Text Diff

Compare two texts line-by-line. See additions, removals, and unchanged lines.

Original

Modified

Ignore whitespace

Enter text in both boxes to see the diff

About this tool

Compare two pieces of text side by side and highlight every addition, deletion, and change. Paste your original text and the modified version, and the tool instantly shows what changed - line by line or character by character. Useful for reviewing document edits, comparing code versions, checking configuration changes, and proofreading.

How to Compare Two Texts Online

1Paste the original text into the left panel.
2Paste the modified text into the right panel.
3Differences are highlighted instantly - green for additions, red for deletions.
4Toggle 'Ignore whitespace' or 'Line mode' as needed.
5Copy the diff output or take a screenshot for documentation.

Frequently Asked Questions

What is a text diff?+

A text diff shows the differences between two versions of a document. Additions are typically highlighted in green, deletions in red. The term comes from the Unix diff command.

Can I compare code files?+

Yes. The tool works on any plain text including source code, configuration files, JSON, CSV, and Markdown. Paste each version into the left and right panels.

Does the comparison ignore whitespace?+

By default whitespace differences are shown. Toggle the 'Ignore whitespace' option to focus on meaningful content changes only.

Is there a limit on how much text I can compare?+

No enforced limit. Very large documents (100,000+ characters) may take a second to process, but most real-world documents compare instantly.

Looking for a deeper guide on this topic? Browse the Searchlight blog.

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