Webflags: gi

Data URI

Match base64-encoded data URIs, including the MIME type and the base64 payload.

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
data:[\w\/+\-.]+(?:;[\w=\-]+)*;base64,[A-Za-z0-9+\/=]+   (flags: gi)

Raw source: data:[\w\/+\-.]+(?:;[\w=\-]+)*;base64,[A-Za-z0-9+\/=]+

How it works

Starts with data:, then a MIME type (word chars, slashes, plus, hyphen, dot), optional parameters, then ;base64, and the base64 payload (letters, digits, +, /, =).

Examples

Input

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUA

Matches

  • data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUA

Common use cases

  • •Inline image extraction from HTML/CSS
  • •Bundle size auditing
  • •Asset migration tooling
  • •Security scanning for embedded payloads

Related patterns

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CSS rgb() Color

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Match HTML comments, including multi-line comments and empty ones.

HTML5 Color Input Value

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Validate the value of an HTML5 `<input type="color">` — exactly 6 hex digits with leading hash.

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