How to get firefox to show image placeholders?

[max vi]

Good! the code above really helps.
I changed it a little bit
img:-moz-broken,img:-moz-user-disabled {
-moz-force-broken-image-icon:1;
width:24px;
height:24px;
}

[max vi]

also display placeholders for missing/disabled objects.
There may be better ways of doing this but I couldn't think of any

object:-moz-broken::before, object:-moz-user-disabled::before {
content: url("data:image/gif,GIF89a%18%00%18%00%F7%00%00%B1%B1%B1%FF%FF%FF%E5%E5%E5%FF%FF%FF%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%2C%00%00%00%00%18%00%18%00%00%08%8B%00%09%08%1CH%B0%A0A%81%00%08%04X%C8%B0%A1%C3%87%01%12B%9C%08Q%22%C5%8B%0B-b%A4%A81%23%80%8F%20%3FN%EC%18%F1!%00%01%00**l%98%D2aJ%94%26W2l%C9r!L%9623%9A%0C%E92gI%87%02%82%DE%9C%E9%F3%A3%80%00(O%9E%FCI%B4%E2%CD%94J%7B%8E4%19%93%AA%CE%8B%24%A3j%8DH3cQ%A4KQ%8A%ED%1A%F1%2BG%A9%2CC%AA%15%89s%23V%9Fn%DB%C6U9%B7%E2%DA%BBxA%06%04%00%3B");
}

[max vi]

I thought it would work but it didn't
some help please

[3XWZX]

the css way can't complete fix it
4 years !!
this bug maybe cause by core error , need the develop team to fix it

[Guest]

BUMPAPPA

[Guest]

This greasemonkey script seems to do the trick:

http://userstyles.org/styles/11093

Specifically, it shows a broken image placeholder when alt="" and there aren't any width/height properties. Without the script Firefox doesn't show any indication of a broken image.

[Guest]

any updates on this?

[Guest]

bump

[Bluefang]

No, there have been no updates, so please stop bumping this topic.

Bug 333954 - Broken image icon doesn't show in strict mode
Don't comment unless you have something constructive to add (like a code patch)

[MAL1K]

Force Image Placeholders

https://addons.mozilla.org/en-US/firefox/addon/7811

Hope it will solve problem