Payment QR Generator
Create a scannable SVG QR code for a validated payment URI. Supports Bitcoin BIP21, Litecoin, Dogecoin, Ethereum EIP-681, Lightning invoices and generic text payloads.
About this tool
Payment QR codes are just payment URIs encoded as a QR image. This tool builds the URI for you, validates the destination where validation is possible, and renders a crisp SVG QR code that can be scanned from a screen or printed.
It supports Bitcoin-style BIP21 URIs (bitcoin:address?amount=&label=&message=), Litecoin, Dogecoin, Ethereum EIP-681, Lightning invoices, and a plain-text mode for any payload you want to encode. Everything runs locally in WebAssembly; the address or invoice never leaves your browser.
Worked example
A Bitcoin request with:
- address
bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4 - amount
0.025 - label
Coffee Bar - message
Invoice 2026-114
builds this payment URI before encoding it in the SVG QR code:
bitcoin:bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4?amount=0.025&label=Coffee%20Bar&message=Invoice%202026-114
The QR itself includes that URI in the SVG <title> for accessibility, and the Print URI under the code option also draws readable wrapped text below the code.
Options
| Option | What it does |
|---|---|
| Payment scheme | Choose Bitcoin, Litecoin, Dogecoin, Ethereum, Lightning, or plain text. |
| Amount | Optional coin amount. BTC/LTC/DOGE allow up to 8 decimal places; ETH allows up to 18 and is converted to exact wei. Lightning invoices carry their own amount. |
| Label / message | Optional BIP21 fields for Bitcoin-style schemes. They are UTF-8 percent-encoded with spaces as %20, never +. |
| Error correction | L is smallest, M is a balanced default, Q/H are more robust for print but make the code denser. |
| Size and colors | Control the SVG viewport and QR colors. Keep strong contrast; low-contrast decorative codes often fail to scan. |
Limits and edge cases
- Validation catches typos, not intent. Base58Check and Bech32/Bech32m checksums catch malformed Bitcoin-style addresses, and Ethereum addresses must be 20-byte hex. The tool cannot prove the address belongs to the person you meant to pay.
- No payment monitoring. A QR code cannot tell you whether funds arrived. Verify payments in your wallet, node, or block explorer.
- Amounts are requests. Wallets usually let the payer edit the amount before sending.
- Lightning invoices are already complete payloads. The amount, memo and expiry live inside the BOLT11 invoice, so
amount,labelandmessageare rejected forscheme=lightning. - No hosted dynamic QR. The output is a static SVG. Dynamic redirects, accounts, analytics and plan-gated downloads require a backend and are outside this local tool.
FAQ
What is BIP21?
BIP21 is the URI format many Bitcoin wallets understand: bitcoin:address plus optional query parameters like amount, label and message. This tool uses the same grammar for Bitcoin, Litecoin and Dogecoin payment requests.
Can I use this for Ethereum?
Yes. Choose Ethereum EIP-681 and paste a 0x address. If you enter an amount, the tool converts decimal ETH into exact wei for the value= parameter without floating-point rounding.
Does the QR prove the address is safe?
No. It only proves the payload is well-formed enough to encode. A checksum catches many typing mistakes, but you still need to verify the destination with your counterparty before displaying or printing the QR.
Which error-correction level should I pick?
Use M for normal screen use. Use Q or H for printed codes, stickers, receipts or anything that may be smudged. Higher recovery levels make the QR denser, so keep the printed size large enough to scan.
Can I make a transparent or branded QR?
You can set the background color to transparent and choose foreground/background colors. Keep enough contrast for scanners. Logo overlays and styled template galleries need a second image input and are intentionally left to decorative QR tools.
Developer & Automation Access
Run it from the terminal
Same engine as this page, headless — via the gizza CLI:
gizza tool payment-qr "bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4"New to the CLI? Get gizza →
Open it by URL
Pre-fill and auto-run this tool with query parameters — the names match the API/CLI:
https://gizza.ai/tools/payment-qr/?address=bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4&scheme=bitcoin&amount=0.025&label=Coffee%20Bar&message=Invoice%202026-114&error_correction=M&size=512&foreground=%23000000&background=%23ffffff&show_uri=trueMachine-readable descriptor: tool.json — title + parameters JSON Schema for agents.