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Custom E-shops
Custom E-shops
We design, develop, and take care of large and mid-sized B2B and B2C e-shops with annual revenue from CZK 150M. No vendor lock-in, with a focus on performance and long-term growth.
We build e-shops with outstanding ROI
We build e-shops on data, research, and a clear strategy. We use fast, modern, and sustainable technologies that support the overall user experience.
Every decision — from category architecture to the placement of individual elements on a product detail — has a purpose. That's why our solutions will be used by your customers long-term, happily, and repeatedly.
01
We learn about your business
We get to know your motivations, needs, and expectations for the project. We understand how your processes, supplier relationships, logistics, market, and competition work.
02
We define goals and expectations
Together with you, we define goals and set the strategy for creating or updating the e-shop. We always look at the role the e-shop plays in the overall marketing mix and how it connects to other touchpoints your customers will encounter. We also set up a communication strategy between us. We have well-developed and established project management processes that keep you in control of the outcome throughout.
03
We look at your data
From Google Analytics, your CRM, or ERP system. We find out what works, what doesn't, and what we can build on.
04
We get to know your customers
For the e-shop to meet customer needs in every way and sustainably increase their satisfaction — and thereby your revenue — we need to know customers thoroughly. We always choose research methods to gather enough unbiased insights in a reasonable time.
05
We prepare and test designs
We continuously test all designs — from information architecture to final visuals — to verify they meet the defined goals and that customers can use them. Through testing and close collaboration between designers and developers, we ensure all designs are feasible without issues.
06
Custom development and integration with your systems
We develop and implement all solutions with an emphasis on speed, solution sustainability, and no vendor lock-in. We connect the e-shop to any ERP system, information system, and other tools you use.
07
Development and 24/7 support
Launching the e-shop is not the end of the work. Next comes process improvements, performance optimisation, A/B testing, and strategic continuous development. If something stops working, we address it promptly. We understand that every minute of a non-functional e-shop costs you revenue.
Less than 8 months of operating the new e-shop was enough to pay for 7,000 hours of our work
The Nazuby.cz e-shop ranked among the top 20% of highest-performing e-shops in the world before its redesign, according to metrics published by Wordstream.com. It was therefore absolutely crucial to eliminate the risks associated with replacing the old website with a new one.
+40% profit
After adjusting for natural growth and other factors, profit grew by 24% due to the redesign alone.
+27% revenue
Revenue increased by 27%. Revenue on Nazuby.cz grew by 37% and by 49% on Nazuby.eu.
+33% conversion
Average conversion rate increased by 33%. Specifically +32% on mobile and +38% on desktop.
A partnership that keeps Top-obaly.cz e-shop revenues growing 40% every year
For over ten years we have been continuously improving the e-shop and making it easier for its customers to shop. Our project management is guided by ongoing research, diligent backlog management, regular status calls, and annual roadmaps.
Top 10% worldwide
Top-obaly has averaged a 9% conversion rate since 2015, placing it among the top 10% of highest-performing e-shops in the world.
98% satisfaction
5 stars in overall satisfaction ratings for Top-obaly from 5,958 out of 6,187 verified Heureka.cz user reviews.
+10% user engagement
User engagement on mobile devices increased by 10%, meaning users interact more with content and stay on the site longer.
70th fastest e-shop
Among the 500 most visited e-shops in the Czech Republic, Top-obaly ranks 70th for desktop and 129th for mobile.
30% year-over-year order growth through digital transformation
Digitalisation brought XCOPY financial and time savings, opened up room for business scaling, and improved company cash flow — all within a single year.
+30% orders
Order volume grew by 30% year-over-year without any additional changes in marketing.
66% time savings
XCOPY digitalisation reduced customer support queries by 66%.
98% automated
Through XCOPY digital transformation, we reduced the share of manually priced orders from 100% to 2%. 98% are now priced automatically, and the share of email enquiries dropped from 90% to 2%.
+60% prepayments
Before digitalisation, XCOPY had no way to accept upfront payments. After digitalisation, 60% of customers pay in advance, which had a very positive impact on company cash flow.
Modern, fast and sustainable technologies
We don't take technical debt lightly. We keep up with the times and choose technologies that won't age too quickly and for which developers who can work with them are available.
How else we can help
UI and web design
Branding and visual identity
Content creation
Content strategy
Our proven know-how
Optimisation? Redesign? Simpler system for partners? Digital transformation?
Let's discuss what you're currently facing
Don't want to wait? Call +420 604 122 182 or email tomas.izak@proofreason.com
Tomáš Izák
CEO
„Proof & Reason don't blindly do what the client wants. They think about the brief, keep an eye on details, and give us thoughtful feedback. They're also strong in development and planning. We always know how the project is progressing. When something goes wrong, they acknowledge their mistake. We treat each other as partners. We're truly developing the e-shop together. It's great and fair.“
Ladislav Carda
E-shop and Logistics Manager, Top-obaly.cz
„Working with Proof & Reason is like getting into a Lamborghini. Yes, they're more expensive than the competition, but their approach and especially the results of their work are absolutely top-class.“
Lukáš Pítra
Online Marketing Expert
„What I value about Proof & Reason is their approach and openness. They always met deadlines and everything was transparent. They don't keep their know-how to themselves — they transfer it to the client. I was able to expand the team's capabilities, teach many people to learn and grow. I see that as a major plus.“
Tomáš Kučera
VP Sales & Marketing, Sticky Password
(now Director of Sales, Lingea)
„A quality result can't be achieved overnight. Work on the website design took a long time, but it was worth it. The result speaks for itself.“
Jan Stejskal
CEO, Nazuby.cz
„We wanted to bring a new application to market for installation companies and solar power plant owners, so that anyone could fully harness the potential of renewable energy sources. We knew it wasn't just about the technical perspective, but also the overall design, UX, and marketing strategy. That's why we chose Proof & Reason, which focuses on the overall customer experience and can approach the topic from multiple angles.“
Michal Hrabi
COO, SOLSOL
