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Compare two texts · line and word level

Paste two versions and see exactly where they differ, side by side.

+1·-0·~2
Diff view6 rows
1{1{
2 "name": "util-platform",2 "name": "util-platform",
3 "tools": ["json", "qr", "image"],3 "tools": ["json", "qr", "image", "regex", "diff"],
4 "version": "0.1.0"4 "version": "0.2.0",
5+ "license": "MIT"
5}6}
Everything happens in your browser. Nothing is uploaded.

When to use it

To compare two versions at a glance — not just code diffs, but contracts, drafts, and translations too. Lines are aligned first; changed lines get a second pass with word-level highlights.

How it works

Paste the original (A) on the left and the new version (B) on the right. The split view below updates live. Toggle "Ignore whitespace" to skip changes that are only indentation or line breaks. Use "↔ Swap" to flip sides.

Reading the diff

  • Red — line exists only in A (removed).
  • Green — line added in B.
  • Yellow with inline highlights — line modified; red highlights mark words removed, green highlights mark words added.
  • The counter at the top (+N · -M · ~K) tracks added, removed, and modified lines.

Tips

  • Whitespace-only changes — toggle "Ignore whitespace" to filter them. Useful when comparing formatter output.
  • Long lines — wrap automatically, and word-level highlights stay aligned with the source positions.
  • Compare two JSON versions — use the "→ Diff" button in the JSON formatter to send the current output straight to the A pane.

Where does your input go?

Both texts are compared in your browser. Nothing is uploaded or saved to local storage. Close the tab and it's gone.