Text Diff Checker
Compare two blocks of text or code side-by-side and see exactly what changed.
How it works
Compare two blocks of text and see exactly what was added, removed, or unchanged — by word, by line, or character-by-character — with additions and deletions color-coded inline.
- Paste the original text on the left and the changed version on the right.
- Choose a comparison granularity: words, lines, or characters.
- Review the diff result, where green highlights additions and red/strikethrough marks removals.
- Check the added/removed counters for a quick summary of how much changed.
Common use cases
- Reviewing edits to a document, contract, or blog post between two drafts.
- Spotting exactly what changed in a config file, log snippet, or API response between two versions.
- Comparing a rewritten version of text against the original to see what was actually altered.
- Line-by-line diffing of code snippets that aren't in version control.
FAQ
- Which comparison mode should I use?
- 'Words' is best for prose and general text — the most readable for sentence-level edits. 'Lines' suits structured content like config files. 'Characters' is most precise but noisiest, useful for spotting small typo-level changes.
- Does this diff files directly?
- No — paste the contents of each file into the two fields to compare them.