Examine source code of Coconut Shell

{
  "manifest_version": 2,
  "name": "Coconut Shell",
  "version": "1.0.1",
  "description": "A Firefox extension that allows you to encrypt messages before sending them on any website. It uses OpenPGP.js to encrypt and decrypt messages. Just select the text you want to encrypt, right-click, and select 'Encrypt'. You can also decrypt messages by selecting the text and selecting 'Decrypt'.",
  "permissions": [
    "tabs",
    "contextMenus",
    "activeTab",
    "storage",
    "notifications"
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/content.js",
        "src/openpgp.min.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "src/popup/popup.html"
  },
  "web_accessible_resources": [
    "src/popup/popup.html",
    "src/popup/popup.js",
    "src/popup/popup.css"
  ],
  "icons": {
    "16": "icon/16x16.png",
    "24": "icon/24x24.png",
    "32": "icon/32x32.png",
    "64": "icon/64x64.png",
    "128": "icon/128x128.png",
    "256": "icon/256x256.png",
    "512": "icon/512x512.png"
  },
  "commands": {
    "encrypt_text": {
      "suggested_key": {
        "default": "Ctrl+Period",
        "mac": "Command+Period"
      },
      "description": "Encrypt selected text"
    },
    "decrypt_text": {
      "suggested_key": {
        "default": "Ctrl+Comma",
        "mac": "Command+Comma"
      },
      "description": "Decrypt selected text"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "qwrdfasdfa@coconutshell.org",
      "strict_min_version": "109.0"
    }
  }
}