Diff Checker
Compare two texts and highlight the differences. Find changes, additions, and deletions between text versions.
Original Text
Modified Text
How to use Diff Checker
- 1
Paste both texts
Put your original version in the left box and the modified version in the right box.
- 2
Choose diff mode
Toggle between Line by Line and Word by Word to control how granular the comparison is.
- 3
Run the comparison
Click Compare to highlight every addition, deletion, and change between the two texts.
- 4
Review the changes
Read the color-coded results and the statistics panel showing how much was added, removed, or changed.
Frequently asked questions
What is the difference between line-by-line and word-by-word mode?
Line-by-line compares whole lines and flags any line that differs, while word-by-word pinpoints the exact words that changed inside otherwise similar sentences for a finer comparison.
How are additions and deletions shown?
The tool color-codes the results so added content and removed content stand out, and a statistics panel summarizes the count of additions, removals, and changes.
Can I compare code, lists, or formatted text?
Yes, it compares any plain text including source code, CSV rows, and lists; it matches characters literally, so indentation and spacing differences are also detected.
Is there a size limit on the texts I can compare?
There is no fixed limit and you can paste long documents, though very large inputs may take a moment to render the full highlighted diff.
Is my text kept private?
Yes, the comparison runs entirely in your browser, so neither version of your text is uploaded to a server, and the tool is free with no registration.
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