Know the second your checkout stops taking money
Checkout is where intent becomes revenue, and it's the easiest page to silently break. A dead pay button, a card field that won't render, a price that no longer matches the cart - none of it throws an error. CopyMosaic loads your checkout like a real buyer every day and emails you the day it breaks.
Monitoring is $9/mo for founders, locked forever — up to 5 money pages, billed monthly, cancel anytime.
By the time someone reaches checkout, you've already paid to get them there. A checkout that loads but doesn't work isn't a small bug - it's your most expensive traffic hitting a wall you can't see. The page still renders, the button still looks clickable, and nothing in your logs complains. CopyMosaic loads it the way a logged-out buyer does, checks the things that actually stop a payment, and tells you the day one of them moves.
What quietly breaks on your checkout page
The pay button goes dead
'Pay now' 404s, loses its handler in a deploy, or points at a checkout that no longer exists. It still looks clickable - it just swallows the one click you needed to close the sale.
A card or address field stops rendering
A script error or embed change drops the card input, the country selector, or the address block. The buyer can't finish the form they can see, and most leave rather than email you about it.
The price stops matching the cart
The number on the product page and the number at checkout drift apart after an edit or a currency change. Buyers catch the mismatch at the worst possible moment and abandon, trust gone.
The trust strip disappears
The secure-checkout badge, the money-back line, the accepted-cards row - quietly removed in an edit. They're load-bearing right here, on the page where someone decides whether to hand over a card.
Tracking drops before the sale closes
The UTM or click ID that rode in from your ad stops reaching checkout, so sales that complete report as 'direct' and the campaign paying for itself looks dead in your analytics.
How it works
Paste your checkout URL. CopyMosaic loads it like a logged-out buyer, runs about 30 checks on what they'd actually hit, and shows you the result in seconds - free, no signup. Turn on monitoring and it re-checks the page every day and emails you the day something changes, so you hear it from us before you feel it in your numbers.
Related checks
Questions
Does it actually complete a test purchase?
No. CopyMosaic checks what a logged-out buyer sees from the outside - whether the button is alive, where it points, whether the fields render, whether the price matches. It doesn't enter card details or finish a payment, so it can't confirm the charge clears; that's behind your processor, where an external check can't reach.
My checkout is hosted by Stripe, Shopify, or Paddle. Can you still check it?
It checks the path up to the hosted checkout: that your button reaches the right link, that the redirect resolves, that nothing 404s on the way. Once a buyer is inside the processor's own pages, that's their domain, not something an outside check can see.
How often does it check?
Free scans run on demand whenever you paste a URL. Paid monitoring re-checks your checkout - and up to five pages total - every day, and emails you the day something changes.