Sheets To JSON

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Sheets To JSON",
  "action": {},
  "manifest_version": 3,
  "version": "0.3",
  "description": "Download JSON from Google Sheets",
  "content_scripts": [
    {
      "matches": [
        "https://docs.google.com/spreadsheets/d/*"
      ],
      "js": [
        "getJSON.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ]
}