n\n\n<li>Check that internal links are in standard HTML anchor tags, not JavaScript event handlers<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Does_Google_render_JavaScript_at_all\"><\/span><strong>Does Google render JavaScript at all?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Yes, but not immediately. Google adds JavaScript pages to a rendering queue that can take days or weeks. Critical pages should not depend on JavaScript rendering for their core content to be discovered.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Is_Nextjs_good_for_SEO\"><\/span><strong>Is Next.js good for SEO?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Next.js is excellent for SEO when using SSR or SSG modes. These modes serve pre-rendered HTML to crawlers immediately. Avoid pure client-side rendering for pages you want to rank.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_do_I_test_if_Google_can_read_my_JavaScript_content\"><\/span><strong>How do I test if Google can read my JavaScript content?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Use the URL inspection tool in Google Search Console and click &#8216;Inspect Live URL&#8217;. Compare the rendered screenshot to what you see in your browser. Any missing content is invisible to Google.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Crawlability_and_Indexability_Problems\"><\/span><strong>Crawlability and Indexability Problems<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Crawlability means Google can access your pages. Indexability means Google can store and rank those pages. A page can be crawlable but not indexable. Both need to be correct for your content to appear in search results.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Most people confuse crawling and indexing. They are two completely different steps. And getting either one wrong can make your pages invisible.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Concept<\/td><td>What It Means<\/td><td>Common Mistake<\/td><\/tr><tr><td>Crawling<\/td><td>Google visits and reads your page<\/td><td>Blocking with robots.txt<\/td><\/tr><tr><td>Indexing<\/td><td>Google stores the page in its database<\/td><td>Google shows your page in the results<\/td><\/tr><tr><td>Ranking<\/td><td>Google shows your page in results<\/td><td>Poor content or technical signals<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>I see noindex mistakes constantly. A developer adds noindex to a page during testing. The page goes live. The tag stays. Google ignores the page permanently. One client had a noindex tag on their entire blog archive for eighteen months without knowing.<\/p>\n\n\n\n<p>Understanding <a href=\"https:\/\/codfellow.com\/what-is-a-canonical-tag-in-seo\/\">canonical tags<\/a> is also critical here. Wrong canonical signals tell Google to index a different URL than the one you want, splitting your ranking authority.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Search site: yourdomain.com in Google to see how many pages are indexed<\/li>\n\n\n\n<li>Check for noindex tags using Screaming Frog or Google Search Console Coverage report<\/li>\n\n\n\n<li>Make sure canonical tags point to the correct preferred URL<\/li>\n\n\n\n<li>Submit your XML sitemap to Google Search Console<\/li>\n<\/ul>\n\n\n\n<p>What does it mean when Google says a page is crawled but not indexed?<\/p>\n\n\n\n<p>It means Google visited your page but decided not to add it to its index. This usually happens because of thin content, noindex tags, canonical issues, or Google deciding the page is not valuable enough to rank.&nbsp;<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_do_I_fix_a_page_that_is_not_being_indexed\"><\/span><strong>How do I fix a page that is not being indexed?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>First, check for noindex tags and robots.txt blocks. If those are clean, check the canonical tag. If everything looks fine, improve the content quality and request indexing through Google Search Console.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_long_does_it_take_Google_to_index_a_new_page\"><\/span><strong>How long does it take Google to index a new page?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>It varies from hours to weeks. New websites or pages on low-authority domains can take much longer. Submitting URLs through Google Search Console and building internal links to new pages speeds up the process significantly.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Bad_Mobile_Optimization\"><\/span><strong>Bad Mobile Optimization<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Google uses mobile-first indexing, which means it primarily looks at your mobile website version to decide rankings. Poor mobile optimisation is a direct technical SEO issue that affects every page on your domain.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Here is the thing: most business owners do not realise. Google does not look at your desktop site first. It looks at your mobile site. If your mobile experience is broken, your rankings suffer even for desktop searches.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tap targets too small (buttons under 48&#215;48 pixels)<\/li>\n\n\n\n<li>Text that requires zooming to read<\/li>\n\n\n\n<li>Content wider than the screen viewport<\/li>\n\n\n\n<li>Interstitials and pop-ups that block content on mobile<\/li>\n\n\n\n<li>Layout shifts caused by unoptimized mobile images<\/li>\n<\/ul>\n\n\n\n<p>I audited a local business website where the mobile menu was completely broken. It overlapped the main content. Google&#8217;s mobile crawler rated the page as having poor page experience signals. After fixing the responsive layout, local rankings improved within three weeks.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use Google Mobile-Friendly Test to check every key page<\/li>\n\n\n\n<li>Set viewport meta tag correctly: content=&#8217;width=device-width, initial-scale=1.&#8217;<\/li>\n\n\n\n<li>Ensure all buttons and links have an adequate tap target size<\/li>\n\n\n\n<li>Test on real mobile devices, not just browser emulation<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_mobile-first_indexing\"><\/span><strong>What is mobile-first indexing?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>It means Google uses the mobile version of your site as the primary version for indexing and ranking. If your mobile site has less content or broken elements compared to the desktop, your overall rankings will suffer.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_do_I_check_if_my_site_passes_mobile-first_indexing\"><\/span><strong>How do I check if my site passes mobile-first indexing?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Use Google&#8217;s Mobile-Friendly Test tool at search.google.com\/test\/mobile-friendly. Also, check the mobile usability report in Google Search Console for specific errors.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Do_pop-ups_hurt_mobile_SEO\"><\/span><strong>Do pop-ups hurt mobile SEO?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Yes. Google penalises intrusive interstitials on mobile that cover the main content immediately after a user arrives from search. Use cookie banners and pop-ups that are small and dismissible.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Duplicate_Content_Technical_SEO_Problems\"><\/span><strong>Duplicate Content Technical SEO Problems<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Duplicate content happens when the same content appears on multiple URLs. Google gets confused about which version to rank. This splits your ranking signals and often results in none of the versions ranking well.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"572\" data-src=\"https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Duplicate-Content-Technical-SEO-Problems-1024x572.webp\" alt=\"duplicate content technical SEO problems showing same content appearing on multiple URLs causing ranking issues illustration\" class=\"wp-image-5043 lazyload\" title=\"\" data-srcset=\"https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Duplicate-Content-Technical-SEO-Problems-1024x572.webp 1024w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Duplicate-Content-Technical-SEO-Problems-300x168.webp 300w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Duplicate-Content-Technical-SEO-Problems-768x429.webp 768w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Duplicate-Content-Technical-SEO-Problems-150x84.webp 150w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Duplicate-Content-Technical-SEO-Problems.webp 1200w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/572;\" \/><figcaption><\/figcaption><\/figure>\n\n\n\n<p>Duplicate content is sneaky. You might not even know it is happening. Here are the most common ways it appears without you creating it:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HTTP vs HTTPS: http:\/\/yoursite.com and https:\/\/yoursite.com both load the same content<\/li>\n\n\n\n<li>WWW vs non-WWW: www.yoursite.com and yoursite.com are both accessible<\/li>\n\n\n\n<li>Trailing slashes: \/page\/ and \/page both return the same content<\/li>\n\n\n\n<li>URL parameters: \/products?sort=price and \/products?sort=name showing identical pages<\/li>\n\n\n\n<li>Paginated pages: \/category\/page\/1 duplicating \/category content<\/li>\n<\/ul>\n\n\n\n<p>Setting up <a href=\"https:\/\/codfellow.com\/what-is-schema-markup-in-seo\/\">schema markup correctly<\/a> alongside canonical tags helps Google understand your preferred content and avoid duplication signals.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Set up 301 redirects from HTTP to HTTPS and from WWW to non-WWW<\/li>\n\n\n\n<li>Add canonical tags to all paginated pages pointing to the main category page<\/li>\n\n\n\n<li>Use Google Search Console&#8217;s URL Inspection to check which version Google has indexed<\/li>\n\n\n\n<li>Block parameter URLs in robots.txt if they create duplicate pages<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Does_duplicate_content_cause_a_penalty\"><\/span><strong>Does duplicate content cause a penalty?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Google does not technically penalise for duplicate content unless it is clearly deceptive. But it does divide your ranking signals across multiple URLs. The result is that none of the duplicate pages rank as well as a single consolidated page would.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_best_way_to_fix_duplicate_content\"><\/span><strong>What is the best way to fix duplicate content?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Use canonical tags to tell Google which URL is the preferred version. For duplicate pages caused by URL parameters, either block them in robots.txt or add canonical tags pointing to the main URL.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_my_own_pages_create_duplicate_content_problems\"><\/span><strong>Can my own pages create duplicate content problems?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Yes. This happens constantly with e-commerce sites where the same product appears under multiple category paths. Each path creates a different URL for identical content. Canonical tags solve this problem cleanly.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Weak_Site_Architecture\"><\/span><strong>Weak Site Architecture<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Site architecture refers to how pages on your website are organised and connected. A weak structure buries important pages deep in the site, limits internal link authority flow, and makes it harder for Google to understand what your site is about.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Think of your website like a pyramid. Your homepage is at the top. Category pages sit one level below. Individual posts or product pages sit below that. Every important page should be reachable in three clicks or fewer.<\/p>\n\n\n\n<p>Developers often build websites without thinking about this hierarchy. They create pages and drop them wherever it makes sense for the design. The result is a flat or random structure that confuses Google.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Homepage links to main category pages<\/li>\n\n\n\n<li>Category pages link to all subcategories and important posts<\/li>\n\n\n\n<li>Every post links back to its parent category<\/li>\n\n\n\n<li>Related posts are cross-linked to spread authority<\/li>\n\n\n\n<li>Orphan pages (pages with no internal links pointing to them) are eliminated<\/li>\n<\/ul>\n\n\n\n<p>Understanding <a href=\"https:\/\/codfellow.com\/what-is-a-sitemap-in-seo\/\">what a sitemap does<\/a> helps here. A good sitemap mirrors your site architecture and tells Google exactly how your content is organised.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_an_orphan_page_in_SEO\"><\/span><strong>What is an orphan page in SEO?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>An orphan page is any page on your site with no internal links pointing to it. Google has no way to discover it through crawling. These pages often have zero organic traffic because Google cannot find or evaluate them.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_many_clicks_deep_should_a_page_be\"><\/span><strong>How many clicks deep should a page be?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Three clicks maximum for important pages. The deeper a page is from your homepage, the less crawl authority it receives. Homepage gets the most authority, and it flows outward through internal links.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_flat_site_architecture_hurt_SEO\"><\/span><strong>Can flat site architecture hurt SEO?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Flat architecture is not always bad for small sites. But for large sites with hundreds of pages, a flat structure with no clear hierarchy makes it harder for Google to understand topical relevance and distributes link equity poorly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Check_Technical_SEO_Issues_Like_an_Expert\"><\/span><strong>How to Check Technical SEO Issues Like an Expert<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>To check technical SEO issues professionally, start with Google Search Console to find crawl errors and indexing problems. Then use Screaming Frog to crawl your entire site. Finally, run PageSpeed Insights for performance. This three-tool combination finds 90% of all technical problems.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>When I audit a website for the first time, I follow the same process every single time. It takes about two hours for a site with fewer than a thousand pages. Here is exactly what I do.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_1_Start_with_Google_Search_Console\"><\/span><strong>Step 1: Start with Google Search Console<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>This is free and gives you real data about how Google sees your site. Check the coverage report for indexed and excluded pages. Check Core Web Vitals for speed issues. Check the mobile usability report for phone errors.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_2_Crawl_with_Screaming_Frog\"><\/span><strong>Step 2: Crawl with Screaming Frog<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Download <a href=\"https:\/\/www.screamingfrog.co.uk\/seo-spider\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Screaming Frog <\/a>SEO Spider. Run a full crawl of your domain. It will find broken links, missing meta tags, redirect chains, duplicate content, and much more. The free version handles up to 500 URLs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step_3_Run_PageSpeed_Insights\"><\/span><strong>Step 3: Run PageSpeed Insights<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Test your homepage and key landing pages at pagespeed.web.dev. Look at your Core Web Vitals scores and follow the specific recommendations for mobile and desktop separately.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Tool<\/td><td>Best For<\/td><td>Cost<\/td><\/tr><tr><td>Google Search Console<\/td><td>Indexing, crawl errors, Core Web Vitals, mobile issues<\/td><td>Free<\/td><\/tr><tr><td>Screaming Frog SEO Spider<\/td><td>Full site crawl, broken links, duplicate content, redirects<\/td><td>Free up to 500 URLs<\/td><\/tr><tr><td>Google PageSpeed Insights<\/td><td>Core Web Vitals, speed recommendations<\/td><td>Free<\/td><\/tr><tr><td>Ahrefs Site Audit<\/td><td>Advanced crawl analysis, orphan pages, link issues<\/td><td>Paid<\/td><\/tr><tr><td>Semrush Site Audit<\/td><td>Comprehensive technical audit with priority scoring<\/td><td>Paid<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Pro Tip: Always run your audit on the live site, not a staging environment. Real crawl errors, real speed data, and real indexing issues only show up when Google is actually crawling your production site.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_long_does_a_technical_SEO_audit_take\"><\/span><strong>How long does a technical SEO audit take?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>A basic audit using free tools takes two to four hours for a site under a thousand pages. A full professional audit for a large ecommerce site can take several days and includes manual testing alongside automated crawling.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_I_do_a_technical_SEO_audit_myself_without_experience\"><\/span><strong>Can I do a technical SEO audit myself without experience?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Yes, for basic issues. Google Search Console gives you clear reports that require no expertise to read. Follow the recommendations it provides. For deeper issues, working with an SEO specialist is recommended.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_often_should_I_run_a_technical_SEO_audit\"><\/span><strong>How often should I run a technical SEO audit?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Run a full audit every three to six months. Run a quick spot check after any major site update, redesign, or plugin change. Technical issues can appear overnight after small code changes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Technical_SEO_Fix_Priority_List\"><\/span><strong>Technical SEO Fix Priority List<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Not all technical SEO issues have the same urgency. Prioritize fixes based on how severely they impact crawling, indexing, and user experience. Fix crawling blocks and indexing errors first. Then move to speed and structure improvements.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"572\" data-src=\"https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Technical-SEO-Fix-Priority-List-1024x572.webp\" alt=\"technical SEO fix priority list showing ranked checklist of critical to low SEO issues for website optimization illustration\" class=\"wp-image-5045 lazyload\" title=\"\" data-srcset=\"https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Technical-SEO-Fix-Priority-List-1024x572.webp 1024w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Technical-SEO-Fix-Priority-List-300x168.webp 300w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Technical-SEO-Fix-Priority-List-768x429.webp 768w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Technical-SEO-Fix-Priority-List-150x84.webp 150w, https:\/\/codfellow.com\/wp-content\/uploads\/2026\/05\/Technical-SEO-Fix-Priority-List.webp 1200w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/572;\" \/><figcaption><\/figcaption><\/figure>\n\n\n\n<p>When clients come to me overwhelmed by a long list of audit errors, I always say the same thing. You do not need to fix everything at once. You need to fix the right things first.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Here_is_the_priority_list_I_follow\"><\/span><strong>Here is the priority list I follow:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Issue<\/td><td>SEO Damage Level<\/td><td>Fix Priority<\/td><td>Effort<\/td><\/tr><tr><td>Crawl block in robots.txt<\/td><td>Critical<\/td><td>Fix Today<\/td><td>5 minutes<\/td><\/tr><tr><td>Noindex on important pages<\/td><td>Critical<\/td><td>Fix Today<\/td><td>10 minutes<\/td><\/tr><tr><td>Broken internal links<\/td><td>High<\/td><td>This Week<\/td><td>1-4 hours<\/td><\/tr><tr><td>Missing XML sitemap<\/td><td>High<\/td><td>This Week<\/td><td>30 minutes<\/td><\/tr><tr><td>Core Web Vitals failures<\/td><td>High<\/td><td>This Month<\/td><td>Varies<\/td><\/tr><tr><td>JavaScript rendering issues<\/td><td>High<\/td><td>This Month<\/td><td>Developer needed<\/td><\/tr><tr><td>Duplicate content\/canonicals<\/td><td>Medium<\/td><td>This Month<\/td><td>2-4 hours<\/td><\/tr><tr><td>Mobile usability errors<\/td><td>Medium<\/td><td>This Month<\/td><td>1-2 hours<\/td><\/tr><tr><td>Weak site architecture<\/td><td>Medium<\/td><td>Next Quarter<\/td><td>Ongoing<\/td><\/tr><tr><td>Missing schema markup<\/td><td>Low<\/td><td>Next Quarter<\/td><td>2-4 hours<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>For a full structured approach, follow this <a href=\"https:\/\/codfellow.com\/technical-seo-audit-complete-checklist\/\">complete technical SEO audit checklist<\/a> that covers every item in order of priority.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Real-Life_SEO_Audit_Example\"><\/span><strong>Real-Life SEO Audit Example<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Real-world technical SEO audits reveal how small hidden problems cause massive ranking drops. A single crawl block, hundreds of broken links, or poor Core Web Vitals can wipe out months of content work. Fixing these issues consistently recovers traffic fast.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Let me tell you about one of the most eye-opening audits of my career.<\/p>\n\n\n\n<p>A client reached out to me in a panic. They ran a legal services website. Six months earlier, they had paid a developer to rebuild the entire site. Since then, their organic traffic had dropped by 64%.<\/p>\n\n\n\n<p>They had published new blog posts every week. They had built backlinks. Nothing worked. They thought their competitors had overtaken them.<\/p>\n\n\n\n<p><strong>What I found in the first twenty minutes:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The developer had used a staging subdomain during development. When launching, they had copied the robots.txt from staging. It still had Disallow: \/ blocking all crawlers.<\/li>\n\n\n\n<li>The new site had 1,247 broken internal links pointing to URLs from the old website structure<\/li>\n\n\n\n<li>Page speed on mobile was scoring 22 out of 100 on <a href=\"https:\/\/pagespeed.web.dev\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">PageSpeed Insights<\/a> due to unoptimized images and render-blocking scripts<\/li>\n\n\n\n<li>Sixteen key service pages had noindex tags left over from a template the developer had used<\/li>\n<\/ul>\n\n\n\n<p><strong>What we fixed and in what order:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Day 1:<\/strong> Removed the robots.txt block and requested a Google recrawl<\/li>\n\n\n\n<li><strong>Day 1:<\/strong> Removed all noindex tags from service pages<\/li>\n\n\n\n<li><strong>Week 1:<\/strong> Fixed all broken internal links using Screaming Frog exports<\/li>\n\n\n\n<li><strong>Week 2:<\/strong> Compressed all images, deferred non-critical JavaScript, preloaded fonts<\/li>\n\n\n\n<li><strong>Week 3:<\/strong> Rebuilt the XML sitemap and resubmitted to <a href=\"https:\/\/search.google.com\/search-console\/about\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Google Search Console<\/a><\/li>\n<\/ul>\n\n\n\n<p><strong>Results after sixty days:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Organic traffic recovered to 78% of pre-redesign levels<\/li>\n\n\n\n<li>Indexed pages went from 43 to 312<\/li>\n\n\n\n<li>Mobile PageSpeed score improved from 22 to 71<\/li>\n\n\n\n<li>Three service pages returned to page one rankings<\/li>\n<\/ol>\n\n\n\n<p>The content was never the problem. The website was invisible to Google because of technical mistakes made during a development handover. No amount of new content would have fixed that.<\/p>\n\n\n\n<p>This is why technical SEO is not optional. It is the foundation that everything else sits on.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Pro_Tips_Most_Developers_Ignore\"><\/span><strong>Pro Tips Most Developers Ignore<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>The most impactful technical SEO tips are the simplest ones that get overlooked. Consistent checks, clean code practices, and collaboration between developers and SEO teams prevent the majority of technical SEO damage before it happens.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>I have collected these from hundreds of audits. Small mistakes. Huge ranking losses.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Always test your staging site for SEO blocks before launch. Use a password or IP restriction to protect staging instead of robots.txt blocking.<\/li>\n\n\n\n<li>Never block CSS or JavaScript files in robots.txt. Google needs to render these files to understand your pages. Blocking them leads to poor rendering scores.<\/li>\n\n\n\n<li>Run an internal link audit every month. Links break when you delete or rename pages. Monthly checks catch them before they pile up into hundreds of broken links.<\/li>\n\n\n\n<li>Avoid too many redirects in a chain. Each redirect slows page load and loses a small amount of link equity. Redirect chains of three or more steps are a silent ranking killer.<\/li>\n\n\n\n<li>Use descriptive URLs from day one. Changing URLs later requires redirects. Get them right during development and save yourself months of cleanup.<\/li>\n\n\n\n<li>Set canonical tags on all paginated pages immediately. Pagination creates duplicate content issues that grow over time if not handled from the beginning.<\/li>\n\n\n\n<li>Keep plugin and theme updates on a schedule. Outdated plugins can inject broken scripts or generate incorrect structured data that confuses Google.<\/li>\n<\/ul>\n\n\n\n<p>Understanding <a href=\"https:\/\/codfellow.com\/what-is-website-indexing\/\">what website indexing means<\/a> will help developers and SEOs collaborate on indexability from the start, not as an afterthought.\u00a0<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Pro Tip: Create a simple Google Sheets technical SEO health tracker. Log your Core Web Vitals, indexed page count, and broken links every month. Trends in this data reveal problems before they cause ranking drops.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><strong>Conclusion<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The most frustrating thing in SEO is this. You can publish great content every week. You can build backlinks. You can research every keyword. But if your website has a hidden technical SEO issue, none of that effort will pay off.<\/p>\n\n\n\n<p>Google cannot rank what it cannot crawl. It cannot recommend what it cannot trust.<\/p>\n\n\n\n<p>The good news is that most technical SEO problems have clear, fast solutions. You do not need a massive budget. You do not need to rebuild your site. You need a good audit process, the right tools, and the discipline to fix problems before they compound.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Related_FAQ\"><\/span><strong>Related FAQ:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1778249594104\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"Q_What_is_the_biggest_technical_SEO_issue_on_websites\"><\/span><strong>Q: What is the biggest technical SEO issue on websites?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>The biggest technical SEO issue is poor crawlability that prevents Google from accessing important pages.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1778249613223\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"Q_Can_broken_internal_links_affect_rankings\"><\/span><strong>Q: Can broken internal links affect rankings?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Yes, broken internal links waste crawl budget and weaken internal link authority.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1778249638812\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"Q_Why_are_Core_Web_Vitals_important_for_SEO\"><\/span><strong>Q: Why are Core Web Vitals important for SEO?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Core Web Vitals improve user experience and directly impact Google rankings.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1778249649641\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"Q_How_do_I_check_website_crawlability\"><\/span><strong>Q: How do I check website crawlability?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>You can check website crawlability using Google Search Console and Screaming Frog.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1778249676723\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \"><span class=\"ez-toc-section\" id=\"Q_Can_JavaScript_hurt_SEO\"><\/span><strong>Q: Can JavaScript hurt SEO?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Yes, poorly rendered JavaScript can stop Google from reading your content properly.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>The most common technical SEO issue developers create includes poor website crawlability, broken internal links, core web vitals issues, JavaScript 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