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 is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. 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.

The -moz-force-broken-image-icon extended CSS property can be used to force the broken image icon to be shown even when a broken image has an alt attribute.




A value of 1 means that the broken image icon is shown even if the image has an alt attribute. When the value 0 is used, the image will act as usual and only display the alt attribute.

Note: Even if the value is set to 1 the alt attribute will still be displayed, alongside the broken image icon.

Formal definition

Initial value0
Applies toimages
Computed valueas specified
Animation typediscrete

Formal syntax

Error: could not find syntax for this item



<img src="/broken/image/link.png" alt="Broken image link" />


img {
  -moz-force-broken-image-icon: 1;
  height: 100px;
  width: 100px;


Note: Unless the image has a specified height and width the broken image icon will not be displayed but the alt attribute will also be hidden if -moz-force-broken-image-icon is set to 1.


  • This property will only work in Gecko-based browsers.
  • The use of this property is not recommended. A proper alt attribute should be used instead.


Not part of any standard.

Browser compatibility

BCD tables only load in the browser

See also