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Test Regular Expressions

Test and debug JavaScript regular expressions in real-time. distinct highlighting for matches and groups. Fast, free, and 100% private browser tool.

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About Test Regular Expressions

1

Pattern

Enter regex.

2

Text

Enter test string.

3

Review Results

Verify the output looks correct before using or downloading it.

4

Save Your Output

Click the download or copy button to export your results to your device or clipboard.

Write and test RegEx patterns against text variants.

  • Live Matching: See matches highlight as you type.
  • Group Capture: View content of capturing groups (parantheses).

Key Features

JS Engine

Uses your browser's native RegEx engine.

Flags

Toggle Global (g), Case Insecret (i), Multiline (m).

Frequently Asked Questions

This tool uses the JavaScript Regular Expression engine supported by your browser.

Yes, if your modern browser supports them (most Chrome/Firefox versions do).

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