.* Regex Tester

Free online tool for testing and debugging regular expressions with live matching — no signup required.

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Instant Processing

All processing happens in your browser. No server needed.

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100% Private

Your data never leaves your browser. We don't store anything.

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Free Forever

No signup, no limits. Use as much as you need.

What is Regex Tester?

Regex Tester is a free online tool for testing and debugging regular expressions with live matching. Whether you are a developer, student, or professional — this tool makes regular expression testing simple and fast.

How to Use

  1. Enter or paste your data into the input field
  2. Click Process to see the result
  3. Copy the output or use it directly

Features

  • 100% client-side processing — no data sent to servers
  • Works on all devices: mobile, tablet, desktop
  • No registration or signup required
  • Fast and lightweight
  • Free to use without limits