Offline-first · zero server

Local Sandbox

A developer scratchpad that runs entirely in your browser. Format JSON, juggle Base64, and compile Markdown - all computed on-device and saved to local storage, so your work survives a refresh without a single network call.

Saved to IndexedDB + local storageWorks fully offline

Input

valid JSON

185 bytes13 nodes

Output

{
  "service": "local-sandbox",
  "online": false,
  "persistence": [
    "indexeddb",
    "localstorage"
  ],
  "tools": {
    "count": 3,
    "names": [
      "json",
      "base64",
      "markdown"
    ]
  },
  "version": 1
}