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GeezerVison is showing developer.mozilla.org — URL: createObjectURL() static method - Web APIs | MDN

URL: createObjectURL() static method

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Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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Note: This feature is available in Web Workers, except for Service Workers.

The createObjectURL() static method of the URL interface creates a string containing a blob URL pointing to the object given in the parameter.

For more information, see blob URLs.

To release an object URL, call revokeObjectURL().

Note: This feature is not available in Service Workers due to its potential to create memory leaks.

Syntax

js
URL.createObjectURL(object)

Parameters

object

A Blob (such as a File) or MediaSource object to create an object URL for.

Return value

A string containing an object URL that can be used to reference the contents of the specified source object.

Examples

See Using object URLs to display images.

Specifications

Specification
File API
# dfn-createObjectURL

Browser compatibility

See also

  • Blob URLs
  • Using files from web applications
  • Using object URLs to display images
  • URL.revokeObjectURL()
  • HTMLMediaElement.srcObject
  • FileReader.readAsDataURL()

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This page was last modified on Jul 23, 2025 by MDN contributors.

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