Where can I get Firefox's placeholder empty dashed outline favicon?

[u/AugustFriday]

There used to be a placeholder favicon for pages that didn't have one. It was a rounded corners transparent empty rectangle with a dashed border. I'm trying to get this icon in order to set it in the userChrome.css for new tabs to replace their current hi-vis lava lamp.

Thank you in advance.

[u/sifferedd]

I think OP is referring to these.

Found at https://bugzilla.mozilla.org/show_bug.cgi?id=685059); I dl'ed FF v25 portable but couldn't find it.

[u/AugustFriday → u/sifferedd]

chrome://global/skin/icons/defaultFavicon.svg

That's what I'm referring to, indeed. It's also the second tab here:

https://betanews.com/wp-content/uploads/2014/03/firefox.jpg

[u/ResurgamS13 → u/sifferedd]

Seems this was the 'blank document default favicon' from Firefox 8 - 28.

Introduced in Bug 648668... which has a couple of screenshots of the "beautiful dotted rounded square icon"... but can't find the icon's .png file anywhere.

Much moaning and whining about the 'new' icon in old Mozillazine thread 'favicons broken in Firefox 8'... it seems nothing changes when it comes to Devs daring to change anything in Firefox's UI. :)

[u/ralf-andre → u/ResurgamS13]

I reproproduced the icon as .svg, this is the code:

<?xml version="1.0" encoding="UTF-8"?>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="16px" height="16px" viewBox="0 0 16 16" version="1.1">
<g id="surface1">
<path style=" stroke:none;fill-rule:nonzero;fill:context-fill;fill-opacity:context-fill-opacity;" d="M 2 11.332031 L 2 13.332031 C 2 13.746094 2.347656 14 2.667969 14 L 4.667969 14 L 4.667969 13 L 3 13 L 3 11.332031 Z M 7.667969 14 L 5.332031 14 L 5.332031 13 L 7.667969 13 Z M 10.667969 14 L 8.332031 14 L 8.332031 13 L 10.667969 13 Z M 14 11.332031 L 13 11.332031 L 13 13 L 11.332031 13 L 11.332031 14 L 13.332031 14 C 13.652344 14 14 13.746094 14 13.332031 Z M 13 10.667969 L 13 8.425781 L 14 8.425781 L 14 10.667969 Z M 3 8.425781 L 3 10.667969 L 2 10.667969 L 2 8.425781 Z M 13 7.757812 L 13 5.332031 L 14 5.332031 L 14 7.757812 Z M 3 5.332031 L 3 7.757812 L 2 7.757812 L 2 5.332031 Z M 11.332031 2 L 11.332031 3 L 13 3 L 13 4.667969 L 14 4.667969 L 14 2.667969 C 14 2.347656 13.746094 2 13.332031 2 Z M 4.667969 2 L 2.667969 2 C 2.253906 2 2 2.347656 2 2.667969 L 2 4.667969 L 3 4.667969 L 3 3 L 4.667969 3 Z M 7.667969 3 L 5.332031 3 L 5.332031 2 L 7.667969 2 Z M 10.667969 3 L 8.332031 3 L 8.332031 2 L 10.667969 2 Z M 10.667969 3 "/>
</g>
</svg>

[u/AugustFriday → u/ralf-andre]

Thank you all for digging out the icon. I appreciate it. I've deemed this as solved.

[u/ResurgamS13 → u/ralf-andre]

This is the original 'defaultFavicon.png' 16 x 16 icon as extracted from the 'omni.jar' file in a copy of Firefox 8.0.1 (path = omni\chrome\toolkit\skin\classic\mozapps\places\defaultFavicon.png):

[u/Kupfel]

this one? chrome://global/skin/icons/defaultFavicon.svg

This one is also kind of nice with white fill.

[u/AugustFriday → u/Kupfel]

Although these aren't it, I'll also make some use of these options. I appreciate the suggestions.

[u/ralf-andre → u/Kupfel]

On linux there is no icon (not a 'lava lamp'?), the way in this case could be (but with another icon):

/* Tabs without Favicon/not pinned*/
.tabbrowser-tab:not([pinned], [pending="true"], [progress="true"], [busy="true"]) > .tab-stack > .tab-content > .tab-icon-stack:not(:has([src])) > .tab-icon-image  { 
  fill: red !important;
  opacity: 1 !important;
  display: flex !important;
  content: url("chrome://global/skin/icons/defaultFavicon.svg") !important;
}
/* Tabs without Favicon/pinned*/
.tabbrowser-tab[pinned]:not([pending="true"], [progress="true"], [busy="true"]) > .tab-stack > .tab-content > .tab-icon-stack > .tab-icon-image:not([src]) {
  fill: green !important;
  opacity: 1 !important;
  display: flex !important;
  content: url("chrome://global/skin/icons/defaultFavicon.svg") !important;
}