Regex Tester
Test regular expressions with real-time matching and highlighting.
Frequently Asked Questions
How does regex testing work?
Enter a regular expression pattern and a test string. The tool will show all matches in real-time and highlight them in the test string.
What regex flags are supported?
The tool supports global (g), case-insensitive (i), and multiline (m) flags. These modify how the regex pattern matches the test string.
Can I test complex regex patterns?
Yes, the tool supports all JavaScript regex features including groups, lookaheads, quantifiers, and character classes. Invalid patterns will show an error message.