Accepted input

Accepts a regex pattern, optional flags, and free-form text. Snippet presets help you start with common email, URL, UUID, and IP patterns.

How to use

1. Enter a regex pattern and any flags you need.
2. Paste sample text into the editor or start from one of the built-in snippets.
3. Review highlighted matches and the captured results list.
4. Adjust the pattern until the matches reflect the rule you want.

Tips

• Toggle flags carefully when testing multiline or case-insensitive behavior.
• Use a share link when you want someone else to inspect the exact same regex state.