Does the checkout tester actually charge a card?

No. The test uses detection methods to verify the payment widget loads and renders correctly without initiating any real transaction.

Why does my checkout show 200 OK but still fail?

Your server successfully returns the HTML page (200 OK), but the Stripe or Razorpay JavaScript SDK fails to load, initialize, or render the payment widget. This happens silently — your server never knows. It is the single most common cause of revenue loss that uptime monitors miss.

Which payment providers does the checkout tester support?

Stripe, Razorpay, PayPal, Braintree, Square, Paddle, and custom payment implementations.

Free Tool — No Signup Required

Free Checkout Flow Defender

Your server returns 200 OK — but is your checkout actually working? Test Stripe, Razorpay, and custom payment flows from 3 global regions.

What We Check

1
Enter checkout URL — Enter your checkout URL and optional flow steps.
2
JavaScript monitoring — Browser opens checkout page and monitors JavaScript execution.
3
Payment widget verification — Payment widget (Stripe/Razorpay/PayPal) load verified.
4
Form renderability check — Payment form fields checked for renderability.
5
JavaScript error capture — JavaScript errors captured including silent SDK failures.
6
Network request monitoring — Network requests monitored for failed third-party calls.
7
Annotated screenshot — Screenshot captured showing pass/fail state with annotations.

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Frequently Asked Questions

Does the checkout tester actually charge a card?: No. The test uses detection methods to verify the payment widget loads and renders correctly without initiating any real transaction.
Why does my checkout show 200 OK but still fail?: Your server successfully returns the HTML page (200 OK), but the Stripe or Razorpay JavaScript SDK fails to load, initialize, or render the payment widget. This happens silently — your server never knows. It is the single most common cause of revenue loss that uptime monitors miss.
Which payment providers does the checkout tester support?: Stripe, Razorpay, PayPal, Braintree, Square, Paddle, and custom payment implementations.

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