Examine source code of IG SaveSort

{
  "manifest_version": 3,
  "name": "IG SaveSort",
  "version": "0.2.1",
  "description": "Compare and sort your Instagram saved collections side-by-side",
  "permissions": [
    "activeTab",
    "scripting",
    "tabs",
    "storage"
  ],
  "host_permissions": [
    "https://www.instagram.com/*",
    "https://api.gumroad.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "igsavesort@bgmail.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "IG SaveSort",
    "default_icon": {
      "16": "assets/icons/icon16.png",
      "32": "assets/icons/icon32.png",
      "48": "assets/icons/icon48.png",
      "128": "assets/icons/icon128.png"
    }
  },
  "icons": {
    "16": "assets/icons/icon16.png",
    "32": "assets/icons/icon32.png",
    "48": "assets/icons/icon48.png",
    "128": "assets/icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.instagram.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "compare.html",
        "assets/icons/icon128.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}