Regex Tester
Test regular expressions live with highlighted matches and groups. Test regular expressions online with live match highlighting, capture-group tables and common flags. Includes a cheat sheet. Free regex playground.
Tentang Regex Tester
Regular expressions are powerful and notoriously fiddly — a single missing escape changes everything. This tester shows matches highlighted inside your sample text as you type, lists every capture group with what it matched, supports the i, g, m and s flags, and reports pattern errors with their positions instead of failing silently. A built-in cheat sheet keeps the meaning of ?, +, * and friends one glance away.
Cara memakai Regex Tester
- Enter your regular expression without surrounding slashes.
- Toggle the flags you need.
- Paste sample text — matches highlight instantly.
- Study the group table to refine your pattern.
Fitur utama
- Live highlighted matches as you edit the pattern
- Capture group table with matched text
- Case-insensitive, global, multiline and dotall flags
- Inline cheat sheet of common tokens
Which regex flavour does this tester use?
Why does my pattern match nothing in "global" mode?
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