Examine source code of English content

{
  "manifest_version": 2,
  "name": "English content",
  "version": "1.1",
  "description": "Redirects from machine-translated or outdated localised web pages to the original English content.",
  "icons": {
    "16": "icons/EnglishContent_16.png",
    "24": "icons/EnglishContent_24.png",
    "32": "icons/EnglishContent_32.png",
    "48": "icons/EnglishContent_48.png",
    "64": "icons/EnglishContent_64.png",
    "128": "icons/EnglishContent_128.png",
    "256": "icons/EnglishContent_256.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://learn.microsoft.com/*",
    "*://docs.microsoft.com/*",
    "*://msdn.microsoft.com/*",
    "*://developer.mozilla.org/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "applications": {
    "gecko": {
      "id": "EnglishContent@webext.unclassified.software"
    }
  }
}