Firefox is one of the most trusted browsers available in the market. It is mostly flawless and rarely faces issues. However, many users have reported that the font changes suddenly in Firefox. Also, it does not change with other browsers. If you encounter this problem, please read this article for the resolutions.
Firefox keeps changing the font randomly
The main cause of the font problem is either with extensions or files pushed through other websites. A known application responsible for it is the Rubik’s cube game. Many other online games could modify the browser settings. Try the following solutions sequentially to resolve the problem in discussion:
- Isolate the case with problematic extensions
- Disable problematic extensions
- Clear cache files and cookies on your Firefox browser
- Check status of Zoom
- Fix the font size
- Update Firefox
1] Isolate the case with problematic extensions
Since the primary cause of the problem is problematic extensions, you can consider isolating the cause for the same. To do so, try opening the Firefox browser in the InPrivate window mode. In this mode, the extensions will be disabled. The procedure is as follows.
- Open Firefox.
- Press CTRL+SHIFT+P. This will open the InPrivate window.
- Try opening pages in the InPrivate window.
- If they are working fine, then the issue is with the extensions. Else otherwise.
2] Disable problematic extensions
If everything works fine in the InPrivate window, then the issue is probably with the one or more extensions. Do the following in this case.
- Open Firefox.
- Click on the Application menu button at the top-right corner.
- Select Settings from the menu.
- Click on Extensions & Themes in the left pane.
- Go to the Extensions tab on the list on the left-hand side.
- You will notice a switch associated with every extension. You can turn it OFF to disable the extension.
Use hit and trial to find the problematic extension and remove the same.
3] Clear cache files and cookies on your Firefox browser
When you visit a website, the page stores files on your system named cache and cookies. These files can cause problems when corrupt. It is advisable to delete cache and cookies on your Firefox browser to resolve any issue caused by them. Don’t worry, they will be rebuilt later when you visit the webpage again.
4] Check status of Zoom
It could be possible that you think that the issue is with the font of the webpages, but it could be that the whole page has been zoomed. You can fix it as follows.
- Open Firefox.
- Click on the Application menu button at the top-right corner of the Firefox window.
- Find the Zoom bar and change it to 100%.
This will fix the problem.
5] Fix the font size
It might be possible that an extension or software changed the font size for Firefox. This can be foxed as follows.
- Open Firefox.
- Click on the Applications and menu button.
- Select Settings from the list.
- Go to the General tab on the list on the left-hand side.
- In the right pane, scroll down to the Language and Appearance section.
- In the Fonts section, they can change the Font type and Font size.
- Change the Font size to 16 since that is the default font size.
Alternatively, you can reset the Firefox settings to fix the font size.
6] Update Firefox
If the Firefox browser is obsolete, then you can update it to the latest version. Doing so will fix the issue if it has been caused due to the version being old. Make sure to update Firefox after the reboot process.
What font is used by Firefox?
Many must be wondering what font is used by Firefox in the first place. It looks quite different from what options you have with MS Word. The name of the font used by Firefox is Firefox Sharp Sans. It is a font type specific to the Firefox browser and is doubtfully available elsewhere.
Can I change the font for Firefox?
Yes, you can change the font for Firefox. It is easy. Open Firefox. Click on the Applications and menu button at the top-right corner. Select Settings from the list. Go to the General tab on the list on the left-hand side. In the right pane, scroll down to the Language and Appearance section. In the Fonts section, they can change the Font type.
What is the default font size for Firefox?
The default font size for Firefox is 16. It can be changed as mentioned earlier. You can also revert to the value upon resetting the browser. Other than this, you can find the option to simply reset the font settings.
