Text compare — see every wording change
Eyeballing two drafts in separate windows misses small edits: a swapped comma, a deleted disclaimer, a soft rewrite that changes meaning. CheckDiffs is a free online text compare: paste original and revised copy, then review insertions and deletions side-by-side in your browser. Monaco, no signup, nothing uploaded for basic compare.
Open text compareWhen paste-and-diff beats scrolling
Drop the older draft, email, contract clause, or plain-text export on the left; put the updated copy on the right. Removals lean red, additions lean green. Previous / Next walks each hunk so you are not hunting through a wall of highlighted HTML. People use it for article drafts, support macros, meeting-note cleanups, localization string sets, and AI-rewritten prose from ChatGPT or Claude against the original.
Private drafts stay local
Contracts and customer emails often should not leave your machine. CheckDiffs processes basic compare client-side. Analytics may record anonymous page views; your pasted text is not part of that. Privacy · About
Free forever for basic compare
Basic side-by-side stays free. Pro ideas (export, ads-free, AI summary quota) are TBD — we will not put a fake Stripe button on the page. Until then: paste, compare, done.
FAQ
Is my text uploaded when I compare?
No. CheckDiffs runs the comparison in your browser with Monaco. Your pasted content stays on your device for basic side-by-side. Open DevTools → Network while you type if you want to verify.
Is text compare free?
Yes. Basic side-by-side is free forever, no account. Pro extras (export, ads-free polish, AI summary quota) are TBD — no fake checkout today.
How is this different from Word track changes?
Track changes lives inside a document. CheckDiffs is paste-and-compare for any plain text: two clipboard versions, one red/green diff, jump between hunks. Ideal when you only have the before and after strings.
Can I compare code as well as prose?
Yes. Switch the language selector for JavaScript, TypeScript, Python, JSON, and more — or stay on Plain Text for articles and emails. Same private engine.
Leave language on Plain Text (or switch as needed) at checkdiffs.com.