Free nostr tools.

Conversion and decoding runs entirely in your browser. Lookup tools connect directly from your browser to the service you query. nostr.ph is never in the loop.

Never enter your private key (nsec) into any website. These tools work with public keys only.

npub / Hex Converter

Convert between npub and hex pubkey formats. All conversion runs in your browser.

npub → hex

hex → npub

NIP-05 Lookup

Resolve any nostr address (name@domain.com) to its pubkey and npub. Your browser fetches directly from the queried domain.

Some domains block browser requests (CORS). If lookup fails for a valid address, try a nostr client instead.

nostr address

Relay List Lookup

Fetch any user’s relay list (NIP-65, kind 10002) by npub or hex pubkey. Your browser opens a direct WebSocket connection to the relay you specify.

The relay will see your IP address. nostr.ph does not proxy or log this request.

npub or hex pubkey relay

Note / Event Decoder

Decode a note ID between formats. Accepts note1, nevent1, or a 64-char hex event ID. All decoding runs in your browser.

note1, nevent1, or hex event ID

Client Link Generator

Paste an npub or hex pubkey and get direct links to open that profile in popular nostr clients.

npub or hex pubkey