Builder
Tester
Capture groups
Examples
One-click starters. Pick a pattern, tweak the blocks, and copy.
Build regex without reading the docs
Drag visual blocks, see matches highlight in real time, and copy the result for your language.
Visual blocks
Pick from plain English blocks like ‘digit’, ‘word’, or ‘range’. Each one maps to a piece of regex syntax so you learn by doing.
Live testing
Paste your text, see every match highlighted instantly, and inspect capture groups without leaving the page.
Common patterns
Email, URL, phone, IP, dates, UUID, hex color, and more — ready to load into the builder and adapt.
JS · Python · PCRE
Switch dialect and copy a snippet that works in your language. Named groups and flags are translated for you.
Fully private
Everything runs in your browser. Your test data and patterns never leave the page.
Free forever
No signup, no limits, no tracking on your patterns.
Frequently asked questions
No. Each block has a plain-English name and short hint. You pick blocks, Regexly writes the syntax.
JavaScript, Python, and PCRE. Flavor-specific details like named group syntax are translated for you on copy.
No. Everything runs locally in your browser. There is no backend.
Not yet — Regexly is stateless for now. You can copy the pattern and paste it back into the builder via the import field to continue later.
Most often this is a flag or flavor mismatch. Make sure the dialect selector matches the language you are copying into, and double-check flags like case-insensitive or multiline.