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Why is there a favicon mismatch between tabs and saved bookmarks on certain websites?

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On Firefox 60/62, I am seeing a mismatch of images being used for icons shown on the tabs and those shown for saved bookmarks. So far, I am only seeing this on the MDL forums here https://forums.mydigitallife.net . I am testing this with the portable version of FF. Does anyone know what might be causing this?

FF should be using the same image seen on the tabs which reflects the favicon.ico. I don't understand why FF is using a different image for the saved bookmarks. See http://i66.tinypic.com/1fvlab.jpg If I delete the incorrect image from the favicon.sqlite db the saved bookmark icons revert back to the favicon image and there is no longer a mismatch. As soon as I select the reverted bookmark to view that web page, it gets refreshed with the other image which ends up back in the favicon.sqlite again. Why is FF picking up a different image for the bookmarks?

I would appreciate it if someone could try the portable and save some bookmarks from MDL to see if you get the same results as me.

On Firefox 60/62, I am seeing a mismatch of images being used for icons shown on the tabs and those shown for saved bookmarks. So far, I am only seeing this on the MDL forums here https://forums.mydigitallife.net . I am testing this with the portable version of FF. Does anyone know what might be causing this? FF should be using the same image seen on the tabs which reflects the favicon.ico. I don't understand why FF is using a different image for the saved bookmarks. See http://i66.tinypic.com/1fvlab.jpg If I delete the incorrect image from the favicon.sqlite db the saved bookmark icons revert back to the favicon image and there is no longer a mismatch. As soon as I select the reverted bookmark to view that web page, it gets refreshed with the other image which ends up back in the favicon.sqlite again. Why is FF picking up a different image for the bookmarks? I would appreciate it if someone could try the portable and save some bookmarks from MDL to see if you get the same results as me.

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Hi, this is a problem caused by the "my digital life" website. They have two very different icons available to use as favicons.

For tabs, we end up using the default favicon one, as there's nothing better specified. For the library window, there's an apple-touch-icon specified that we'll use, since the resolution is likely to be better than the favicon - to avoid blocky graphics.

Really, the web site should provide a better list of alternatives for different scales which are also consistent so as not to confuse users.

We are going to file an enhancement that we should try and pick an image closer to the resolution we want, which would alleviate this case.

I've also submitted some feedback to my digital life requesting that they improve their favicon support.

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IMHO it would be better to keep the images the same and not mismatch them just because some other image has a better resolution. For icons, I don't see where higher resolution really improves what's displayed. We are talking about icons here, not hi-res images. Favicon has it's purpose and I don't see why there needs to be a new formula for deciding how icons get chosen This just complicates things and as you said, leads to confusion. I also noticed you can no longer show the favicon in the url-bar which to me is a step backwards. Somebody must not like favicons and decided to "improve" (LOL) the situation. IMO it's most likely change for the sake of change without thinking it through.

Okulungisiwe ngu click-click

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I Think I found the problem that causes the favicon mismatch. It has to do with the DPI setting used for the display. If you use the normal DPI which is 100% there will be no mismatch. If you change the display DPI to 125% (medium), Firefox uses a different image for the bookmark, but not for the tab. This is inconsistent and needs to be reported as a bug. The favicon should persist for both tab and bookmark independent of what your dpi setting is.

Filed bug report 1494772 on Bugzilla.

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