UX/UI design: 8 mistakes that drive users away (and how to fix them)

The most costly UX/UI design mistakes are not aesthetic: they are the ones that stop users from doing what they came to do. Confusing navigation, long forms, a neglected mobile version, unreadable text or a lack of visual feedback are enough to make someone abandon a purchase, a quote request or a sign-up. Most of them can be fixed without rebuilding the whole site.

UX vs UI: what is the difference?

UX design organises the journey: what users need to find, in what order, with the least possible effort. UI design gives that journey its form: typography, colours, buttons, spacing and icons. A beautiful interface with a confusing journey fails; so does a logical journey with an unreadable interface.

8 mistakes to avoid

1. Navigation that makes people think

Overloaded menus, internal jargon (“Solutions”, “Universe”) or overlapping sections leave users unsure where to click. Keep the main menu to a few clear entries named with your customers’ words, and use the same structure on every page.

2. Too many choices in one place

Three calls to action of equal weight, ten offers side by side: the more options there are, the longer the decision takes. Highlight one primary action per screen and push the others into the background.

3. Forms that are too long

Every extra field lowers completion rates. Ask only for what is essential, group fields logically, mark required fields clearly and show errors next to the relevant field as the user types.

4. Mobile as an afterthought

Most visits now often happen on smartphones. Text that is too small, cramped buttons, unusable menus: design for mobile first. Touch targets must be large enough; Apple’s (44 × 44 points) and Google’s (48 × 48 dp) guidelines are good benchmarks.

5. Pages that load too slowly

Uncompressed images, heavy animations, unnecessary scripts: after a few seconds of waiting, some visitors leave. Speed is also a ranking factor, measured by Google’s Core Web Vitals.

6. Poor contrast and unreadable text

Light grey on white, text over photos, thin fonts: part of your audience simply cannot read. WCAG accessibility guidelines recommend a contrast ratio of at least 4.5:1 for body text. An accessible site is more comfortable for everyone.

7. No visual feedback

A button that doesn’t react, a form sent without confirmation, loading without an indicator: users hesitate and click several times, or give up. Every action should trigger immediate feedback: button state, confirmation message, progress indicator.

8. Never testing with real users

Project teams know the site too well to see its flaws. Watching a few users complete a specific task (finding a service, requesting a quote) reveals in an hour blockers that are invisible in meetings. According to the Nielsen Norman Group, five users are often enough to surface most of the problems.

How to spot these mistakes on your site

Tool	What it reveals
User testing	Concrete blockers along a journey
Heatmaps and session recordings	Where visitors click, scroll and drop off
Google Analytics	Pages and steps with high exit rates
Google Search Console and PageSpeed Insights	Mobile usability and speed issues
Accessibility audit	Contrast, labels and keyboard navigation

FAQ

What is a UX audit?

It is a structured review of a website or app: key journeys, usability, accessibility, performance and usage data. It results in a list of recommendations ranked by impact and effort.

Do you need a full redesign to improve UX?

Rarely. Many gains come from targeted fixes: simplifying a form, clarifying a menu, strengthening contrast, adding a confirmation. A full redesign is justified when the structure itself no longer fits your needs.

What is a design system?

It is the library of interface components (buttons, fields, cards, colours, typography) and the rules for using them. It ensures consistency across pages and speeds up future changes to the website or app.

How do you measure the impact of a UX improvement?

Choose a metric before the change (conversion rate, form abandonment rate, time to complete a task) and compare it afterwards, ideally with an A/B test.

Improve your UX with Uteek

Uteek’s UX/UI design team delivers audits, user journeys, tested prototypes and interfaces for websites and mobile apps, such as this website UX/UI design project. Request a UX audit of your site.