搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

Learn More

installed new version, now all the fonts show up as boxed ????? how do I fix?

  • 2 回覆
  • 1 有這個問題
  • 28 次檢視
  • 最近回覆由 cor-el

more options

all the copy shows up as boxed question marks

附加的畫面擷圖

所有回覆 (2)

more options

Type about:preferences#content<enter> in the address bar. Across from fonts and colors, press the Advanced button. On the bottom, turn on Allow Web Sites To Choose Their Own.

Fonts Information - Detected via Flash http://browserspy.dk/fonts-flash.php?detail=1

more options

This usually happens if you use third-party font managers that store their fonts is a not standard location. Firefox on Mac uses a rather restricted sandbox and blocks access to most of the file system and thus blocks access to the font file if the font isn't in a standard system location. Firefox isn't able to access the requested font and falls back to a 'last resort' font that shows all glyphs as a '?' or an 'A'.

You can right-click and select "Inspect Element" to open the builtin Inspector with this element selected.

You can check in the Rules tab in the right panel in the Inspector what font-family is used for selected text. You can check in the Font tab in the right panel in the Inspector what font is actually used because Firefox might be using a different font than specified by the website.


You can check for sandbox security issues when Firefox has a problem to access fonts installed locally.

You can set this pref to 2 or 1 on the about:config page to reduce the sandbox security level.

  • security.sandbox.content.level = 1
  • close and restart Firefox to make the change effective.

If '1' still doesn't have effect then try '0' to disable the sandbox.

If this didn't work then undo/reverse the change and reset the pref via the right-click context menu to the default value.

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.

See also: