// 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.

JWT Generator

Security · tool

JWT Generator

Sign HS256/384/512 JSON Web Tokens with your own claims and secret.

Signed locally with the Web Crypto API — the secret never leaves your browser.

// 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.

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  • 139sharp tools
  • free forever