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Avoid these 10 classic web design mistakes

10 web design mistakes to avoid if you want your B2B business to be taken seriously

You probably know the feeling: you click on a website to learn more about a company - and within seconds you've already ruled them out. Why is that? Because their web design either looks like something from 1998 or because it's impossible to find your way around. For B2B companies with technical products and services, a professional and user-friendly website isn't just a nice-to-have - it's part of your credibility.

More than 90% of all B2B commerce journeys start online. The first point on that journey? Your website. And if it's not performing, your leads won't go anywhere. In this post, we take a closer look at 10 classic design mistakes that startups and B2B companies with their own customised web solutions often fall into. We explain why these mistakes are harmful to your business - and how to avoid them.

1. The design is outdated - and it shows

The colours are grey, the fonts are small and cluttered, and it feels like the site hasn't been updated in years. An outdated design sends subconscious signals that your company isn't keeping up with the times either. For tech companies, it can be a killer:

  • It undermines confidence that you're on top of new technology
  • This casts doubt on whether your solutions are still relevant
  • It ruins first impressions with potential B2B customers

Instead, consider updating your design to reflect a modern and professional identity with bright colours, structured layout and easy-to-read typography.

2. Mobile display lags

Even though most B2B customers are sitting at a computer, that doesn't mean the mobile experience doesn't matter. Your leads may be on the train or quickly checking your site on their phone after a meeting. A website that doesn't automatically adapt to different screen sizes creates frustration:

  • You may lose leads that leave the site - especially decision makers with busy calendars
  • Google can de-prioritise you in search results (SEO)

Make sure your web design is responsive and test it on mobile, tablet and desktop in all modern browsers.

3. Messy navigation - where do I click?

When a potential customer visits your website, they have one goal: to find information. A confusing menu or a confusing hierarchy of information quickly makes them give up. We often see this mistake in companies where many decision makers have wanted to ‘have it all’ - and end up with menus with 20 sub-menus.

Keep it simple. Use a fixed top menu with a maximum of 5-7 items and create clear subpages with logical organisation. Ask yourself the question: “If I knew nothing about this company, where would I expect to find this information?”

4. Too much animation - too little purpose

Modern websites should feel alive and interactive. However, when animations are used indiscriminately - with buttons jumping, images flying in and entire sections constantly changing - it ends up being distracting and annoying.

Especially in technical B2B industries, users are not looking for entertainment but for an overview and concrete information. Only use animations if they make sense:

  • Increase focus on calls-to-action
  • Support the user's path through the flow
  • Show data visualisations in an intuitive way

Design isn't about fluff - it's about helping the user achieve their goals.

5. Lack of focus on user needs

A very common mistake is that the site is designed based on what the company thinks is important - not what customers need. When the entire front page is about the company's history or when products are presented in engineering language without context, you lose the user.

Start by understanding what your buyer persona wants to know:

  • What need does your solution solve?
  • Who has already benefited from it?
  • What is the next step if I'm interested?

Design the entire site around these questions - and make it easy to take the next step.

6. Lack of call-to-action (CTA)

You can have the most beautiful website in the world - but if it doesn't guide your visitors to action, you won't get much in return. A classic mistake is that CTA buttons are either missing, poorly worded or don't stand out.

Examples of improvements:

  • Replace “Contact us” with “Book a non-binding meeting”
  • Place CTAs visibly and consistently - e.g. in every section
  • Use contrasting colours and clear icons

Your website shouldn't just inform - it should convert.

7. Heavy images and slow loading

Have you tested how fast your website loads? Slow load times are still one of the biggest reasons why people abandon a website. And it hurts SEO significantly.

Large images or external scripts are often the culprit. Use tools like Google PageSpeed Insights or GTMetrix to find bottlenecks. And optimise your images:

  • Use modern file formats like WebP
  • Compress before uploading
  • Use lazy-loading for images further down the page

8. Poor contrast and difficult text reading

There's something about black text on a dark grey background or white text on neon yellow - it just doesn't work. If your text isn't easy to read, people will drop out.

Choose high contrast between background and text - and make sure the font is easy to read. Use left-aligned text and avoid centred body text. Make the body text at least 16px in font size - preferably larger for older decision makers.

9. Unclear positioning and messaging

If people can't understand what you offer in 5-10 seconds, you've lost a potential customer. Many B2B sites suffer from buzzwords and imprecise texts: “We digitise your business with next-gen value creation.”

Say what you do - and who it's for. Preferably already in the headline. Example:

“Efficient IoT solutions for growing manufacturing companies”

Also, use subheadings that explain typical benefits or target groups - so the customer can quickly recognise them.

10. Lack of social proof and cases

Nobody likes to be the first to try something new. That's why it's important to support your solution with social proof:

  • Customer cases
  • Testimonials
  • Logos from existing customers
  • Trustpilot or references

It puts the B2B buyer at ease and eliminates doubt. And it makes it much easier for your salespeople to get through.

Do you have any of these errors yourself? Most people do

The truth is that most B2B websites - especially those of more technical companies - have at least a few of these problems. Most people just have a hard time seeing it themselves. And that's understandable - because you see your own site with “internal glasses”.

We help B2B companies optimise their websites and generate more leads through design, data and strategy. If you want a concrete and honest assessment of your site, don't hesitate to contact us. It's completely non-binding - and we promise to be straightforward.

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