Examine source code of TinyIMG Shopify SEO Plus

{
  "browser_action": {
    "default_icon": "images/icon-128.png",
    "default_popup": "popup.html"
  },
  "author": "TinyIMG",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "js": [
        "js/inject.js"
      ],
      "css": [
        "css/inject.css"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_end"
    }
  ],
  "homepage_url": "https://tiny-img.com/",
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "incognito": "split",
  "manifest_version": 2,
  "name": "TinyIMG Shopify SEO Extension & Inspector",
  "description": "TinyIMG is a free multi-purpose extension designed to give users comprehensive SEO insights about any web page or Shopify store!",
  "permissions": [
    "webRequest",
    "webNavigation",
    "storage",
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "version": "3.3.8",
  "web_accessible_resources": [
    "popup.html",
    "js/inject.js",
    "css/inject.css"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{58371cf8-6889-404b-b9e0-62c653065474}"
    }
  }
}