Text Diff Checker
100% PrivateDeveloper ToolsCompare two texts line by line and see exactly what was added and removed.
Runs entirely in your browser. Your input is not uploaded to Ovatly or anywhere else.
Paste both texts to see the differences highlighted here.
- 1Paste the original text on the left.
- 2Paste the changed text on the right.
- 3Choose Lines for code and structured text, or Words for sentences and paragraphs.
- 4Read the highlighted result and the added / removed / unchanged counts.
Comparing: Original: a, b, c on three lines Changed: a, x, c on three lines The checker reports 1 added, 1 removed and 2 unchanged lines, highlighting b as removed and x as added. In word mode, "the quick fox" versus "the slow fox" is 1 word added and 1 removed.
- Line mode treats a changed line as a removal plus an addition, the same model Git uses, which is why counts are shown for both.
- The comparison runs entirely in your browser, so drafts, contracts and code are never uploaded.
- Very large pasted texts (whole books or log files) will still work but can take a moment to compare.
Lines for code, configs and lists, where the line is the natural unit. Words for prose, where a one-word edit inside a long sentence should not mark the whole sentence as replaced.
About this tool
The Text Diff Checker compares two versions of a text and highlights exactly what was added and removed, by line for documents and code, or by word for prose. It answers the everyday question "what actually changed between these two drafts?" without uploading either version anywhere.
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Part of Ovatly's free tools in Developer Tools.