Examine source code of SkrivaText

{
  "manifest_version": 2,
  "name": "SkrivaText",
  "description": "Discover the spelling and grammar checker of the future, created by experts in language, speech therapy and pedagogy.",
  "version": "1.2.0",
  "version_name": "1.2.0",
  "default_locale": "en",
  "background": {
    "scripts": [
      "service-worker.js"
    ]
  },
  "icons": {
    "16": "assets/icon-16.png",
    "24": "assets/icon-24.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "64": "assets/icon-64.png",
    "128": "assets/icon-128.png"
  },
  "browser_action": {
    "default_popup": "action-popup.html",
    "default_icon": {
      "16": "assets/icon-16.png",
      "24": "assets/icon-24.png",
      "32": "assets/icon-32.png",
      "48": "assets/icon-48.png",
      "64": "assets/icon-64.png",
      "128": "assets/icon-128.png"
    }
  },
  "content_scripts": [
    {
      "run_at": "document_start",
      "matches": [
        "*://docs.google.com/document/d/*",
        "*://docs.google.com/document/u/*",
        "*://docs.google.com/document/before*",
        "*://docs.google.com/document/create*",
        "*://*.officeapps.live.com/we/wordeditorframe.aspx",
        "*://*.officeapps.live.com/we/wordeditorframe.aspx*",
        "*://assessment.trelson.com/*",
        "*://app.trelson.dev/*"
      ],
      "all_frames": true,
      "js": [
        "content-script.js"
      ],
      "css": [
        "content-script.css"
      ]
    }
  ],
  "permissions": [
    "storage",
    "identity"
  ],
  "host_permissions": [
    "https://idp.texthelp.com/*",
    "https://skrivatext.texthelp.com/*",
    "https://dictionary.oribi.se/*"
  ],
  "web_accessible_resources": [
    "google-docs-integration.js",
    "views/*.html"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{ee52ade9-f2e8-4ff9-8a0e-41e568ff1eb4}"
    }
  }
}