Focus on first input (keyboard shortcut)

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Focus on first input (keyboard shortcut)",
  "version": "0.1.9",
  "manifest_version": 3,
  "description": "Adds a shortcut that focuses the cursor on the first text input.",
  "icons": {
    "128": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "inj.js"
      ]
    }
  ],
  "background": {
    "service_worker": "service-worker.js"
  },
  "commands": {
    "focus-first-input": {
      "suggested_key": {
        "default": "Alt+S"
      },
      "description": "Focus on the first input on the screen"
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  }
}