-moz-device-pixel-ratio

Non-standard
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.

Deprecated
This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Avoid using it and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

-moz-device-pixel-ratio

Requires Gecko 2.0(Firefox 4 / Thunderbird 3.3 / SeaMonkey 2.1)
Deprecated since Gecko 16

The -moz-device-pixel-ratio Gecko-only CSS @media media feature can be used to apply styles based on the number of device pixels per CSS pixel.

Do not use this feature. Use the resolution feature with the dppx unit instead.

-moz-device-pixel-ratio may be used for compatibility with Firefox older than 16 and -webkit-device-pixel-ratio with WebKit-based browsers that do not support dppx. Example:

@media (-webkit-min-device-pixel-ratio: 2), /* Webkit-based browsers */
       (min--moz-device-pixel-ratio: 2),    /* Older Firefox browsers (prior to Firefox 16) */
       (min-resolution: 2dppx),             /* The standard way */
       (min-resolution: 192dpi)             /* dppx fallback */ 

See this CSSWG article for compatibility good practices regarding resolution and dppx.

Note: This media feature is also implemented by Webkit and by IE 11 for Windows Phone 8.1 as -webkit-device-pixel-ratio. The min and max prefixes as implemented by Gecko are named min--moz-device-pixel-ratio and max--moz-device-pixel-ratio; but the same prefixes as implemented by Webkit are named -webkit-min-device-pixel-ratio and -webkit-max-device-pixel-ratio.

Syntax

<number>
The number of device pixels per CSS pixel.


Media: media/visual
Accepts min/max prefixes: yes

Document Tags and Contributors

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