Diff Checker
Compare two texts and highlight differences side by side
Diff Checker — Compare Two Texts Online
Paste two pieces of text to instantly see what changed — added lines, removed lines, and modifications are highlighted side by side. Useful for comparing code versions, documents, and config files.
FAQ
What is a diff?
A diff (from 'difference') is a comparison between two versions of text that shows exactly what was added, removed, or changed.
How is diff different from text compare?
They're the same thing. 'Diff' is the technical term (from the Unix diff command) while 'text compare' is the plain-English description.
Can I compare code files?
Yes — paste any code, config, JSON, or plain text. The tool highlights differences at the line level.
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