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Text Comparator

Compare two texts side by side

About Text Comparator

Text Comparator compares two texts line by line, highlighting which lines match exactly and which don't, entirely in your browser. Note: comparison is a whole-line exact match, not a character-level or word-level diff — a line with even one different character is simply marked as different, without showing exactly what changed within it.

How to use Text Comparator

  1. 1Paste your first text into the "Text 1" box.
  2. 2Paste your second text into the "Text 2" box.
  3. 3Click "Compare" to check both texts line by line.
  4. 4Review the results — matching lines and differing lines are shown side by side, with a count of differences found.

Frequently Asked Questions

Is Text Comparator free to use?

Yes, it's completely free with no signup required.

Does it highlight exactly which words or characters changed within a line?

No — comparison works at the whole-line level. A line is marked as either identical or different; it doesn't pinpoint the specific word or character that changed.

Can I compare long documents?

Yes, though very large texts are limited only by your browser's performance since everything runs locally.

Is my data private?

Yes, comparison happens entirely in your browser — neither text is uploaded to a server.

Tips & Tricks

  • ✓Since comparison is line-by-line, make sure both texts use consistent line breaks for a meaningful comparison.
  • ✓For code or documents where you need to see exactly which words changed within a line, use a dedicated word-level diff tool instead.
  • ✓A shifted line (e.g., one extra blank line inserted early in one text) will cause every line after it to show as different — check for that if you see unexpectedly many differences.
  • ✓Manually copy the results if you need them elsewhere, since there's no built-in copy or export button for the comparison output.