How to Run Split Tests in Sparkforge Funnels

By Sparkforge Support Team ·Last reviewed May 3, 2026

Split testing in Sparkforge funnels compares variations of a page at a chosen traffic split. Add a domain to the funnel, create a variation on any step, set the slider, and Sparkforge serves Control or Variation by browser cookie until you pick a winner.

Split testing (A/B testing) compares two or more versions of a funnel page to see which one converts better. Sparkforge runs the test natively — no third-party tags, no extra code. Available across all Sparkforge plans.

Before you start

Split testing requires a domain on the funnel. Add one under Sites > Funnels > Settings first.

Create a split test

  1. Go to Sites > Funnels (or Websites) and open the funnel.
  2. Pick the funnel step you want to test.
  3. Click Create Variation.
  4. Move the slider to set how much traffic goes to Control vs Variation.
  5. Click Start Split Test and confirm.

Each variation gets its own dedicated URL. Edit those URLs from the gear icon under each page.

How traffic is split

Visitors hit the main funnel URL and Sparkforge routes them to Control or Variation per the slider. The split is sticky per browser via cookie — the same visitor sees the same version on return visits.

To preview the other variation yourself, open the URL in an incognito window or a different browser.

Make the variation meaningfully different

If Control and Variation are nearly identical, results won't tell you anything. Change a real element — headline, hero image, CTA copy, layout. And don't edit the Control while the test is live, or you'll dirty the data.

Read the results

Click the Stats tab on the page and expand the funnel step you're testing. You'll see traffic, conversions, and conversion rate per variation in real time.

Where split tests pay off

Online course landing pages

Test two headlines ("Learn Spanish in 30 Days" vs a benefit-led version) and two hero images (smiling student vs course screenshot). Run with the higher-converting combination.

Webinar registration

Test SEO-focused headlines, form layouts, or hero imagery. Pick the version that drives more sign-ups.

E-commerce checkout

Single-page vs multi-step checkout. Red vs blue button. Trust badges on or off. Watch cart-completion rate, not just clicks.

Lead magnets

Two cover designs, two opt-in form lengths. The shorter form usually wins, but the better-designed cover sometimes flips the result.

FAQ-level gotchas

All traffic goes to Control, none to Variation

Almost always a domain mismatch. The domain advertised on your ad must match the funnel step's domain. If your root domain serves a different default page, route it to the split-tested page instead.

Stats don't match the configured ratio

Someone's linking directly to the Control or Variation URL from another page or ad, bypassing the split logic. Find and fix the rogue link.

Google or Facebook Ads block path redirects

Their policies sometimes flag redirect logic. Workaround: run the split test on the second step of the funnel, not the first. Send ad traffic to a clean step-1 page, then split on step 2 once visitors are inside.

Frequently Asked Questions

Do I need a custom domain to run a split test?
Yes. Split testing only activates once a domain is attached to the funnel.
How does Sparkforge decide which version each visitor sees?
By browser cookie. Once a visitor lands on a variation, the cookie keeps them on that version for return visits. Use incognito to see the other side.
Can I edit the Control page while a split test is running?
Don't. Editing Control mid-test contaminates the data. Pause the test, edit, then start a new one.
Why is all my traffic going to Control?
The most common cause is a domain mismatch — your ad's destination domain doesn't match the funnel step's domain. Make the funnel step the default page on the advertised domain.
How do I run a split test if Google or Facebook Ads block path redirects?
Run the test on funnel step 2 instead of step 1. Ads land on a clean step-1 page, then visitors enter the split test on step 2.

Was this article helpful?