Examine source code of FormFiller

{
  "manifest_version": 2,
  "name": "FormFiller",
  "description": "Intelligent form filling with smart field detection. Save time with context-aware data generation for any web form.",
  "version": "1.6.1",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "formfiller@soufiane.dev"
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options": {
    "options": {
      "open_in_tab": true
    }
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  },
  "browser_action": {
    "default_title": "Form Filler",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}