Free tool · nothing is uploaded
Diff Checker
Paste two versions of a text or code and see exactly what changed.
Updating your website copy?
Get changes made quickly and safely.
From text edits to new pages, my care plans cover regular website updates, plus backups, security and speed checks.
Ways to use a diff checker
- Contracts and documents: spot every word someone changed before you sign.
- Code: compare two versions of a file, a config or a snippet.
- Website copy: check what changed on a page between two drafts.
- Lists and data: find which rows were added or removed.
Frequently asked questions
What is a diff checker?
A tool that compares two versions of a text and shows exactly what changed: lines removed in red, lines added in green, and the changed words inside each line.
Is my text uploaded?
No. The comparison runs entirely in your browser, so it is safe for contracts, code and private documents.
Can I ignore spaces or capital letters?
Yes. "Ignore whitespace" treats lines that only differ in spacing or indentation as the same, and "Ignore case" ignores upper and lower case differences.
How large can the texts be?
Thousands of lines work well. Very long texts that are almost completely different may be too large to compare in the browser.
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