DEV / 15 · Developer tools
Regex tester
Match counts, capture groups and the matched text, as you type the pattern.
This is Rust's regex syntax. It has no backreferences and no lookaround, so a pattern that relies on them is rejected here rather than quietly matching the wrong thing.
Paste or type something on the left and the result appears here.
Long inputs are capped: the first 20000 characters are searched, and the first 200 matches are listed.Runs in this tab. Nothing you paste is uploaded.
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