Text Tools
Diff checker
Compare two versions of any text and see every change highlighted. Works with documents, code, and plain text. Runs locally in your browser — nothing is uploaded.
100% secure and local.Your text is compared in your browser and is not uploaded.
Frequently asked questions
- What is a diff checker?
- A diff checker compares two versions of a text and highlights every difference. Additions are shown in green and deletions in red, so you can see exactly what changed between versions.
- Is this diff checker free?
- Yes, completely free with no limits on text length, no account required, and no watermarks. All comparison runs in your browser.
- Can I use this for code comparison?
- Yes. The diff checker works with any text including code. For a code-focused experience with monospace formatting, try our Code Diff Tool.