16+ years conversion experience
2,000+ A/B tests with 300+ clients
Multiple best speaker awards
at renowned marketing conferences
Built Europe's 2nd biggest CRO agency
Now: Sharing knowledge independently
Conversion optimization since 2004

Clients & testimonials

2,000+ A/B tests & projects with more than 300 companies.

 Here's what they say about working with me.

Sixt Car Rentals

"100% knowledge.

0% bullshit."
"Working with Nils is great. His workshops for Sixt's international SEO team were on point. He thoroughly conveyed the fields of CRO, UX & UI in an easy-to-understand way. Charming and always practice-related.

You can really notice his multi-year experience – he simply knows what he is talking about. 100% knowledge. 0% bullshit."
Thorsten Becker, Sixt

"Super helpful!"

"After seeing Nils speak at an event in Berlin, we really wanted to learn from him.

He came to our office and taught us the principles of conversion optimization, and offered great new insights.

Super helpful!"
Machiel Schepers, Airbnb

"Nils is a unicorn

among landing page experts"
"Nils is a unicorn among landing page experts in Germany. This is due to his comprehensive experience in landing page optimisation as well as his refreshing naturalness when sharing his knowledge. He never lacks informative insights.

At Unbounce, we had the honour of working with Nils multiple times. The audience's feedback was always outstanding. We can unreservedly recommend him as a speaker and partner."
Ben Harmanus, Unbounce (now: HubSpot)

I help great brands improve and strengthen their position in the digital field.

 Mid-sized companies, market leaders, Fortune 500.

OTTO Germany

"A comprehensive overview

of the most important methods and tools"
"Despite the very heterogeneous audience, Nils was able to give us a comprehensive overview of the most important methods and tools of conversion optimisation.

The examples shown, and the live site clinic on our website revealed specific to-dos.

His humorous presentation has absolutely contributed to the fact that the content stays in our heads. Thank you Nils for your shared expertise."
Jan Wölk, OTTO

"Brilliant insights in a nutshell."

"Really brilliant insights in a nutshell. Delivered in an easily understandable way.

You gave us valuable advice that we can implement directly. Thank you for that!"
Michael Wolf, 11880.com


& congenial."
"Nils has a very easy and personable way of explaining complex things. We learned a lot in our session, and had lively discussions afterwards.

Nils put in a lot of effort and really took his time for us. You can tell that he is passionate about his topic.

I can definitely recommend Nils, whether as a speaker or as a consultant.

Competent & congenial."
Sascha Blank, Holidayguru
"Pure inspiration"
"Working with Nils was pure inspiration for us.

He conveys his extensive knowledge in an equally structured and very charming way. His approaches are extremely precise and get right to the point.

We are sustainably amazed."
Juergen Lange, Liebelei Likoere
"Helped us to improve our website significantly"
"Nils succeeds in identifying outstanding potentials for improvement within very short time. And he communicates these in a simple, understandable, and comprehensible manner.

He brings things precisely to the point, and thus helped us to improve our website significantly."
Bennett Asal, univativ
"His tips are worth gold"
"With his efficient analysis, Nils was able to show us the UX barriers in our sales pages.

With his constructive suggestions we were able to increase our conversion rate, and reduce the bounce rate to a minimum.

His tips are worth gold for every marketer. An absolute recommendation."
Chris Franke, Seatris
My prestigious clients from A to Z

A selection of renowned companies I work(ed) with

  • Airbnb
  • Audible (Amazon)
  • Audi
  • A&O Hotels
  • Beuth Verlag
    Press Media
  • Doodle
  • ebay
  • Expedia
  • Facebook Germany
    Social Media
  • Ford
  • Galeria Kaufhof
  • Google & FH Salzburg
  • Hartmann Tresore
  • H-Hotels.com
  • Home24
    Home & Living
  • IHK Germany
  • Immobilien Scout 24
    Real Estate
  • Just Spices
  • Mister Finance
    Finance & Insurance
  • Mister Spex
  • MyHammer
    Home & Living
  • OMR Online Marketing Rockstars
  • OTTO Group
  • PayPal
  • sage
  • Sixt
    Car Rentals
  • Sparwelt
  • Stylebook
    Fashion Blogs
  • Telekom Germany
  • UBS
  • VDI Verband Deutscher Ingenieure
  • Wintec Autoglas
    Car Repairs
  • Zalando
Work with me

Let's make a measurable impact on your conversion rate, sales, and leads

I help you win at conversion optimisation with highly valuable advice focused on conversion, UX, copywriting, usability, and psychology.
Skip trial & error

Landing Page
Concept & Wireframe

Your fast track to a higher ROI.
I create individual wireframes for high-converting landing pages.
Actionable tips


Your website is leaking money.
Let’s fix that together. Get my actionable tips for your pages and funnels.
Empower your team

Consulting & Training

Your in-house team on steroids.
I empower your team with high-end conversion knowledge on a monthly, ongoing basis.

Conversion Masterclass

by Nils Kattau
200+ video lessons
to make you PRO at conversion optimization.
150+ quiz questions
to test your knowledge and get your Conversion Certificate.
190+ students
are waiting for you in our exclusive CRO Masterclass community.