Pinned tab icons in Firefox can disappear after a profile refresh, a cookie clear, or a glitch in the favicon cache. This guide walks through every practical fix for getting those site logos back, from a simple tab reload to clearing site data for a single domain and refreshing the browser as a last resort.
If only one or two icons are missing, start with the targeted fixes. If every pinned tab is blank, the cause is more likely a corrupted favicon cache, and the broader clears later in this article will bring them back.
In this guide, I have covered:
Contents
Why Firefox pinned tab icons go missing
Firefox shows a small site logo (a favicon) next to the page title on every tab, including pinned tabs that sit on the left side of the tab strip. Those icons are not stored with your bookmarks. Firefox pulls them from a small SQLite cache called favicons.sqlite inside your profile, and the cache updates each time a page loads.
When a pinned tab icon is missing, one of three things usually happened. Firefox could not reach the site’s favicon on the last load, the favicon entry for that site was deleted from the cache, or an extension or theme is blocking the image. The fixes below start with the smallest change and work outward.
Reload the pinned tab
Start with the fastest fix. A reload asks Firefox to fetch the page and its favicon again, which is enough when the icon was lost because of a network blip or a temporary hiccup on the site.
- Right-click the pinned tab whose icon is missing.
- Select Reload Tab from the context menu.
- Wait for the page to finish loading and check the tab strip.
If several pinned tabs are missing their icons at the same time, choose Reload All Tabs from the same menu instead.
Force a hard refresh on the affected tab
A hard reload skips the cached version of the page and pulls a fresh copy, including any updated favicon. Use this when a normal reload still leaves the tab icon blank.
- Click the pinned tab to focus it.
- Press + + on Windows or Linux, or + + on macOS.
- Watch the tab strip while the page reloads.
TIP: If the icon still does not appear, leave the tab open for a few seconds after the reload finishes. Firefox refetches the favicon in the background and updates the tab strip once the image has been saved.
Clear site data for the affected domain
When only one site loses its pinned tab icon, the cached favicon for that domain has often been wiped along with its cookies. Clearing the site’s data and revisiting it forces Firefox to redownload the favicon from scratch.
- Open the menu
at the top right of Firefox and click Settings. - Select Privacy & Security from the left sidebar.
- Scroll to the Cookies and Site Data section and click Manage Data….
- Type the site's name into the Search websites field to find it faster.
- Select the site, then click Remove Selected.
- Click Save Changes and confirm the prompt.
- Reopen the site in a new tab and pin it again.
Firefox will fetch a fresh favicon on the next visit, and the pinned tab will pick up the new icon as soon as the image loads.
Clear cookies and cache for all of Firefox
If the previous step did not help, or if most of your pinned tabs are missing their icons, the favicon cache itself is probably stale. Clearing cookies and cache forces Firefox to rebuild the favicon entries the next time each site loads. You’ll know it worked when the pinned tabs start showing their site logos again after a reload.
Once the clear finishes, open a few of your pinned sites again one by one so Firefox can refetch their favicons. The icons return to the tab strip as each page finishes loading. If you need a refresher on the full process, see how to clear cookies and cache in Firefox.
Test Firefox without extensions
Content blockers, privacy extensions, and some themes can strip favicons before the page even renders. Troubleshoot Mode loads Firefox with extensions and themes disabled, which is the quickest way to confirm whether an add-on is to blame.
- Click the hamburger menu at the top right of Firefox.
- Click Help.
- Select Troubleshoot Mode….
- Click Restart in the confirmation dialog.
Open your pinned sites in the Troubleshoot window. If the icons reappear, re-enable your extensions one at a time until the missing icon returns, then keep that one disabled or replace it.
Refresh Firefox as a last resort
Refresh resets Firefox to its default state while keeping your bookmarks, history, and saved logins. Use it only when the previous steps have not restored your pinned tab icons, since it also disables your add-ons and resets site permissions.
- Click the hamburger menu , choose , then select .
- On the Troubleshooting Information page, find the Give Firefox a Tune Up section on the right.
- Click Refresh Firefox and confirm by clicking in the dialog.
- Wait for Firefox to restart. Your bookmarks and logins are preserved, but extensions and most site settings are reset.
After the refresh, reopen your pinned sites so Firefox can build a fresh favicon cache. The site logos should appear within a few seconds of each page finishing its first load.
Other things to try if the icons are still missing
These are common causes that survive every fix above, and they are worth checking once you have walked through the main steps.
- The site genuinely has no favicon. Some websites do not publish a favicon at all, so the tab will always show a generic globe. Open the site in another browser to confirm.
- The favicon file is broken on the site. A bad or empty favicon image on the server will keep Firefox from showing one. Only the site owner can fix this.
- Hardware acceleration is glitching the image. Toggle hardware acceleration off in Settings, restart Firefox, and check the pinned tabs again. See how to clear cookies and cache in Firefox for a related cleanup.
- Sync brought the pinned tabs from another device. Pinned tabs synced from a phone or another computer may not carry the favicon. Visit each site once on the device you are reading this on to repopulate the local cache.
Frequently Asked Questions
Why do my Firefox pinned tabs suddenly have no icons?
The most common cause is a cleared or corrupted favicon cache. Firefox stores favicons in a small file inside your profile, and that file can be reset whenever cookies, site data, or the browser itself is refreshed. A single network glitch can also leave one tab without an icon until you reload it.
Does Firefox have a setting to hide favicons on tabs?
No. There is no built-in preference in Firefox to turn off tab favicons for specific sites or for the browser as a whole. Missing icons almost always come from a cache problem, an extension, or a site that does not publish a favicon, rather than a hidden setting.
Will clearing cookies log me out of websites?
Yes. Clearing cookies and site data signs you out of every site that uses cookies to keep you signed in, and any pinned tabs whose icons depend on that cached data will need to refetch the favicon. If you only want to fix one missing icon, clear the data for that single site in Privacy & Security instead of clearing everything.
How do I re-pin a tab after fixing its icon?
Right-click the tab and choose Pin Tab. The tab shrinks to the left side of the tab strip and keeps its current favicon. Pinned tabs stay open across Firefox restarts, so the icon is preserved as long as the favicon stays in the cache.
Can a theme cause pinned tab icons to disappear?
Yes. Some themes, especially third-party ones that override tab styling, can hide or replace favicons. Switching back to the default theme in Settings → Add-ons → Themes is a quick way to test this. If the icons come back, the theme was the cause and you can pick a different one.
