Flash Checkout
The fastest, most reliable checkout experience for India.
flash-checkout::Dashboard_View
System Status: Operational
Designed for Developers,
Built for Scale.
Integrate our robust APIs in minutes, not months. Detailed documentation, SDKs for all major languages, and a thoroughly tested sandbox environment ensure a smooth developer experience.
Low Latency
Optimized for speed with <100ms response times.
Bank-Grade Security
AES-256 encryption and PCI-DSS compliance.
99.99% Uptime
Redundant infrastructure ensuring high availability.
// Initialize Flash Checkout
const checkout = new UnPayCheckout({
key: "YOUR_API_KEY",
order_id: "order_12345"
});
checkout.on("payment.success", (response) => {
console.log(response.payment_id);
// Redirect to success page
});
checkout.open();Engineered for Excellence
One-click payments, multi-PG orchestration, and bank-grade security built for scale.
One-Click Payment
Minimal steps from intent to payment. Optimized for repeat users with reduced friction.
Multi-PG Orchestration
Intelligent routing based on success rate, cost, or availability with automatic failover.
All Modes in One Flow
UPI (Intent, Collect), Cards, Net Banking, Wallets & BNPL without redirection chaos.
High-Speed Processing
Low-latency checkout flow built for peak traffic and flash-sale loads.
Bank-Grade Security
PCI-DSS aligned, tokenization for sensitive data, and encrypted handling.
Smart Retry Handling
Auto-retry on transient failures with user-friendly error messages.
Fully Customizable UI
Brand colors, logo, fonts. White-label ready and mobile-first responsive design.
Real-Time Callbacks
Instant payment status updates and reliable webhooks for all events.
How It Works
Seamless integration into your existing stack.
Initiate
User clicks Pay Now.
Select Mode
Choose UPI, Card, or BNPL.
Authenticate
Secure 2FA or App Switch.
Success
Instant confirmation.
Frequently Asked Questions
Does it support international cards?
Yes, Flash Checkout supports international cards with dynamic currency conversion.
Can I customize the look and feel?
Absolutely, full white-label customization is available via the dashboard.
How does the failover work?
If a primary gateway fails, we automatically route the transaction to the next best performing gateway instantly.
Ready to transform finance?
Join thousands of fintechs and enterprises building the future of financial services with UnPay.