URL Regex
A tested regex for http and https URLs, with test cases and code for JavaScript, Python, C# and Java. Free and private: runs in your browser.
Paste URLs (one per line) to see which match.
Runs entirely in your browser. Nothing you paste is uploaded or stored.
Use cases
- Find a syntax error before the build or deploy fails.
- Check config files in code review.
- Learn the rules your linter enforces.
Frequently asked questions
Is regex enough to validate URLs from users?
Use it as a first filter, then parse with new URL() (or your language's URL class) and check the protocol to block javascript: links.
Is the URL Regex free?
Yes. It is free with no sign-up, and it runs entirely in your browser, so your input is never uploaded or stored.
What should I do with the issues it reports?
Fix high-severity items first; they usually break builds or deployments. Lower-severity items are style and best-practice suggestions.
Related tools
Checking one snippet is a start. Scan your whole repository for free with CodeInspector.