// a sandbox of 139 sharp tools
QR, barcodes, bcrypt hashes for PHP, UUIDs, JWT decoders, color palettes — fast, local, no signup. Search the sandbox and start.
Security · tool
Generate RSA key pairs in PEM format, 2048 to 4096 bits.
Generated with the Web Crypto API in your browser — keys are never transmitted.
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// about the sandbox
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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