Examine source code of Bookmark Info

{
  "manifest_version": 2,
  "name": "Bookmark Info",
  "version": "2.26.4",
  "browser_specific_settings": {
    "gecko": {
      "id": "{d270de14-df6e-4f0b-a81a-7163af0368f3}"
    }
  },
  "description": "The extension improves the browser's capabilities for working with bookmarks",
  "homepage_url": "https://github.com/PavelPoroskov/my-web-extensions/",
  "permissions": [
    "bookmarks",
    "history",
    "menus",
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": false
  },
  "browser_action": {
    "default_popup": "popup/popup.html"
  },
  "commands": {
    "BOOKMARK_ADD_FROM_INPUT_KBD": {
      "suggested_key": {
        "default": "Ctrl+Shift+Comma"
      },
      "description": "Bookmark page. Get folder name from input"
    },
    "BOOKMARK_ADD_FROM_SELECTION_KBD": {
      "suggested_key": {
        "default": "Ctrl+Shift+Period"
      },
      "description": "Bookmark page. Get folder name from selection"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  }
}