Examine source code of Collaborative bookmarks for teams - Bkmark

{
  "name": "Collaborative bookmarks for teams - Bkmark",
  "description": "Where teams and creators save information, share ideas, and discuss the gems they find on the web.",
  "version": "1.0.33",
  "omnibox": {
    "keyword": "/b"
  },
  "manifest_version": 2,
  "icons": {
    "16": "icons/favicon-16x16.png",
    "32": "icons/favicon-32x32.png",
    "64": "icons/favicon-64x64.png",
    "128": "icons/favicon-128x128.png",
    "256": "icons/favicon-256x256.png",
    "512": "icons/favicon-512x512.png",
    "1024": "icons/favicon-1024x1024.png"
  },
  "permissions": [
    "activeTab",
    "bookmarks",
    "contextMenus",
    "cookies",
    "storage",
    "https://app.bkmark.io/",
    "https://twitter.com/*",
    "https://mobile.twitter.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    "popup/popup.html"
  ],
  "browser_action": {},
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "windows": "Ctrl+Shift+Space",
        "mac": "Command+Shift+Space",
        "chromeos": "Ctrl+Shift+Space",
        "linux": "Ctrl+Shift+Space"
      }
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "chrome_style": true
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js"
      ]
    },
    {
      "matches": [
        "*://twitter.com/*"
      ],
      "js": [
        "twitter.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "addon@bkmark.io"
    }
  }
}