I can't get it to work for pages on my local disk, e.g. a URL that begins with "file:///C:/Users/markb/Dropbox/Shared/Documents/Web%20Pages/How%20To/"

When you are on a different tab when the tab loads, the icon will not change.

It works well for tabs, but Bookmarks can revert.

I specifically got this as I needed a certain site bookmarked but I didn't like how it's icon contrasted poorly with my theme. Now the alternate icon only shows up on the tab and the bookmark has gone back to the old icon which is rather disappointing.

5/5 for initially meeting my use case and being relatively straightforward to figure out,
-1 for reverting the bookmark to the old icon the next time I opened Firefox.
-1 since I can't figure out how to get the bookmark to use the adjusted icon, even though the tab is correct.

Thanks for this extension. Makes finding tabs related to large sites much easier :).

Would be 5 stars if the URL match could take multiple URLs. e.g.

Name: Big-Site Section A
URL(s): https://domain.big-site/a-1;https://domain.big-site/a-2;https://domain.big-site/a-3

At the minute I need a config for each.

I can't seem to get it to work. There are a lot of google sites, so I would like e.g. books.google.com to display a book favicon and not the "G."
I opened the page for the extension. Entered https://books.google.com
downloaded and selected a book favicon and saved it as a png file. Now when I type in books.google.com to the address bar the favicon of the tab is changed to the book favicon of my choice but my bookmark bar favicon remains the G even if I drag the new book favicon Google Books tab to the book mark bar.

Additionally, pages that I open with my bookmark bar entry at the same address, do not have their favicon changed, unless I reload them.

I have tried it with another URL and the same result.

I am not using the name string now but I did try it.

I have tried deleting history too.

This extension has been working well for the last few months, but now it just stopped working.

I know this is experimental, so feedback is important to improve it. When I first installed it, the add-on worked like a charm. Unfortunately, that's not the case anymore. For some reason, the favicons are not staying. There have been updates to Firefox since I installed it, so that may have to do with it. I hope the issue can be fixed because I really like adding favicons to certain pages.