Every developer has been there: you need a regex for email validation, you open Google, fall into a StackOverflow rabbit hole, and 30 minutes later you're still not sure if the pattern is reliable. Regexlib solves this. It's a curated, searchable library of tested regex patterns for the most common developer needs: email, URL, phone, dates, passwords, IDs, and more. Built for developers who want to ship fast. No sign-up. No ads. Free forever.
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Maker
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Hey ! 👋
I built Regex Library because I was tired of Googling the same regex
patterns over and over and never being sure they were production-ready.
So I curated 117 patterns, tested each one, added valid/invalid examples,
and wrapped it in the simplest UI I could build, search, preview, copy.
A few things I'm proud of:
- Ctrl+K to search from anywhere
- /top page showing what patterns developers copy the most this week
- Works great on mobile (yes, devs copy code on phones)
- Every pattern has tested valid/invalid examples
Would love your feedback, especially on patterns you wish were in there.
What regex do you Google most often? 👇
Thanks for checking it out!