Regex Lab — Free & Private

Test and explain regular expressions, and extract matches and structured data from text.

Runs 100% in your browser: your files and data never leave your device. No signup, no ads.

Tools in Regex Lab

• Regex Playground & Explainer: Live regular expression tester with capture groups, matches, and pattern presets.
• Regex Match & Data Extractor: Extract emails, URLs, IPv4 addresses, phone numbers, UUIDs, or custom regex matches with deduplication and CSV export.

More Developer Tools tools

• HTTP & API Toolkit
• Project & Config Toolkit
• UUID & ID Generators

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