Text Compare (Diff)
Free online text compare tool: line-level diff highlights added and removed lines with counts — computed locally.
Privacy: all processing happens locally in your browser. Your input never leaves your device.
What is Text Compare (Diff)?
Comparing two versions of copy, configs or logs line by line by eye is painfully inefficient. This tool performs a line-level diff: added lines are highlighted green, removed lines red, unchanged lines gray, with add/delete counts summarized. For structural JSON comparison that ignores key order, use the JSON Compare tool instead.
How to Use
- Paste the two texts into the left and right panes
- Differences are highlighted automatically
- Review the add/delete statistics
FAQ
- Is the granularity line- or character-level?
- Line-level. For JSON semantic comparison that ignores key order, use the JSON Compare tool.
- Can it compare large files?
- Texts of a few hundred KB compare smoothly; all computation happens locally in your browser.
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Last updated 2026-09-04