Razor-sharp know-how
We'll save you millions of dollars worth of mistakes in a few hours. Catch us in lectures, talks, or an e-mail course. It's a lot. We don't want you to get lost in our know-how. So we've given it order.
The book Web ostrý jako břitva (The Razor-Sharp Web) is 10 years old.
Celebrate it with us!
Become our subscriber. We'll send you an electronic version of the first Czech book on web design as a gift. Along with it, you'll receive the latest insights from our practice, including the use of AI, digital project management, and company leadership.
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Let's meet in person
How big is your budget for bad ideas?
Having a bad idea isn't the problem. The problem is not killing it fast enough. And losing money on it.Design sprints get to the point. Is there demand for this? Does anyone understand it? Will they pay for it?AI changes everything here. You'll start validating ideas on steroids. Even with a small team, in a fraction of the time. Whether you're innovating a product or rethinking a loyalty program from the ground up.Using real case studies, Marek will show at Conference X4B how sprints helped find the right answers. How they harnessed the power of AI. And how they killed the ideas that were going nowhere.
Sharpen your know-how with our articles
Here's what we've written recently. Don't want to miss out on more articles? You can receive them regularly in your email inbox.
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Seven Comfortable Truths about AI
You chase trends, collect prompts, but results don't come. On May 25, Marek dismantles 7 comfortable AI myths holding you back. Free webinar.
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This year we are hiring only agents
House of Řezáč hasn't hired a human in 18 months — they hire AI agents. Jan shares how the whole team moved to Claude Code and what actually works when onboarding AI.
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Ignore AI Predictions
AI hype haunts you, but it will bring nothing. Cedric Chin advises: ignore predictions, follow specific field reports from practice, and experiment on your own problems.
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The web is dead. Long live the web in 2026
AI is changing the rules of the game: the web is now a source of truth for machines and a place for conversions. Key investments: customer research, idea validation and stakeholder management.
Do you need a key to our topics?
Is there a lot and you don't know where to start? Start here. We've selected 9 topics from our content that we consider top.
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Discover key concepts in a clear glossary.
Follow us on the front line
From House of Řezáč, you will most often meet Jan, Pavel, and Marek. On their LinkedIn profiles, you won't miss any new topics or opportunities to meet in person. Jan regularly publishes articles in the LinkedIn newsletter #jakobřitva – growth, marketing, digital projects.
Leads and develops the entire team of designers at House of Řezáč. He has over 12 years of experience in design, marketing, strategy, and business.