AI Alt Text Generator

Description

AI Alt Text Generator automatically writes clear, descriptive alt text for every image on your WordPress site — improving accessibility compliance (WCAG 2.2, ADA, Section 508, and the European Accessibility Act) and image SEO at the same time. It uses leading vision AI from OpenAI (GPT-4o-mini) and Anthropic (Claude) with your own API key, so generation is transparent and at-cost with no per-image fees or vendor lock-in.

Alt text is required for accessible, legally compliant websites, and it helps search engines understand your images. But writing it by hand across an entire media library rarely happens — so this plugin does it for you, in bulk or automatically on upload.

It produces concise, WCAG-aligned descriptions (no “image of…” filler, sensible length) and can fold in the page context and your SEO focus keyphrase for sharper, more relevant alt text. It pairs perfectly with accessibility audit tools that flag missing alt text — this is the plugin that fills the gaps.

Key Features:
– Accessibility & compliance: WCAG-aligned output to support ADA, EAA, and Section 508 requirements
– SEO keyphrase integration: automatically weaves in focus keyphrases from Yoast SEO, Rank Math, and SEOPress (without keyword stuffing)
– Page-context aware: uses the page/post the image belongs to for more relevant descriptions
– Multi-Provider Support: choose between OpenAI and Anthropic — your own API key, no lock-in
– Cost-Effective Models: uses GPT-4o-mini and Claude for optimal cost-efficiency
– Bulk Processing: generate alt text for your whole library at once, or automatically on upload
– Custom Prompts: tailor the AI prompt to your brand and needs
– Multi-Language Support: generate alt text in many languages
– Testing Feature: preview prompts before applying them to images
– WP-CLI Support: configure providers and bulk-generate from the command line
– Developer-friendly: extensible via action/filter hooks for custom integrations and add-ons

WP-CLI:
The plugin registers a wp ai-alt-text command suite, making it easy to automate alt text generation across one or many sites.

# Configure a provider and API key
wp ai-alt-text activate --provider=openai --key=sk-xxxxxxxx

# Bulk-generate alt text for all images missing it
wp ai-alt-text generate

# Regenerate alt text for specific attachments
wp ai-alt-text generate --ids=12,34,56 --force

# Preview what would be processed without calling the API
wp ai-alt-text generate --limit=20 --dry-run

# Show current configuration and coverage
wp ai-alt-text status

A typical install/activate/generate workflow:

wp plugin install ai-alt-text-generator --activate
wp ai-alt-text activate --provider=anthropic --key=sk-ant-xxxx
wp ai-alt-text generate --yes

New in Latest Version:
– Added support for Anthropic (Claude) AI provider
– Enhanced provider switching capabilities
– Individual API key management for each provider
– Improved testing functionality
– Better error handling and user feedback

Important: This plugin requires external AI services (OpenAI and/or Anthropic) for its core functionality.

AI Alt Text Generator Pro (optional upgrade)

Need automation at scale? The optional Pro add-on builds on this free plugin with:
– WooCommerce product context for commerce-aware, SEO-rich alt text
– Scheduled background scans that describe new and existing images automatically
– A coverage analytics dashboard to track your progress toward 100%
– Automatic updates and priority support

Learn more at https://store.lessbutmore.ai — the free plugin remains fully functional on its own.

External Service Usage Disclosure

This plugin uses external AI services to generate alt text. Data (images and their metadata) is sent to your selected AI provider for processing.

Supported Services:
– OpenAI: For more information, please review the OpenAI Terms of Use and Privacy Policy
– Anthropic: For more information, please review the Anthropic Terms of Service and Privacy Policy

You can choose which service to use and are only required to agree to the terms of the service you select. The plugin does not store your images or generated alt text on our servers.

Support

For support, feature requests, or bug reports, please contact us through the WordPress plugin support forum.