Analyze styleSheets for @font-face rules in background script

[felixfbecker]

The content script can't access .cssRules of cross-origin stylesheets, while the background page should be in theory (if not it could at least fetch() and parse it with a parser).

[rakeshhotker]

Could you share more information, please?

[Mattwmaster58]

I've run into this exact issue as well, it'll manifest itself in the console with this error: CSSStyleSheet.rules getter: Not allowed to access cross-origin stylesheet

[silexaltivium]

Inject crossorigin="anonymous" to could solve the problem

[silexaltivium]

This is the problem
https://www.chromium.org/Home/chromium-security/extension-content-script-fetches