Helix Font Fallback

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Helix Font Fallback",
  "description": "Helix Font Fallback computes the fallback fonts for all the fonts loaded on the page. This is helpful to prevent CLS (Web Vitals).",
  "version": "1.1.0",
  "manifest_version": 3,
  "background": {
    "service_worker": "js/background.js"
  },
  "action": {},
  "permissions": [
    "scripting"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "js/shared/fonts.js"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "host_permissions": [
    "*://*/"
  ],
  "icons": {
    "16": "icons/helix_logo_16.png",
    "32": "icons/helix_logo_32.png",
    "48": "icons/helix_logo_48.png",
    "128": "icons/helix_logo_128.png"
  }
}