Examine source code of Snippet - Web & PDF Highlighter / Kindle Importer

{
  "name": "__MSG_appName__",
  "version": "6.0.5",
  "manifest_version": 2,
  "description": "__MSG_appDescription__",
  "homepage_url": "https://gosnippet.com",
  "icons": {
    "16": "images/purple/icon-16.png",
    "32": "images/purple/icon-32.png",
    "48": "images/purple/icon-48.png",
    "128": "images/purple/icon-128.png"
  },
  "default_locale": "en",
  "permissions": [
    "<all_urls>",
    "storage",
    "contextMenus",
    "tabs",
    "http://*/*",
    "https://*/*",
    "http://gosnippet.com/",
    "https://gosnippet.com/",
    "https://read.amazon.com/*",
    "https://read.amazon.ca/*",
    "https://read.amazon.co.uk/*",
    "https://read.amazon.com.au/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "19": "images/purple/icon-19.png",
      "38": "images/purple/icon-38.png"
    },
    "default_title": "Snippet Highlighter - click to toggle on/off"
  },
  "options_ui": {
    "page": "options/index.html",
    "chrome_style": true
  },
  "commands": {
    "toggle-snippet": {
      "suggested_key": {
        "default": "Alt+Shift+X"
      },
      "description": "Toggle Snippet Highlighter on/off"
    },
    "toggle-snippet-sidebar": {
      "suggested_key": {
        "default": "Alt+X"
      },
      "description": "Show/Hide Snippet sidebar"
    },
    "capture-screen": {
      "suggested_key": {
        "default": "Alt+C"
      },
      "description": "Screen snip"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://gosnippet.com/*",
        "https://gosnippet.eu/*",
        "http://gosnippet.com/*",
        "http://gosnippet.eu/*"
      ],
      "js": [
        "content_scripts/content-app.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    },
    {
      "matches": [
        "http://*/*",
        "https://*/*",
        "file://*/*"
      ],
      "js": [
        "content_scripts/content-main.js"
      ],
      "css": [
        "css/sidebar.css",
        "css/content-main.css"
      ],
      "run_at": "document_end",
      "all_frames": false
    },
    {
      "matches": [
        "https://read.amazon.com/*",
        "https://read.amazon.ca/*",
        "https://read.amazon.co.uk/*",
        "https://read.amazon.com.au/*"
      ],
      "js": [
        "content_scripts/content-kindle.js"
      ],
      "css": [
        "css/content-kindle.css"
      ],
      "run_at": "document_end",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    "images/*",
    "content_scripts/frames/popover/index.html",
    "content_scripts/frames/select-screenshot/index.html",
    "content_scripts/frames/edit-screenshot/index.html",
    "content_scripts/frames/kindle-choose-book/index.html",
    "content_scripts/frames/application/index.html",
    "pdfjs/web/viewer.html"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{37b8f7e4-0b98-4557-b43b-e95429aadb3f}"
    }
  }
}