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The Conversion Optimization Certification

By Jörg Dennis Krüger, The Conversion Hacker®. Work through the courses, pass the final exam and get a PDF certificate with a public verify ID. Free, no follow-up costs.

20+ yearsHands-on CRO since 2006
EUR 210M+Added revenue from real A/B tests
EUR 0No paid certificate afterwards

How the certification works

Three steps, no fine print.
  1. Pick a course and work through the modules. Register for free and pick a course. Modules are short: audio, slides and one worksheet per module.
  2. Pass the final exam. Every course ends with a final exam. It checks whether you can apply the content, not whether you can recite vocabulary.
  3. Get your certificate with verify ID. After passing you receive your PDF certificate with a public verify ID. Any employer can check it via the verify URL.

One certificate per course, three levels

The Academy does not invent title levels. Every course ends with exactly one certificate, and the level comes from course size: up to 5 modules means fundamentals, 6 to 8 means specialist, 9 and more means expert. Examples from the catalog:

What the certificate is, and what it is not

Frankly: the certificate is a practice certificate from Jörg Dennis Krüger, not a state-recognized qualification. It stands for reviewed course content from 20 years of hands-on CRO, and every certificate is publicly verifiable. If you need a subsidized formal qualification, an IHK or AZAV course is the right path. If you want to learn CRO and prove it, you are in the right place. Read more in the honest analysis: is a certification worth it?

Frequently asked questions about the certification

Yes. The courses start from zero and walk you through method, tools and examples from real shops step by step. If you already have experience, you simply move through the modules faster.
You get a structured learning path instead of random blog posts, and in interviews you have verifiable proof: a public verify URL any employer can open. It does not replace project experience, but it shows you did the work.
Honest answer: it is a practice certificate from Jörg Dennis Krüger, not a state-recognized qualification like an IHK certificate. The content comes from more than 20 years of hands-on CRO with over EUR 210M in added revenue from real A/B tests. If you need a subsidized formal qualification, an IHK or AZAV course is the right path.
Work through all modules of a course and pass the final exam. Right after that you receive your PDF certificate with a public verify ID, ready for LinkedIn, your application or your records.
Yes. Registration, courses, final exam and certificate cost nothing. There is no paid certificate afterwards and no surcharge for the exam. Many providers do it the other way round: free course, paid certificate. Not here.
Yes. Every certificate has a public verify URL on academy.jdk.de showing issuer, course, level and issue date. Your employer needs no account for that.
The Academy exists in German and English, and the certificate itself is language neutral with its verify ID. Integration with Europass and the European Digital Credentials format is planned. If you need an international credential today, take the English version of the course.
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