Text Diff Checker
Compare two blocks of text and highlight the differences.
About the Text Diff Checker
Compare two blocks of text and highlight the differences line by line. Free online text comparison tool.
Private by design
Everything you type here is processed inside your browser. Nothing is sent to a server, logged or stored, so it is safe to use with real numbers, drafts and anything you would not paste into a hosted tool.
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Questions people ask
How do I compare two texts?
Paste the original text on the left and the modified text on the right. The tool highlights additions, deletions, and changes between the two versions.
Can I compare code files?
Yes. The diff checker works with any text including source code. It compares line by line and highlights all differences.
Does this tool handle large texts?
Yes. The diff checker runs in your browser and can handle large text comparisons efficiently.