Webflags: g

URL Query String

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

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
\?([^#\s]+)   (flags: g)

Raw source: \?([^#\s]+)

How it works

\? matches the literal question mark. ([^#\s]+) captures everything up to (but not including) a `#` (fragment) or whitespace (URL boundary). Use URL parsing libraries for production, but this regex is handy for quick log scraping.

Examples

Input

https://example.com/page?utm_source=google&id=42

Matches

  • ?utm_source=google&id=42

Input

/api?token=abc#section

Matches

  • ?token=abc

Input

no query string here

No match

—

Common use cases

  • •Log analysis — extracting tracking params
  • •URL rewriting / canonicalisation tooling
  • •Detecting PII leaked in query strings
  • •Marketing attribution parsing

Related patterns

URL Path Segment

Web

Match individual `/segment` parts of a URL path, capturing each one.

URL Slug

Web

Validate URL slugs: lowercase letters and digits separated by single hyphens, no leading/trailing hyphens.

URL Validation

Web

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

GitHub Repository URL

Web

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

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