Examine source code of Decentr

{
  "manifest_version": 2,
  "name": "Charon",
  "description": "Charon Browser Extension",
  "author": "Decentr",
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_action": {
    "default_icon": {
      "16": "assets/icons/16.png",
      "19": "assets/icons/19.png",
      "32": "assets/icons/32.png",
      "38": "assets/icons/38.png",
      "64": "assets/icons/64.png",
      "128": "assets/icons/128.png",
      "512": "assets/icons/512.png"
    },
    "default_popup": "charon/index.html#/portal",
    "default_title": "Charon extension"
  },
  "permissions": [
    "clipboardWrite",
    "cookies",
    "storage",
    "tabs",
    "unlimitedStorage",
    "<all_urls>",
    "webRequest"
  ],
  "content_scripts": [
    {
      "js": [
        "scripts/content-script.js"
      ],
      "matches": [
        "file://*/*",
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "scripts/background-script.js"
    ]
  },
  "web_accessible_resources": [
    "toolbar/index.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "57.0"
    }
  },
  "version": "1.3.3"
}