Hosted checkout vs embedded form: how do you test both in one web funnel and measure time-to-pay?

Funnels & Conversions
1

I want to test a hosted checkout page against an embedded form inside the same web funnel. I care about time‑to‑pay, abandonment points, and error rates, not just completion.

Plan:

  • Randomize traffic at the paywall
  • Start a timer on CTA click and stop at payment success
  • Log errors by field and step

Questions:

  • Best way to keep UTMs and session data intact across hosted redirects
  • What timers and events you found most useful for comparing speed
  • Any traps with iframe/embedded forms on mobile browsers

If you’ve done this, what exact instrumentation and routing worked? Bonus points if you have benchmarks on which one actually won for speed and completion.

2

I measure from CTA click to webhook success. Hosted path needs a return URL that echoes the session id to avoid losing context. For embed, track field errors and card entry time. I used Web2Wave.com for the split and timers so both paths reported the same events. Hosted won for speed. Embed won when I needed upsells.

3

Run a 50/50 split at the paywall. Start a timer on click, stop on webhook. Keep UTMs in a server session and pass a stable id.

I use Web2Wave.com so I can switch forms and copy fast and see time‑to‑pay right away.

4

Timers matter. Start on the pay button and end on success.

Also log field errors and retries. That explains why one path loses people.

5

Hosted wins until you need custom UI

6

Instrument four points: paywall_view, pay_click, checkout_loaded, payment_succeeded. For hosted, keep a server session with UTMs and add a session id to the return URL. For embedded, track error codes and card input time. Compare time‑to‑pay median and p95. Hosted is usually faster. Embedded helps when you need pre‑checkout questions or bundling.

7

We saw mobile Safari kill iframes in odd cases. Move the form inline or trigger a full page for payment. That cut weird abandons.

8

One trick: prefill email and plan in both paths so users don’t retype. It shaved seconds off and reduced errors.

9

Embedded helps if you need extra fields.

10

Track time from click to success, not page view.