Examine source code of Memex

{
  "name": "Memex",
  "short_name": "Memex",
  "version": "3.20.9",
  "description": "Search, annotate and organize what you've read online.",
  "background": {
    "scripts": [
      "lib/browser-polyfill.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "content_script.js"
      ],
      "css": [],
      "run_at": "document_end"
    }
  ],
  "browser_action": {
    "default_title": "Memex",
    "default_popup": "./popup.html"
  },
  "applications": {
    "gecko": {
      "id": "info@worldbrain.io"
    }
  },
  "icons": {
    "16": "./img/browserIcons/logo-16.png",
    "48": "./img/browserIcons/logo-48.png",
    "128": "./img/browserIcons/logo-128.png"
  },
  "permissions": [
    "<all_urls>",
    "alarms",
    "bookmarks",
    "contextMenus",
    "tabs",
    "webNavigation",
    "notifications",
    "unlimitedStorage",
    "storage",
    "clipboardWrite"
  ],
  "web_accessible_resources": [
    "/lib/pdf.worker.min.js",
    "/img/*",
    "/content_script*.css",
    "/fonts/*",
    "content_script_*.js",
    "sidebar.html",
    "file:/*",
    "chrome-extension:/*",
    "blob:*",
    "data:*",
    "filesystem:/*"
  ],
  "content_security_policy": "script-src 'self' https://www.youtube.com https://apis.google.com; object-src 'self'; connect-src http: https: data: blob: wss: file:",
  "omnibox": {
    "keyword": "m"
  },
  "options_ui": {
    "page": "./options.html#/settings",
    "open_in_tab": true
  },
  "manifest_version": 2
}