Examine source code of Background Pin

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "0.1.0",
  "browser_specific_settings": {
    "gecko": {
      "id": "background-pin@menhera.org",
      "strict_min_version": "91.0"
    }
  },
  "default_locale": "en",
  "author": "Menhera.org",
  "homepage_url": "https://github.com/menhera-org/background-pin",
  "description": "__MSG_extensionDescription__",
  "permissions": [
    "storage",
    "<all_urls>"
  ],
  "incognito": "spanning",
  "background": {
    "page": "background.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "all_frames": true,
      "run_at": "document_start"
    }
  ],
  "browser_action": {
    "default_icon": {
      "16": "pin-disabled.svg"
    },
    "default_title": "__MSG_browserActionTitle__"
  },
  "icons": {
    "48": "pin-disabled.svg",
    "96": "pin-disabled.svg"
  }
}