Examine source code of FillFast

{
  "manifest_version": 3,
  "name": "FillFast — Fill Any Form in 1 Second",
  "version": "0.11.3",
  "description": "AI-powered web form autofill in one click. Multi-tab forms, smart dropdowns, realistic data. Zero setup, your data stays local.",
  "browser_specific_settings": {
    "gecko": {
      "id": "fillfast@fillfast.app",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_title": "FillFast — fill any form",
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "lib/config.js",
        "lib/faker.js",
        "content/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "storage",
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "commands": {
    "fill-active-tab": {
      "suggested_key": {
        "default": "Alt+Shift+F",
        "mac": "Alt+Shift+F"
      },
      "description": "FillFast: fill the active tab"
    },
    "analyze-active-tab": {
      "suggested_key": {
        "default": "Alt+Shift+A",
        "mac": "Alt+Shift+A"
      },
      "description": "FillFast: analyze the active tab's form"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}