Examine source code of DNSSEC/DANE Validator

{
  "manifest_version": 2,
  "name": "DNSSEC/DANE Validator",
  "version": "0.0.8",
  "description": "Validate DNSSEC & DANE using DoH",
  "developer": {
    "name": "defkev"
  },
  "applications": {
    "gecko": {
      "id": "dnssec-dane-validator@defkev",
      "strict_min_version": "57.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "page_action": {
    "browser_style": true
  },
  "permissions": [
    "<all_urls>",
    "notifications",
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking"
  ],
  "web_accessible_resources": [
    "blocked.html"
  ]
}