Diff Checker
Spot additions and deletions between two text versions instantly.
Line diff
line one
-line two
+line 2
line three
+line four
What is this tool?
A diff shows how one text changed into another. This tool compares line-by-line using a longest-common-subsequence approach and highlights removed lines in red and added lines in teal — useful for configs, copy edits, and code snippets.
How to use it
- Paste the original text on the left and the changed text on the right.
- Scan the diff view: “-” removals, “+” additions, unchanged lines plain.
- Edit either side to update the diff live.
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