How BOXIO increased its conversion rate by 9.65% with Speed Kit
Published on October 22, 2026
- Outdoor & Camping
- Europe
- Shopify
+9.65%
Relative uplift in user conversion rate during the A/B test
459 ms
Faster median Largest Contentful Paint on the pages Speed Kit accelerates, 43% faster
82%
Of next pages are preloaded before the visitor clicks
“We don't rely on promises – every optimization has to prove itself in a clean A/B test with our own data. The setup was quick, our customer support saw no issues, and after an extended test we agreed on a full rollout.”
Introduction
BOXIO makes camping and vanlife equipment in the Eurobox format that works without any external power source, running water connection or chemicals, from a separating toilet and a washbasin to a gas cooker and a passive cool box. The brand belongs to Duschkraft GmbH in Rostock, which three founders started in a student flat-share, and more than 90,000 campers use its products. BOXIO sells through its own Shopify stores across Europe and worldwide. The A/B test ran on boxio.de. With Speed Kit, the accelerated pages now load 43% faster, and during the A/B test the user conversion rate rose by 9.65% compared to the control group.
Challenge
BOXIO runs its stores on Shopify, with country domains that share the same structure and content, and was looking for a solution that works without changes to the existing shop code. The shop team runs its own A/B tests and puts a particular focus on the mobile conversion rate. BOXIO makes investment decisions based on data, so a speed-up had to prove itself in a clean test against a control group before the team would commit to it for the long term.
Solution
Speed Kit was set up on top of the existing Shopify store. It predicts which page a visitor is likely to open next and prepares it in the background, so the next product or category page is often ready before the click. For the A/B test, half of the visitors on boxio.de got Speed Kit and the other half formed the control group, and BOXIO received the raw order data to run its own evaluation.
Results
Business Impact — A/B Test: During the A/B test, the Speed Kit group reached a 9.65% higher user conversion rate than the control group and placed 10.27% more orders.
Performance Improvements — Largest Contentful Paint (LCP): On the pages Speed Kit accelerates, the main content now reaches the visitor 459 ms or 43% faster. Category pages gained 56%, product pages 48% and the homepage 14%. Time to First Byte fell by 75% and First Contentful Paint by 46%.
Predictive Preloading Coverage: Speed Kit cached 82% of next pages before the visitors opened them, and 36% of users got a page that had been prerendered in the background.
Conclusion
With Speed Kit, the accelerated pages on boxio.de load 43% faster, and during the A/B test the Speed Kit group converted 9.65% better than the control group. After the test, BOXIO rolled Speed Kit out to all visitors on boxio.de, and its other country stores are next.
