What it does
Diffchecker highlights additions, removals and edits between two pasted texts or uploaded files.
Put the original on the left and the revision on the right, then compare and inspect the synchronized highlights. Word-level differences are included in Basic; its pricing table gives character precision and merging 10 tries each per month. Unified view, live editing, ignore/whitespace controls and PDF export each have five monthly tries. These are feature limits, rather than an overall comparison quota. Basic comparison needs no account; saving and sharing require one. Paid Desktop runs offline on Windows, Mac and Linux. Keep that desktop scope separate from web sharing and AI summaries.
Strengths
- Side-by-side comparison with synchronized scrolling
- Character or word level highlighting
Watch out for
- Saving and sharing require an account
Best for
- Checking revisions before publication
- Finding changed values in text exports
Sources
- Compare text and find differences online or offline - Diffchecker (Oct 26, 2026)
- Diffchecker Pricing - Plans & Features (Oct 26, 2026)
- Diffchecker feature comparison quotas (Oct 26, 2026)