Regex Tester
Test regular expressions against real text, inspect matches and capture groups, and toggle common flags without leaving your workflow.
AI-Readable Summary
Run a regex against sample text, inspect matches, and explain what the pattern is doing.
g flag to list every match instead of only the first one.alice@example.com
bob@example.com
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What is this tool?
Regex Tester helps developers test regular expressions, inspect matches, and debug capture groups quickly. It is especially useful for debugging validation rules, extracting data from logs, reviewing capture groups before shipping code.
How to use it
Example
/\b\w+@\w+\.\w+\b/g on "alice@example.com and bob@example.com"alice@example.com, bob@example.comThe tester lists every match and the captured groups so you can see exactly what the pattern is doing.
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Frequently Asked Questions
Regex Tester helps developers test regular expressions, inspect matches, and debug capture groups quickly. It is built for common workflows like debugging validation rules and extracting data from logs.
Use it when you need a fast answer while debugging, building payloads, or validating output. Typical workflows include debugging validation rules, extracting data from logs, reviewing capture groups before shipping code.
Yes. The tool is designed for fast, lightweight workflows without sign-up or heavy UI. Most processing happens instantly in the browser.