See how this extension works for you: https://addons.mozilla.org/en-US/firefox/addon/favicon-restorer/

As words seems to be not enough to explain and many people are dislexic, take a look at the snapshot below, thanks and best regards.

Whoops, sorry about that; I didn't read the description for that extension carefully enough. Second search of AMO it looks like the "Favicon Reloader" didn't get updated beyond Firefox 48, which is what I was looking for the first time.

I don't have a solution for you, I guess.

I haven't used that type of extension myself for over 10 years; never had to start from scratch with bookmarks and always had an HTML "backup" saved in case the favicons "got dumped" and needed to import them. Problem is that the HTML "backups" can't done automatically any more, as I was doing.''

Stab in the dark :

Type in the address bar about:config (press Enter) (promise to be careful, if asked)

Type in the search bar : browser.chrome.

Do the preferences that show up still have their default values  ?

All default values, the bookmarks were imported from a FF backup, maybe I find a favicon db into that?

If it exist how can I add db backup data to actual favicon db?

Thank you.

I reached the conclusion that favicons are stored into coockies and not in a database shared by links, this would be a suggestion for developers to avoid increasing of data amount handled by firefox day by day, redundancy is a trick played even by nature but it was reduced by life competiton, browsers has no natural competitors, so they can grow as a cancer, keep them thin! Cheers. P.S. bring out the garbage.

Maybe this add-on will do the trick :

https://addons.mozilla.org/en-US/firefox/addon/bookmarks-favicon-images/

Worth a try ......

elBepi61 said

I reached the conclusion that favicons are stored into coockies

Favicons (and bookmarks) are stored in the places.sqlite file .....

Alwais ready to learn, what kinda file is that with .sqlite extension? Thank you for the link, seems to be very nice, i'll keep in mind for the other notebooks I own, but for the one I'm using now i prefer not to overload anithing, it's an old Travelmate with a P4 3G and 2G of DDR400, running XPhome, due to the fact that is really difficult I find some SO-DIMM 2G of that kind (mainboard supports 3G max), the most I can do to enhance it is to update all drivers and bios and migrate to XP pro (seems it's possible without reinstalling) to get a full use of the dual processor (that home release use as one balancing charge), so i keep firefox as it is since I'll be forced to change. Thanks and bye.

elBepi61 said

Always ready to learn, what kinda file is that with .sqlite extension?

Storage is a SQLite data base - would you take a look at this article (and scroll down to 'Bookmarks Table' and a little further down to
'Favicon Table'  ?

https://developer.mozilla.org/en-US/docs/Mozilla/Tech/Places/Database