Examine source code of Fast - Autofill

{
  "manifest_version": 2,
  "name": "Fast Autofill",
  "description": "Optimize your productivity with Fast Autofill",
  "version": "1.1.0",
  "short_name": "Fast Autofill",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "support@dreez.dev",
      "strict_min_version": "126.0"
    }
  },
  "author": "contacto@dreez.dev",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "_execute_browser_action": {},
    "stop-autofill": {
      "suggested_key": {
        "default": "Ctrl+Alt+S"
      },
      "description": "Stop Auto-fill "
    },
    "start-autofill": {
      "suggested_key": {
        "default": "Ctrl+Alt+A"
      },
      "description": "Start Auto-fill "
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  },
  "permissions": [
    "<all_urls>",
    "contextMenus",
    "storage",
    "unlimitedStorage",
    "activeTab",
    "tabs",
    "scripting",
    "notifications"
  ],
  "browser_action": {
    "default_title": "Fast Autofill by Dreez",
    "default_popup": "popup.html"
  }
}