HubTools

Bitcoin QR Code Generator

BIP21-compliant Bitcoin QR with optional amount, label, and message.

What is a BIP21 Bitcoin QR code?

BIP21 is the Bitcoin community standard for payment-request URIs — it's a bitcoin: URL that encodes a receiving address plus optional amount, label, and message. Every major wallet (BlueWallet, Phoenix, Sparrow, Trezor Suite, Ledger Live, Coinbase Wallet) recognizes BIP21 QR codes and pre-fills the send screen with the encoded values. Use it for invoices, donation pages, or any scenario where you want recipients to skip typing your address by hand. Encoding happens 100% client-side.
Quick start templates
Appearance
Body & eyes
Body pattern
Eye frame
Eye ball
Colors
Body
#F97316
#EC4899
Angle (90°)
Eye frame
#F97316
Eye ball
#EC4899
Background
#FFFFFF
Logo

Drop a logo, or click to browse

PNG, JPEG, SVG, WebP · up to 2 MB

Frame
Frame style
Advanced
Size
Error correction
Quiet zone (4 modules)
Preview
Enter content to generate a QR code
Download
Format
PNG and WebP support transparency. SVG scales to any size without quality loss. JPEG is the smallest file but has no transparency.

About BIP21

BIP21 is the Bitcoin Improvement Proposal that defines the bitcoin: URI scheme.
  • Format: bitcoin:address?amount=0.01&label=Coffee&message=Thanks
  • Amount is in BTC (decimal), not satoshis
  • Label and message are URL-encoded UTF-8
  • All parameters except the address are optional

Frequently asked questions

Is the amount required?
No — leave it blank for a 'send any amount' QR (good for donations, tip jars). Set it for invoices where you want the recipient to send a specific amount. Amount is in BTC (e.g. 0.01 = 0.01 BTC).

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