Developer tool

Text Diff Checker

Compare two small blocks of text line by line and see additions and removals.

Free browser tool

No Matrix computer needed

✓ No account or card

✓ Use the result right away

✓ Task-specific limits below

Workspace

Use text diff checker

Runs in this browser tab

Your input43 / 100,000

Result

Your result will appear here. The input stays in this browser tab.

How to use it

Separate the old and new text with a line containing three hyphens to produce a line diff.

Try this example

first line
old line
---
first line
new line

What to check

This is a line comparison, not a semantic review or merge-conflict resolver.

Review the result before using it in a published page, application, or agent configuration.

Quick answers

Frequently asked questions

How do I separate the two versions in Text Diff?

Put three hyphens on their own line between the old and new blocks. The result marks added and removed lines.

Does Text Diff understand meaning or code moves?

No. It compares lines rather than intent, so moved lines may appear as a removal and addition. Review the source when accuracy matters.

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