This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.


The ::-webkit-progress-value CSS pseudo-element represents the filled-in portion of the bar of a <progress> element. It is a child of the ::-webkit-progress-bar pseudo-element.


Not part of any specification. This is a proprietary pseudo-element specific to WebKit/Blink.

Browser compatibility

Feature Firefox (Gecko) Chrome Internet Explorer Opera Safari
Basic support Not supported (Yes) Not supported (Yes) (Yes)
Feature Firefox Mobile (Gecko) Android IE Phone Opera Mobile Safari Mobile
Basic support Not supported (Yes) Not supported (Yes) (Yes)

See also

Document Tags and Contributors

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