Examine source code of No Reddit Image Viewer

{
  "name": "No Reddit Image Viewer",
  "version": "1.0.0",
  "manifest_version": 2,
  "description": "Disables Reddit's image viewer and uses the browser one instead",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "48": "icon_48.png",
    "128": "icon_128.png"
  },
  "incognito": "spanning",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://i.redd.it/*",
    "*://preview.redd.it/*",
    "*://external-preview.redd.it/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b64d91f6-bf0f-48fd-805c-1f8b9ff5cdb7}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}