Developer Tools

Regex Tester & Cheat Sheet

Test regular expressions in real-time with instant match highlighting, capture group breakdown, and standard regex cheat sheet.

REGULAR EXPRESSION
Flags:
TEST STRING
2 matches found

Recommended developer stack

DigitalOcean Cloud $200 free credit

Reliable SSD droplets, managed databases, and Kubernetes clusters deployed in seconds.

Claim $200 free credit
Supabase Postgres Free tier

The open source Firebase alternative. Dedicated Postgres DB, instant Auth, and REST/GraphQL APIs.

Start free project
NordVPN Security 74% off deal

Protect your developer workstations, APIs, and DNS queries with fast, encrypted tunnels.

Get 74% off deal

Affiliate Disclosure: We may earn a commission from partner signups at zero cost to you, which funds our free tools and ad-free hosting.

Frequently Asked Questions

What regex flags are supported?

Supports global (g), case-insensitive (i), multiline (m), and single-line (s) flags.

Does this tool validate syntax?

Yes, it catches regex syntax errors in real time as you type.

Is matching done in the browser?

Yes, expressions evaluate instantly in your local JavaScript engine.

Embed this Tool on Your Site

Copy and paste this snippet into your blog, documentation, or tech site to embed this interactive utility: