Regex for Web URL (HTTP/HTTPS)

Robust URL validation regex capturing protocols, optional www subdomains, hostnames, query query parameters, and URL path anchors.

/i

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Validation Result: MATCH ✓

Pattern Breakdown & Tokens

  • • ^https?:\/\/ — required HTTP or HTTPS protocol scheme
  • • (?:www\.)? — optional www subdomain prefix
  • • [-a-zA-Z0-9...]+\.[a-z]{1,6} — hostname and valid domain extension
  • • (?:[-a-zA-Z0-9...&\/=]*) — optional URI resource path, query parameters, and fragments

Code Snippets

JavaScript 
const urlRegex = /^https?:\/\/(?:www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b(?:[-a-zA-Z0-9()@:%_\+.~#?&\/=]*)$/i;
const isValid = urlRegex.test(url);
Python 
import re
pattern = r"^https?:\/\/(?:www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b(?:[-a-zA-Z0-9()@:%_\+.~#?&\/=]*)$"
is_valid = bool(re.match(pattern, url, re.IGNORECASE))
Go (Golang) 
matched, err := regexp.MatchString(`^https?:\/\/(?:www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b(?:[-a-zA-Z0-9()@:%_\+.~#?&\/=]*)$`, url)
PHP 
$isValid = preg_match('/^https?:\/\/(?:www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b(?:[-a-zA-Z0-9()@:%_\+.~#?&\/=]*)$/i', $url);

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FAQ

How does this regular expression for Web URL (HTTP/HTTPS) work?

Robust URL validation regex capturing protocols, optional www subdomains, hostnames, query query parameters, and URL path anchors. The pattern is: ^https?:\/\/(?:www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b(?:[-a-zA-Z0-9()@:%_\+.~#?&\/=]*)$

How to use this regex in JavaScript and Python?

In JavaScript: new RegExp("^https?:\/\/(?:www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b(?:[-a-zA-Z0-9()@:%_\+.~#?&\/=]*)$").test(input). In Python: re.match(r"^https?:\/\/(?:www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b(?:[-a-zA-Z0-9()@:%_\+.~#?&\/=]*)$", input).

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