Developer
Regex Tester
Test matches, capture groups and replacements in an isolated worker with a time limit.
Processed on your device
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How to use Regex Tester
- 1Enter your source or choose a local file when supported.
- 2Adjust the controls and run the tool.
- 3Review the result, then copy it or download the generated file.
Before you start
What does this tool do?
Test matches, capture groups and replacements in an isolated worker with a time limit.
Is the input uploaded?
Source text and files are processed in this browser. Code, token values and file contents are excluded from MakePip tool statistics.
What should I review?
Patterns use JavaScript regular-expression syntax. Long-running patterns are stopped after one second.