Examine source code of bt-linkding

{
  "manifest_version": 3,
  "name": "bt-linkding",
  "browser_specific_settings": {
    "gecko": {
      "id": "bt-linkding@ttscoff.github.io",
      "data_collection_permissions": {
        "required": [
          "browsingActivity",
          "websiteContent",
          "bookmarksInfo"
        ],
        "optional": []
      }
    }
  },
  "version": "1.0.0",
  "description": "Companion extension for the linkding bookmark service",
  "homepage_url": "https://github.com/ttscoff/bt-linkding",
  "icons": {
    "48": "icons/logo_48x48.png",
    "96": "icons/logo_96x96.png",
    "128": "icons/logo_128x128.png"
  },
  "background": {
    "scripts": [
      "build/background.js"
    ]
  },
  "omnibox": {
    "keyword": "ld"
  },
  "action": {
    "default_icon": {
      "19": "icons/button_19x19.png",
      "32": "icons/button_32x32.png",
      "38": "icons/button_38x38.png"
    },
    "default_title": "Add bookmark (Alt+Shift+L)"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+Shift+L"
      },
      "description": "Open a popup to bookmark current page."
    }
  },
  "options_ui": {
    "page": "options/index.html"
  },
  "permissions": [
    "tabs",
    "storage",
    "contextMenus",
    "scripting"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ]
}