Joerg Dennis Krueger, Founder of JDKRUEGER&CO

More revenue from your shop.
Or you pay nothing.

The Conversion Operating System for e-commerce. We test, measure and scale — you pay only 10% of provable uplift. Zero setup. Zero risk.

Book a Call How it works
210M+ €
Generated revenue
+34%
Avg. conversion uplift
3–5 days
To first live test
0 €
Setup cost
Gold Stevie Award
Gold Stevie AwardMultiple Winner
Top Expert 2026 Erfolg Magazin
Top Expert 2026Erfolg Magazin
German Web Awards Winner 2021 + 2022
German Web AwardsWinner 2021 + 2022

The average shop leaves 30% of revenue on the table.

70%
of shopping carts are abandoned
60%
of traffic comes from mobile — with half the conversion rate
80%
of revenue comes from 20% of customers who are never reactivated

Sources: Baymard Institute (2026), Statista Mobile Commerce Report

Only results count.

0 €
Setup cost
0 €
Monthly fees
10%
Of provable uplift
6 mo.
Then the optimisation is yours
Example calculation
Shop with 400,000 EUR revenue/month
→ 15% uplift = +60,000 EUR/month
→ Your additional revenue: +54,000 EUR/month
→ Our share: 6,000 EUR/month

The fair 6-month rule: Every successful A/B-test is billed for 6 months. After that, the optimisation is yours — forever. We start new tests. You scale your revenue.

Secure this potential for your shop
Success Stories

What we measured

CRO Case Study Geschenke24

Geschenke24

REVENUE QUADRUPLED

From 250k to 1M € through radical checkout testing.

CRO Case Study Rockstar Nails

Rockstar Nails

+20% REVENUE IN 30 DAYS

Through targeted checkout optimisation and removal of purchase barriers.

CRO Case Study Gutta

Gutta Shop

+30% MORE CONVERSIONS

Sustainable growth through systematic optimisation.

CRO Case Study Kettner

Kettner Precious Metals

+25% REVENUE

Trust optimisation for high-value products.

Joerg Dennis Krueger as Speaker
The person behind the system

Joerg Dennis Krueger

01
EntrepreneurSince 2008 in e-commerce. Founder of JDKRUEGER&CO. 210M+ EUR additional revenue for clients.
02
Author & SpeakerThe Conversion Hacker®. 1,000+ articles. Pioneer work "Conversion-Boosting with Website Testing". OMR, DMEXCO, OMKB.
03
System ArchitectThe knowledge from 18+ years and thousands of A/B-tests is built into the 9 Engines — not a single brain.
04
210M+ EURProvable. Measured. Real.
Meet Joerg Dennis Krueger

Discuss more revenue in 15 minutes.

No obligation. We tell you if your shop fits us.

Book a Call

* Cumulative additional revenue of all client projects since 2012, measured via direct A/B-test comparison (Control vs. Variant) when implementing the JDKRUEGER&CO methodology. Individual results may vary depending on shop setup, industry and season.