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    window.URL.createObjectURL

    This is an experimental technology
    Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.

    Summary

    The URL.createObjectURL() static method creates a DOMString containing an URL representing the object given in parameter. The URL lifetime is tied to the document in the window on which it was created. The new object URL represents the specified File object or Blob object.

    Syntax

    objectURL = URL.createObjectURL(blob);
    

    Parameters

    blob
    Is a File object or a Blob object to create a object URL for.

    Example

    See Using object URLs to display images.

    Notes

    Each time you call createObjectURL(), a new object URL is created, even if you've already created one for the same object. Each of these must be released by calling URL.revokeObjectURL() when you no longer need them. Browsers will release these automatically when the document is unloaded; however, for optimal performance and memory usage, if there are safe times when you can explicitly unload them, you should do so.

    Specifications

    Specification Status Comment
    File API
    The definition of 'URL' in that specification.
    Working Draft Initial definition.

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
    Basic support 8 with URL prefixed as webkitURL
    23
    4.0 (2) 10 15 6 with URL prefixed as webkitURL
    7
    In a Web Worker 10 with URL prefixed as webkitURL
    23
    21 (21) 11 15 6 with URL prefixed as webkitURL
    7
    Feature Chrome for Android Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
    Basic support 18 with URL prefixed as webkitURL 4.0 with URL prefixed as webkitURL 14.0 (14) ? 15 with URL prefixed as webkitURL 6.0 with URL prefixed as webkitURL
    In a Web Worker 18 with URL prefixed as webkitURL (Yes) with URL prefixed as webkitURL 14.0 (14) ? 15 with URL prefixed as webkitURL 6.0 with URL prefixed as webkitURL

    See also

    Document Tags and Contributors

    Contributors to this page: teoli
    Last updated by: teoli,
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