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Test JavaScript regular expressions online for free against pasted text. Inspect each match and its positions using the browser's global, multiline and Unicode behavior.
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Test JavaScript regular expressions online for free against pasted text. Inspect each match and its positions using the browser's global, multiline and Unicode behavior.
Use this tool for free without a KitNelo account. Processing runs in your browser; input limits, browser support and device memory still apply.
Uses global, multiline and Unicode flags. Syntax and behavior can differ from PCRE or other language engines.
Read KitNelo data and privacy detailsEnter a regex pattern and sample text, then run the browser engine to inspect matching results. Validate the pattern with representative input because JavaScript syntax can differ from PCRE and other regular expression engines.
Test your pattern against the source text and inspect the start and end positions of returned matches. Use the positions to locate captured text, checking repeated occurrences under the tool's global matching behavior.
Paste a test case and expression to explore matching behavior before using it in JavaScript. Review the output with global, multiline and Unicode flags in mind, particularly for line anchors and non-ASCII text.
