Compare Text — Find Differences Online

Compare two texts and instantly see what changed. Free, private, in-browser diff checker. No signup, no upload.

Paste two versions of anything and see exactly what changed. Compare Text highlights every addition in green and every deletion in red, side by side, the moment you type. It's built for the small, annoying jobs: checking what an editor changed in your draft, diffing two config files, comparing a contract before and after redlines, or finding the one character that differs between two API keys. Why people keep it pinned: • Instant, character-level diff as you type. No "compare" button to hit. • Right-click any selected text on a page to send it into a comparison. • Ignore case and ignore whitespace when you only care about real changes. • Upload or paste files, copy or download either side, swap sides with one click. Your text never leaves your browser. No account, no upload to a server, no tracking. The comparison runs entirely on your machine. Need more room? Click Full view to open the full editor at comparetext.org. Free, fast, and private.