Developer Tools
Regex Tester
About Regex Tester
Paste a pattern and test string to see matches instantly. Supports global, multiline, and case-insensitive flags.
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Frequently asked questions
- Is my data sent to a server?
- No. This tool runs entirely in your browser. Your data never leaves your browser.
- What regex flags are supported?
- JavaScript flags: g, i, m, s, u, and y — toggle them in the toolbar.
- Can I test multiline text?
- Yes. Enable the m flag for multiline anchors and paste multi-line sample text.
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