Examine source code of What The HEIC

{
  "manifest_version": 2,
  "name": "What The HEIC",
  "version": "0.1.0",
  "description": "Adds HEIC/HEIF image support to your browser via WebAssembly decoding. No native helpers required.",
  "browser_specific_settings": {
    "gecko": {
      "id": "what-the-heic@j-wass",
      "strict_min_version": "91.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "<all_urls>",
    "storage"
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    },
    "default_popup": "shared/popup.html",
    "default_title": "What The HEIC"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-script-loader.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "wasm/heic_decode.wasm",
    "shared/*.js"
  ],
  "content_security_policy": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'"
}