Text & Code
Regex Tester
Test JavaScript regular expressions with matches, ranges, and capture groups.
Runs locally in your browserLoading the local workbench…
About this tool
Run JavaScript RegExp patterns in a disposable browser worker with bounded input and execution time. PCRE, Python, and .NET syntax can differ.
Common uses
- Inspect global and named capture groups
- Test multiline JavaScript patterns
- Stop pathological expressions after a bounded timeout