Text Difference Checker
Paste two versions of text and see a line-by-line diff of what was added, removed or unchanged — computed locally.
Runs locally in your browser
+2 added-1 removed
line one
-line two
+line 2
line three
+line four
What is the Text Difference Checker?
This checker compares two blocks of text and highlights added, removed and unchanged lines using a longest-common-subsequence diff.
How to use it
- 1Paste the original text on the left.
- 2Paste the changed text on the right.
- 3Read the highlighted diff.
How it works
The two inputs are split into lines and compared with a longest-common-subsequence algorithm, which produces the minimal set of insertions and deletions.
Limitations & notes
- The optional word mode compares tokens; it does not show character-level edits inside a word.
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