This article describes how to troubleshoot printing problems in Firefox.

• For general information on printing in Firefox, see How to print websites.

Check other browsers and printers

You can see whether your problem is with Firefox, your printer, or the website you're visiting:

• Check to see whether the page prints correctly in another browser (such as Internet ExplorerSafariEpiphany)

If the page prints incorrectly in another browser also:

• There might be a problem with your printer: If you have another printer, try printing the page with that printer. If the second printer prints the page properly, update your printer driver from your printer manufacturer's website.
• There might be a problem with the page. Contact the website administrator.
  1. Open the website in Firefox
  2. Click the Help, and then select Report Broken Website....
  3. In the Problem type field, select Printed output is wrong.
  4. Optionally fill in other fields of the broken website report form, then click Submit Report.

If the page prints correctly in another browser, follow the instructions below in the following sections.

Reset Firefox printer setting

Several printer issues can be resolved by resetting Firefox's printer settings:

1. In the Location bar, type about:config and press EnterReturn.

   • The about:config "This might void your warranty!" warning page may appear. Click I'll be careful, I promise!, to continue to the about:config page.
2. In the FilterSearch field, type print.print_printer.
3. Right-clickHold down the Ctrl key while you click on the print.print_printer setting and select Reset.
4. At the top of the Firefox window, click on the Firefox button and then select ExitAt the top of the Firefox window, click on the File menu and then select ExitOn the menu bar, click on the Firefox menu and select Quit FirefoxAt the top of the Firefox window, click on the File menu and select Quit

When you start Firefox again, try printing the page with which you had problems previously.

Reset all Firefox printer settings

If the above steps did not work, you may want to reset all of Firefox's printer settings:

1. Open your profile folder:

   At the top of the Firefox window, click on the Firefox button, go over to the Help menuOn the menu bar, click on the Help menuAt the top of the Firefox window, click on the Help menu and select Troubleshooting Information. The Troubleshooting Information tab will open.

2. Under the Application Basics section, click on Open Containing FolderShow FolderShow in FinderOpen Directory. A window with your profile filesfolder will open.
Note: If you are unable to open or use Fire​fox, follow the instructions in Finding your profile without opening Firefox.
3. At the top of the Firefox window, click on the Firefox button and then select ExitAt the top of the Firefox window, click on the File menu and then select ExitOn the menu bar, click on the Firefox menu and select Quit FirefoxAt the top of the Firefox window, click on the File menu and select Quit
4. In your profile folder, copy the prefs.js file to another folder to make a backup of it.
5. Open the original prefs.js file in a text editor (such as WordpadTextEditEmacs).
6. Remove all lines in prefs.js that start with print. and save the file.

If something goes wrong when you open Firefox, close it again and overwrite prefs.js with the backup you made.

Change the default font

The Time New Roman font may not be recognized by your printer. Change the default font to a similar font, e.g. Trebuchet MS:

1. At the top of the Firefox window, click on the Firefox button and then select OptionsAt the top of the Firefox window, click on the Tools menu and then select OptionsOn the menu bar, click on the Firefox menu and select Preferences...At the top of the Firefox window, click on the Edit menu and select Preferences
2. Select the Content panel.
3. Under Fonts & Colors, select Trebuchet MS for the default font.
4. Click OK to close the Options windowClick Close to close the Preferences windowClose the Preferences window

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