Examine source code of DeviantArt Filter

{
  "name": "__MSG_ExtensionName__",
  "description": "__MSG_ExtensionDescription__",
  "version": "6.2.2",
  "short_name": "__MSG_ExtensionShortName__",
  "manifest_version": 2,
  "default_locale": "en",
  "homepage_url": "https://rthaut.github.io/deviantART-Filter",
  "icons": {
    "16": "images/icon-16.png",
    "19": "images/icon-19.png",
    "24": "images/icon-24.png",
    "32": "images/icon-32.png",
    "38": "images/icon-38.png",
    "48": "images/icon-48.png",
    "64": "images/icon-64.png",
    "96": "images/icon-96.png",
    "128": "images/icon-128.png"
  },
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "page_action": {
    "default_icon": {
      "16": "images/icon-16.png",
      "19": "images/icon-19.png",
      "24": "images/icon-24.png",
      "32": "images/icon-32.png",
      "38": "images/icon-38.png",
      "48": "images/icon-48.png",
      "64": "images/icon-64.png",
      "96": "images/icon-96.png",
      "128": "images/icon-128.png"
    },
    "default_title": "__MSG_BrowserActionTitle__"
  },
  "content_scripts": [
    {
      "all_frames": false,
      "css": [
        "styles/content.css"
      ],
      "js": [
        "scripts/content.js"
      ],
      "matches": [
        "*://*.deviantart.com/*"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "*://*.deviantart.com/*",
    "activeTab",
    "contextMenus",
    "notifications",
    "storage",
    "tabs"
  ],
  "web_accessible_resources": [
    "pages/create-filters.html"
  ],
  "applications": {
    "gecko": {
      "id": "{a2ce7c11-e47d-42cf-b6db-ede36265cf6c}",
      "strict_min_version": "62.0"
    }
  }
}