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Text & Code Diff Checker
Compare two text or code snippets side-by-side to highlight differences and changes.
0 Removed
0 Added
0 Unchanged
Comparison Result
About the Text Diff Checker
A diff checker compares two versions of text or code and highlights exactly what changed — what was added, removed, or modified. It's invaluable for code reviews, spotting content edits, and comparing configuration files.
Paste both versions and the differences are highlighted instantly, all within your browser.
How to use the Text Diff Checker
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1
Paste the original
Put the first version of your text or code on the left.
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2
Paste the changed version
Put the second version on the right.
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3
Review the differences
Additions and deletions are colour-coded line by line so changes are easy to spot.
Frequently asked questions
What can I compare?
Any plain text or code — source files, configuration, articles, JSON, logs, and more.
Is my content private?
Yes. The comparison runs entirely in your browser and nothing is uploaded.
Does it work for large files?
It handles typical files and snippets well. Very large files are compared in-browser, so performance depends on your device.