/
/
g
i
m
s
u
TEST STRING
OUTPUT
Enter a pattern and test string to see matches
Common use cases
- Test patterns before adding to code
- Debug failing regex matches
- Build complex extraction patterns
- Learn regex by experimenting
Frequently asked questions
Which regex flavor does this use?
JavaScript (ECMAScript) regex. This is the same engine your browser uses, so patterns work identically in JS code.
What flags are supported?
g (global), i (case-insensitive), m (multiline), s (dotAll), u (unicode), y (sticky).