Diff Checker
Compare two texts side-by-side and see the differences highlighted.
About Diff Checker
Paste two texts and instantly see a side-by-side comparison with additions, deletions, and modifications highlighted. Perfect for comparing code, config files, or any text. Supports line-by-line and word-by-word diff modes. All processing happens client-side.
Frequently Asked Questions
What is a diff?▾
A diff shows the differences between two pieces of text. Lines that were added appear in green, removed lines in red, and unchanged lines stay neutral. It's the same concept used in Git version control.
Can I compare code files?▾
Yes. The diff checker works with any plain text — code, config files, prose, CSV data, or any text format. It supports both line-by-line and word-by-word comparison modes.
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