This article deals with websites not appearing correctly in Firefox.
- If you receive error messages when trying to load websites, see the Websites don't load - troubleshoot and fix error messages article instead.
- If any of the more specific articles below apply to you, see those articles first:
Table of Contents
Clear the cookies and cache
Firefox caches websites, which means it saves some files on your machine so that it doesn't have to re-download everything when you visit sites. If a website has updated their code, Firefox may still be using some of the old code along with some of the new, which can make a web page display incorrectly. To fix this, you need to clear the cookies and cache:
- Click the Library button on your toolbar. (If you don't see it there, click the menu button then click .) Click and select .
- In the Time Range to clear: drop-down, select Everything.
- Below the drop-down menu, select both Cookies and Cache. Make sure other items you want to keep are not selected.
- Click .
Some websites may not look right at different zoom levels. To reset Zoom setting, for the site, press Ctrl + 0command + 0 and for all sites, see the documentation about the Zoom add-on you use.
Reset the minimum font size
Some sites do not display properly with a minimum font size. To reset the minimum font size:
- Click the menu button and select . .
- Select the panel. panel and navigate to Language and Appearance
- In the Fonts & Colors section, click .
- Change the Minimum font size to None.
Reset the page style
You may have inadvertently set the page style to. To ensure Firefox is set to use the page's default style:
- Press the Alt key to temporarily bring up the traditional Firefox menusOn the menu barAt the top of the Firefox window, click on the menu, then select , then click .
Now that the page is using its default style, it may be displayed correctly.
Check that your system clock is set correctly
In some instances the loading and verification of secure web content will be time-dependent, so you should check that date, time and timezone are set correctly on your system.
Disable problematic extensions or hardware acceleration
Some extensions may interfere with the way websites are displayed or your graphics card and drivers don't display some web content correctly when hardware acceleration is turned on. Follow the instructions in the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article to see if one of these is causing the problem.
Report the website
Occasionally you may come across a page that simply doesn't work in Firefox. If that happens, please report the problem by visiting Webcompat.com.
If you are using Firefox Beta, Developer Edition or Nightly, click on the page actions menu (three dots in the address bar) and select.
Based on information from Websites look wrong (mozillaZine KB)