Terms of use.

By using regexguide.com you agree to these terms. They're short and written in plain language.

What the site is

regexguide.com is a free educational tool. It parses regular expressions, explains them in plain English, lets you test them against strings, and provides a curated library of common patterns. Everything runs in your browser.

What the site isn't

The site is not a substitute for testing your own code. Regex correctness depends on the exact language, library version, and runtime you use. Our explanations and patterns target the JavaScript regex flavor unless otherwise noted. Always verify a pattern in your actual environment before relying on it in production.

No warranty

The patterns and explanations on regexguide.com are provided "as is," without warranty of any kind. We do our best to test them, but we can't guarantee correctness for every possible input. Use at your own risk.

Acceptable use

You may use regexguide.com for any lawful purpose. You may not scrape the site at a rate that materially impacts service for other visitors, attempt to gain unauthorized access to any infrastructure, or use the site to host or distribute illegal content.

Content ownership

The text, code, design, and curated patterns on this site are © 2026 regexguide.com. You may freely use any regex pattern published here in your own code — patterns themselves are facts, not copyrighted expression. You may not republish the explanations or guides without permission.

Third-party services

The site uses Google Analytics, Google AdSense, and Adsterra. By using the site you accept their terms as well — see our privacy policy for details on what each one does and how to opt out.

Changes

These terms may change. Material changes will be announced on the homepage for at least 30 days before they take effect.

Contact

Questions about these terms: contactus@regexguide.com.

Last updated: May 2026