Key conversion, event decoding, and protocol utilities. All client-side — nothing leaves your browser.
Convert between hex and NIP-19 formats: npub, nsec, note, nprofile, nevent
Paste a Nostr event JSON to inspect fields and cryptographically verify the event ID (SHA-256) and Schnorr signature (BIP-340) — all client-side.
Fetch an event from relays by ID (hex or note1...).
Convert between Unix timestamps and human-readable dates.
Build a REQ filter visually. Outputs valid Nostr protocol JSON.
Decode a bolt11 Lightning invoice — payment hash, amount, expiry, node pubkey, description. Client-side only, nothing sent anywhere.
Send a live DVM job request to relays and watch for responses. Requires a NIP-07 browser extension (Alby, nos2x, etc.) to sign — or generates an ephemeral key automatically.
Common Nostr event kinds and their NIP specifications.