Examine source code of SD Tools

{
  "name": "SD Tools",
  "version": "1.6.5resigned1",
  "description": "Provides sharedir.com tools for working with links from rapidgator, mediafire, nitroflare and other popular file sharing sites.",
  "manifest_version": 2,
  "short_name": "SDTools",
  "author": "Mario Ljubicic",
  "homepage_url": "https://sharedir.com",
  "applications": {
    "gecko": {
      "id": "sdtools@sharedir.com",
      "strict_min_version": "42.0"
    }
  },
  "browser_action": {
    "default_icon": "skin/sdtools.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "skin/sdtools_icon1.png",
    "32": "skin/sdtools.png",
    "48": "skin/sdtoolsb2_48.png",
    "128": "skin/sdtoolsb2_128.png"
  },
  "background": {
    "scripts": [
      "context.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content.js"
      ],
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "skin/*"
  ],
  "permissions": [
    "contextMenus",
    "tabs",
    "http://*/*",
    "https://*/*",
    "storage"
  ]
}