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Text Diff / Compare

Compare two blocks of text and see what changed, line by line.

Before
After
Output

The comparison appears here.

More in this kitAll of Text Utilities

About Text Diff / Compare

Text Diff compares two versions of a text and highlights what changed, line by line. It is useful for checking edits to a contract or article, comparing two config files, or spotting what was altered between drafts.

How to use it

  1. Paste the original text into the Before panel.
  2. Paste the changed text into the After panel.
  3. Review the comparison, which marks each line as added, removed or unchanged, and shows how many lines were added and removed.

Good to know

  • The comparison works line by line. A small edit inside a line shows as the old line removed and the new line added.
  • Differences in whitespace count as changes. Run both versions through the Whitespace Cleaner first if you only care about wording.
  • Your text is processed in your browser and is never sent to a server.

Common questions

Can I compare two files?

Open each file, copy its contents, and paste them into the Before and After panels.

Why does a whole paragraph show as changed?

If a paragraph is written as one long line, any edit within it changes the whole line. Breaking text into shorter lines gives a more precise comparison.