xmrpay.link — Monero Invoice Generator

Private. Self-hosted. No accounts. No backend. No bullshit.

Live: xmrpay.link · Tor: mc6wfe...zyd.onion

What is this?

xmrpay.link is a client-side web app that lets anyone create a professional Monero payment request in under 30 seconds — no node, no registration, no KYC, no third parties.

Enter your address, the amount, an optional description — and get a QR code, a shareable short link, and a PDF invoice. Done.

Why?

Solution	Problem
BTCPay Server	Requires own server, complex setup
NOWPayments, Globee	Custodial, KYC, fees, third-party dependency
Cake Wallet Invoice	Mobile-only, no sharing without app
MoneroPay	Backend daemon required, developer-only
Wallet QR	No amount, no description, no confirmation

The gap: There's no simple, privacy-respecting tool for freelancers, small merchants, and creators that works without setup and still allows payment confirmation.

Features

Invoice Generation

XMR address input with validation (standard, subaddress, integrated)
Amount in XMR or fiat (EUR/USD/CHF/GBP/JPY/RUB/BRL via CoinGecko, auto-detected)
Description and payment deadline (7/14/30 days or custom)
QR code with monero: URI
Shareable short URLs (/s/abc123)
PDF invoice download (with QR, amount, fiat equivalent, deadline)
i18n (EN, DE, FR, IT, ES, PT, RU) with automatic browser detection

Payment Verification (TX Proof)

Sender provides TX Hash + TX Key from their wallet
Cryptographic verification in the browser (no private keys needed)
Payment status stored permanently with the invoice
Invoice link shows "Paid" badge after verification
Standard and subaddress support

Performance & Privacy

100% Lighthouse score (Performance, Accessibility, Best Practices, SEO)
Offline-capable via Service Worker
Self-hosted fonts (no Google Fonts dependency)
Zero external tracking, no cookies
Dark mode, responsive design

Tech Stack

Frontend:    HTML + Vanilla JS (no frameworks, no build step)
Crypto:      @noble/curves Ed25519 + Keccak-256 (30KB bundle)
QR:          QRCode.js (client-side)
PDF:         jsPDF (client-side, lazy-loaded)
Hosting:     Static site + minimal PHP for short URLs and RPC proxy
Backend:     Minimal PHP (URL shortener, rates proxy, proof storage)
Data:        JSON files (no database), LocalStorage (client-side)

Project Structure

xmrpay.link/
├── index.html              # Single-page app
├── app.js / app.min.js     # Main logic (URI builder, QR, fiat rates, TX proof)
├── i18n.js / i18n.min.js   # Internationalization (DE, EN)
├── style.css               # Dark theme, responsive, WCAG AA
├── sw.js                   # Service Worker (offline support)
├── favicon.svg             # Monero coin logo
├── s.php                   # Short URL redirect
├── api/
│   ├── shorten.php         # Short URL creation
│   ├── rates.php           # CoinGecko proxy with server-side cache
│   ├── node.php            # Monero RPC proxy (4-node failover)
│   └── verify.php          # TX proof storage/retrieval
├── data/                   # JSON storage (auto-generated)
├── fonts/                  # Self-hosted Inter + JetBrains Mono
├── lib/
│   ├── qrcode.min.js       # QR code generator
│   ├── jspdf.min.js        # PDF generation (lazy-loaded)
│   └── xmr-crypto.bundle.js # Ed25519 + Keccak-256 (lazy-loaded)
├── README.md
└── LICENSE                 # MIT

Self-Hosting

git clone https://gitea.schmidt.eco/schmidt1024/xmrpay.link.git
cd xmrpay.link
# Serve with any web server that supports PHP
# No build tools, no npm, no database required
python3 -m http.server 8080  # For development (no PHP features)

Requirements for full functionality:

PHP 8.x with curl extension
Nginx or Apache (for /s/ short URL rewrites)
Writable data/ directory

Security

No private keys — TX proof uses the sender's TX key, not the receiver's view key
Client-side crypto — Ed25519 verification runs in the browser
No tracking — zero cookies, no analytics, no external scripts
RPC proxy — allowlisted methods only, rate-limited
Self-hostable — run your own instance for full control

Roadmap

Embeddable <iframe> payment widget
Invoice history (LocalStorage, CSV export)
"Pay Button" generator (HTML snippet)

License

MIT — fork it, host it, improve it.

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