Words on websites could become bold or italic if your font is corrupt or a setting is changed.
Table of Contents
Font settings
To verify your settings are correct:
- In the Menu bar at the top of the screen, click and then select or , depending on your macOS version.Click the menu button
and select .
- Select the panel.
- Under Fonts and Colors, click .
- The default settings are:
- Fonts for: Western
- Proportional: Serif
- Size: 16
- Serif: Times New RomanTimesSerif
- Sans-serif: ArialHelveticaSans-serif
- Monospace: Courier NewCourierMonospace
- Size: 13
- Minimum font size: None
- Default Character Encoding: Western (ISO-8859-1)
Extensions
Sometimes an extension causes this problem. To check, see Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems.
Corrupt or Missing Fonts
To make sure that your fonts are not corrupt or missing:
- Click the Firefox menu and select .Click the Firefox menu at the top of the screen and select .Click the Firefox menu and select .
- Open the run dialog.
- (7/Vista): Click the Windows button. The Start Search box is the run dialog.
- (XP): Click the Windows button, then select .
- Type %WINDIR% and press Enter.
- Open the folder called Fonts.
- Verify that you have these fonts:
- Arial.ttf
- Arial Black.ttf
- Arial Bold.ttf
- Arial Italic.ttf
- Arial Bold Italic.ttf
- Times New Roman.ttf
- Times New Roman Bold.ttf
- Times New Roman Italic.ttf
- Times New Roman Bold Italic.ttf
- Courier New.ttf
- Courier New Bold.ttf
- Courier New Italic.ttf
- Courier New Bold Italic.ttf
If you have a font that is a different name, rename it to be the right name. Examples:
- Arial2.ttf instead of Arial.ttf
- Arrial.ttf instead of Arial.tff
