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Most common UX mistakes that lower conversion in an online store

Most common UX mistakes that lower conversion in an online store

Users today shop online quickly and have no patience for non-working or non-intuitive stores. If something is unclear, works slowly or requires too much effort, they very easily abandon the cart and choose the competition. That's why UX in e-commerce has a direct impact on conversion and actual sales results.

In this article, we discuss the most common UX mistakes found in online stores and explain why even seemingly minor problems can lead to the loss of customers.

UX mistakes that most often lower sales

In many online stores, UX problems do not result from one big mistake, but from an accumulation of small shortcomings. A user can tolerate one problem, but several barriers at the same time very quickly lead to abandoning the purchase.

The most common mistakes include:

  • overly complicated purchasing process
  • underdeveloped product pages
  • non-intuitive navigation and information chaos
  • lack of trust-building elements
  • slow page loading and poor performance

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Purchasing process and forms that discourage customers

An overly long and complicated purchasing process is one of the main reasons for abandoning carts. Extensive forms, an excess of required data and a flood of information can effectively discourage users from finalizing the order. Every additional step or distracting element between the decision to buy and payment increases the risk of abandoning the cart.

Simplifying forms, clear messages and transparency of the purchasing process significantly improve the user experience and increase the chances of completing purchases.

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Unclear descriptions and underdeveloped product cards

Product description and photos in an online store replace physical contact with the goods. If they are too general, chaotic or skip important information, the user does not have sufficient basis to make a purchasing decision. The user must clearly understand what they are buying.

A well-prepared description should be clear, logically divided and supplemented with high-quality photos. Lack of information about availability, delivery costs or return conditions is a frequent reason for abandoning carts – not because the price is too high, but because the user does not have full information to make a safe purchasing decision.

Navigation should lead the user to the product in the shortest possible way. In practice, many stores hinder this process through overly extensive and chaotic menus, unclear category names or lack of an effective search engine.

If a user cannot find a product quickly or has to guess where to click, they very often leave the store. A clear structure and logical menu are the basis of good UX in e-commerce.

Trust as an element of user experience

UX is not only about appearance and convenience, but also a sense of security. Lack of customer reviews, unclear information about the company and return policy, lack of contact details and lack of an SSL certificate can effectively discourage purchase, even if the offer is attractive.

The user must be clear about who they are entrusting their data and money to and that the transaction will be secure. Every trust-building element positively affects the purchasing decision.

Page loading speed as a UX element

A slow-running online store is one of the fastest ways to lose customers, especially on mobile devices. As many as 53% of mobile users leave a site if its loading takes longer than 3 seconds.

Performance problems often result from heavy graphics, non-optimal code or inefficient hosting. From the user's perspective, however, it does not matter - all that matters is whether the site works quickly and whether they can make a purchase smoothly.

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How to limit UX mistakes and improve conversion?

Avoiding UX mistakes and improving conversion is a process that should be based on data and regular analysis of user behavior. Instead of introducing changes "by feel", it's worth systematically checking where users encounter difficulties and what really affects their purchasing decisions.

In practice, effective UX optimization includes:

  • analysis of analytical data, such as cart abandonments, time spent on the page or user paths,
  • usability tests, which allow seeing the store through the eyes of real customers and catching problems invisible in statistics,
  • A/B tests, enabling comparison of different versions of key elements such as product cards, checkout or sales messages,
  • regular collection of feedback, e.g., through short surveys or analysis of customer reviews.

Systematic UX optimization makes the store not only look better but primarily work more effectively. Instead of one-time, large changes, small but regular improvements bring better results, gradually eliminating barriers in the purchasing process and increasing conversion.

improving website performance

Why is UX crucial for e-commerce results?

UX mistakes are rarely spectacular – they are more often invisible at first glance but very costly in the long run. Every barrier in the purchasing process is potentially lost sales.

Investing in UX is investing in stable conversion growth, greater customer trust and better business results. Stores that regularly analyze and improve user experience gain a real competitive advantage.

Maciej
Maciej
14.04.2026

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