JSON formatter & validator
Validate JSON and format or minify it with configurable indentation.
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Developer tools
Regular expression tester
Find JavaScript regular-expression matches with a bounded execution time.
Free to useProcessed on your device
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About this tool
Find JavaScript regular-expression matches with a bounded execution time.
How to use
- Enter pattern and test text in the form.
- Choose the available options, then run regular expression tester.
- Review the result and copy or download it for your work.
JavaScript regex syntax. Results are capped at 1,000 matches. Pathological expressions are stopped in a dedicated worker.
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