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Text Diff Checker

Compare two blocks of text line by line and highlight additions, removals, and unchanged lines.

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Private by designRuns locally in this browser
Original text0 chars · 1 lines
Drop a local text/data file here. Nothing is uploaded.
Changed text0 chars · 1 lines
Drop a local text/data file here. Nothing is uploaded.
OutputWaiting for input
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Your result appears hereNothing is uploaded. Processing happens on this device.
Shortcut Ctrl/⌘ + Enter
Why this tool exists

Get the answer without turning it into a project.

Useful for config changes, JSON snapshots, generated output, SQL, logs, or any quick before-and-after comparison.

Common questions

Is this a Git diff implementation?

It is a lightweight line-based comparison designed for quick checks, not a replacement for Git's full diff engine.

Does the text leave my browser?

No. Comparison is performed locally.