BuildUtilities

Text Diff Checker – Free Online Tool

Compare two text blocks side-by-side and highlight differences line by line.

✦ FreeNo SignupInstantTextRegular Expressions GuidePrompt Engineering Guide
1
The quick brown foxThe quick brown cat
2
jumps over the lazy dog.jumps over the lazy dog.
3
Hello world.Hello there.

Example

Input

Hello World
Foo Bar

Output

- Hello World
+ Hello Earth
  Foo Bar

The word 'World' was changed to 'Earth', shown as a deletion and addition.

How to Use Text Diff Checker

  1. 1

    Enter Text A

    Paste the original text in the left pane.

  2. 2

    Enter Text B

    Paste the modified text in the right pane.

  3. 3

    Review Diff

    Changed lines are highlighted with color-coded indicators.

What is Text Diff Checker?

The Text Diff Checker compares two blocks of text and produces a clear, color-coded diff output. It identifies additions, deletions, and modifications at the line level, making it easy to spot changes between versions of code, configs, or documents.

Common Use Cases

  • ✦Reviewing code changes before committing
  • ✦Comparing document versions for edits
  • ✦Debugging configuration file differences

Frequently Asked Questions

More Text Tools

Text processing, counting, comparison, and transformation.

/.*/ Regex Tester¶ Lorem Ipsum GeneratorW# Word CounterAa Text Case Converter/-/ Slug Generator⟲T Text Reverser
View all Text tools
Tip Jar