Free tools
Free Nostr tools
Small, fast utilities that run in your browser. No login, no tracking, and your input never leaves the page unless a tool says so.
Key converter
Convert npub to hex and backRelay checker
Inspect any relay: NIP-11, latency, NIPsCashu redeem
Pay out an ecash token over LightningAddress checker
Verify a NIP-05 address resolves rightKey generator
Generate a keypair in your browserNote converter
Decode note1, nevent and naddrBlossom checker
Find which servers host a blobLNURL decoder
Decode LNURLs and Lightning addressesLightning decoder
Decode Lightning addresses, LNURL, BOLT11 and BOLT12