Compare two text documents, code files, or API responses to instantly spot differences.
What we do
Easily toggle between algorithms. Use Line-by-Line mode for standard code files, or switch to Word-Level mode to catch tiny, single-character typos in dense paragraphs or minified code.
Hunting down a mysterious syntax error? Our engine explicitly hunts down hidden Zero-Width Spaces (ZWSP), Non-Joiners, and Byte Order Marks, flagging them with a bright red badge.
Stop scrolling through thousands of lines of identical code. Use our intuitive Next and Previous arrows to instantly jump your screen directly to the exact lines that were added or modified.
Copying code from different editors? Toggle our "Ignore Whitespace" feature to prevent the engine from flagging tab-vs-space indentation differences, while perfectly preserving your visual layout.
Built for massive payloads. Powered by an enterprise Web Worker and a 12-second Timeout Guard, you can confidently compare up to 500,000 characters without freezing your browser tab.
Comparing proprietary source code, API keys, or confidential legal documents? Your data is strictly secure. The entire comparison matrix is calculated locally on your own machine.