Examine source code of Link your File

{
  "name": "Link your File",
  "version": "1.0.2",
  "manifest_version": 2,
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "tabs",
    "storage",
    "https://*.linkyourfile.com/link*"
  ],
  "browser_action": {
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "icon/icon_16.png",
    "32": "icon/icon_32.png",
    "48": "icon/icon_48.png",
    "128": "icon/icon_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "addon@linkyourfile.com",
      "strict_min_version": "54.0"
    }
  }
}