Test · Developer

Regex Tester

Write a pattern, set flags, and see matches and groups update live.

Matches

2

Flags

gi

Matches

  • [8] ada@example.com

    Groups: $1=ada · $2=example.com

  • [36] bob@toolsweb.dev

    Groups: $1=bob · $2=toolsweb.dev

How to use

  1. Enter a regular expression and flags.
  2. Paste sample text.
  3. Review matches and capture groups.

Features

  • Live match list
  • Common flags (g i m s u y)
  • Runs in your browser. Inputs are not uploaded to ToolsWeb servers.

Privacy & how it works

This developer utility runs in your browser with JavaScript and Web APIs. Your text, tokens, and secrets are not uploaded to ToolsWeb servers for this tool. Privacy Policy.

FAQ

Which regex engine is this?expand_more

JavaScript’s built-in RegExp engine in your browser.

Is this tool free?expand_more

Yes. No signup and no paywall for core use.

Is my text uploaded?expand_more

No for this tool. Text stays in your browser while you work.

Do I need an account?expand_more

No. Open the page and start typing or pasting.

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