Webflags: gi

URL Validation

Match http and https URLs with optional www prefix, paths, query strings, and fragments.

Try it in RegexPro →

Available in

JSSupported

JavaScript / ECMAScript

Browser-native RegExp. Default if you don't pick.

PYSupported

Python (re)

CPython stdlib `re`. Unicode-aware `\w` and `\d` by default.

GOSupported

Go (RE2)

Linear-time matching. No backreferences or lookarounds.

Pattern

regexengine-agnostic
https?:\/\/(?:www\.)?[\w\-]+(?:\.[\w\-]+)+[\w\-._~:/?#\[\]@!$&'()*+,;=%]*   (flags: gi)

Raw source: https?:\/\/(?:www\.)?[\w\-]+(?:\.[\w\-]+)+[\w\-._~:/?#\[\]@!$&'()*+,;=%]*

How it works

Starts with http:// or https://, optional www., then one or more domain labels separated by dots, followed by any valid URL characters for the path and query.

Examples

Input

https://www.example.com

Matches

  • https://www.example.com

Input

http://api.example.org/v1/users?id=42

Matches

  • http://api.example.org/v1/users?id=42

Input

not a url

No match

—

Common use cases

  • •Extracting links from text or HTML
  • •Validating user-submitted URLs
  • •Web scraping and crawling
  • •Security scanning for external links

Related patterns

Twitter / X URL

Web

Match Twitter/X profile and status URLs, capturing the handle and (optional) tweet ID.

GitHub Repository URL

Web

Match GitHub repository URLs and capture the owner and repo segments.

LinkedIn Profile URL

Web

Match LinkedIn profile URLs and capture the profile slug.

URL Query String

Web

Extract the query string portion of a URL (everything between `?` and `#` or end-of-string).

Related concepts

Regex Flags in JavaScript: g, i, m, s, u, y

Concept

Flags modify regex behavior globally. g enables global matching, i makes it case-insensitive, m changes anchor behavior, s dots match newlines, u enables Unicode, y is sticky.

How to Extract URLs from Text with Regex

How-to

Use a permissive URL pattern with the g flag and String.matchAll. A practical regex accepts http/https, optional www, and common URL characters.

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