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manifest.json
{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "LazyFonts - Google Font Previewer",
  "description": "Directly access all the available fonts on Google Fonts. Test, explore, compare and use.",
  "version": "1.2.0",
  "permissions": [
    "scripting",
    "storage",
    "tabs",
    "declarativeNetRequest"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {},
  "icons": {
    "16": "./images/logo16.png",
    "32": "./images/logo32.png",
    "48": "./images/logo48.png",
    "128": "./images/logo128.png"
  },
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "mellowtel.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ]
}