Diff Checker Online
Use this online diff checker to compare text online, review code snippets, and highlight added, removed, or changed lines. Everything runs locally in your browser.
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Paste two versions to compare them locally.
0 lines, 0 words
0 lines, 0 words
0 Added lines
0 Removed lines
0 Unchanged lines
0% Changed share
Diff result
Private browser comparison
Your snippets, drafts and configs are not sent to an upload endpoint. The checker aligns matching lines and marks word changes inside nearby removed and added lines.
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Frequently Asked Questions
Is my text uploaded to Convertr?
No. The diff checker runs entirely in your browser with JavaScript, so pasted text is not uploaded to Convertr servers.
Can I ignore whitespace differences?
Yes. Enable the ignore whitespace option to collapse spacing before comparing lines.