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// a sandbox of 139 sharp tools

Every little generator
you keep googling for.

QR, barcodes, bcrypt hashes for PHP, UUIDs, JWT decoders, color palettes — fast, local, no signup. Search the sandbox and start.

JSON Validator

Developer · tool

JSON Validator

Validate JSON with line and column error reporting plus structure stats.

✓ Valid JSON

Root type

object

Keys

3

Nodes

6

Max depth

3

// about the sandbox

The small utilities you need,
without the ad-walls.

Every generator runs entirely in your browser. Your inputs never leave the page — no servers, no logging, no tracking pixels. Open the tool, get the thing, close the tab.

  • 100%client-side
  • 0accounts
  • 139sharp tools
  • ∞free forever