browserSettings.useDocumentFonts

A BrowserSetting object whose underlying value is a boolean.

By default, of course, web pages can specify the fonts they want using CSS properties like font-family. This setting enables an extension to instruct Firefox to ignore the fonts specified by the page, and only use system fonts.

Its underlying value is a boolean:

  • true: use the fonts specified by the web page. This is the default.
  • false: use the system fonts.

Browser compatibility

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desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Firefox for Android
Safari on iOS
useDocumentFonts

Legend

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Full support
Full support
No support
No support

Examples

Set the setting to false:

js
function logResult(result) {
  console.log(`Setting was modified: ${result}`);
}

browser.browserSettings.useDocumentFonts.set({ value: false }).then(logResult);