About this tool
The Text Diff tool compares two blocks of text and highlights what was added, removed, or changed. It works for prose, code, configuration files, and contract drafts. Nothing is uploaded; diffs are computed entirely in your browser.
Text Diff
Compare two texts side by side and see the differences highlighted.
Enter text on both sides and click Compare.
How to use
- Paste the original text on the left side.
- Paste the revised text on the right side.
- Choose line diff or character diff depending on how granular you need to be.
- Toggle "ignore whitespace" if trailing spaces or blank lines are noise.
- Review the inline or side-by-side output and copy the changes.
Common use cases
- Spotting subtle changes between two contract versions.
- Comparing two log files to see what a deploy changed.
- Reviewing an edit suggestion on an article draft.
- Checking that two translation strings stay in sync.
- Finding drift between two configuration files.
Frequently asked questions
Does the diff tool see my text?
Only your browser does. No text leaves the page — the comparison is computed locally.
Does it handle long documents?
Yes, up to several megabytes. Very long files may be slow because browsers pause during heavy string work.
Can I ignore case?
Yes. Toggle "case-insensitive" to skip differences that only come from capitalization.
Which diff algorithm is used?
A Myers-style diff that matches the output developers know from tools like git diff.