Regex Tester
Online regex testing tool supporting real-time matching, highlighting, group extraction, and replacement testing. Supports PCRE/JavaScript syntax.
Instructions
How to Use\n1. Enter a regular expression\n2. Choose match flags (g/i/m/s)\n3. Paste content in the test area\n4. View matches and highlights in real time\n5. Test replacement in the replace area
FAQ
Which regex syntax is supported?
Both PCRE (PHP) and JavaScript regex modes are supported and freely switchable.
Which flags are supported?
g (global), i (case-insensitive), m (multiline), s (dotAll) and other common flags.
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