Tool • Dev
Regex Tester
Live matches, captures, replacements — explanations, **presets**, and **permalinks** for sharing/debugging.
Notes
JavaScript RegExp engine/flags. If supported, the d flag shows capture ranges.
Everything runs locally.
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Tester
Pattern/flags on the left; live explanation, highlights, matches, and replacements below. Sidebar explains tokens.
Ready
Permalink updates on Run / Apply (and on edits if Auto
update is on).
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• Group
• Class
• Quantifier
• Escape
• Assertion
• Anchor
• Alt |
• Dot
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| # | Match | Index | Length | Groups |
|---|---|---|---|---|
| No matches yet | ||||
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