URL Validator
Validate URL format
Frequently Asked Questions
How does the URL Validator check URLs?
The validator checks URL syntax against RFC 3986: valid scheme (http/https), proper domain format, valid port number, correct path encoding, and well-formed query parameters. It catches common errors like missing protocols and invalid characters.
What makes a URL valid?
A valid URL needs: a scheme (https://), a host (example.com), and optionally a port (:8080), path (/page), query (?key=value), and fragment (#section). The validator checks each component against the specification.
Can I validate multiple URLs at once?
Yes. Paste multiple URLs (one per line) and the validator checks each one. Results show valid/invalid status with specific error descriptions. You can export the list of valid URLs for further processing.
Does the validator check if the URL is reachable?
The basic validator checks syntax only. It does not make HTTP requests to verify the URL is live. This is intentional — syntax validation is fast and does not require network access. Use a link checker for reachability testing.
What are common URL format errors?
Missing protocol (example.com instead of https://example.com), spaces in URLs, unencoded special characters, double slashes in paths, invalid port numbers (above 65535), and malformed query strings (missing = in key-value pairs).