A tenth of a second that decides who wins the contract

In 2026, users are unforgiving when it comes to websites – if a page takes more than a few seconds to load, they simply close it without a second thought. UX Day 2026 and current international research reveal a surprising fact: even a small improvement in website speed can have a greater impact on your revenue than launching an expensive advertising campaign.

Yet in many companies, speed is treated as a necessary evil that gets addressed only toward the end of a project, or, in the worst case, not at all. In this article, we will look at why “performance first” is a key microtrend you should not ignore – and, most importantly, what you can practically do about it.

Website speed: a small detail that moves the numbers

Speed is no longer just a marginal technical parameter that only grumpy perfectionists care about. Today, speed has a direct impact on revenue. At the recent UX Day 2026 conference, it was made clear that speeding up a website by just 100 milliseconds can deliver an 8.4% better conversion rate while also increasing the average order value by 9%. On the other hand, the same delay – just one tenth of a second – increases the page abandonment rate by a full 5%.

Consider a simple example: if your e-commerce store generates monthly revenue of CZK 1 million, that additional 8.4% translates into a significant CZK 84,000 extra every month. And all because customers get to see the products load slightly faster. The conclusion is clear: speed is now a fully fledged growth channel, not just a nice-to-have at the end. Especially since your competitors may not have thought about it yet, opening up new opportunities for you.

2026 trend: “slow website = dead website”

When we consider web design trends for 2026, speed and absolute performance are not sitting somewhere in the background. They appear confidently alongside innovations such as AI personalization and kinetic typography. International experts agree on one thing: slow websites simply have no place in the market this year. Strict adherence to Core Web Vitals (the metrics Google uses to measure the real-world speed and smoothness of page loading) and overall performance optimization are now regarded as an absolute standard.

Search engines, led by Google, also uncompromisingly factor speed into how they rank pages. Users – most of whom now browse websites and shop on mobile devices – are even less patient. Speed is therefore no longer a competitive advantage you can boast about; it has become basic hygiene. If you fail to meet that standard, you are immediately out of the running for the customer.

What slows down websites of smaller companies the most

Where does the problem most often lie? Usually, it is in things that you, as the client, do not normally see, but your customers feel firsthand within the first few seconds. What holds websites back the most?

• Outdated image formats: images on corporate and marketing websites can easily account for as much as 80% of the website’s total data volume (often more than HTML, CSS, and JS code combined). Yet the vast majority of companies still save photos in JPG format, which was created in 1992. The more modern AVIF format has existed since 2019, can save up to 50% of data, and is supported by the vast majority of browsers, but according to current data, only 1.3% of websites use it.
• Dozens of unnecessary plugins and scripts: chat windows, various trackers, and widgets gradually pile up on websites. But few people review them at least once a year and critically assess whether they really deliver value proportionate to the load they create.
• Cumbersome templates: they may look visually appealing, but beneath the surface lies a mass of unnecessary code and needless animations that reliably kill speed, with the impact becoming particularly critical on mobile devices.
• Missing basic optimization: no lazy loading (delayed loading of images outside the viewport), no caching, missing code minification, or underpowered and poorly configured hosting.

How website owners can easily check whether they have a problem

You do not have to be a programmer to find out how your website is performing. Try these 3 simple steps:

1. Test your website in real-world conditions: Open your website on your phone using mobile data only and turn off Wi-Fi. As an ordinary customer, try going through the entire journey from arriving via a search engine to completing an order or submitting a contact form. And leave the office. If you can test your company website while on a trip in the woods or over coffee at a cabin, you will get even more accurate results. After all, customers do not shop only on fast Wi-Fi in the center of the capital.
2. Use available tools: Enter your website address into free tools such as Google PageSpeed Insights. They will quickly show you how you are performing on Core Web Vitals and what specifically is slowing your pages down.
3. Track the right analytics data: Focus on metrics such as bounce rate, time to first interaction, or the number of abandoned carts. These indicators are very often closely linked to user frustration caused by slow loading.

A business owner does not need to understand every line of code, but they should know that speed can be measured and monitored objectively.

The “performance first” microtrend in practice

So how do these trends show up in practice when creating modern websites? Progressive web designers and international agencies now commonly embrace a “performance first” strategy. In practice, it means one thing: perfect performance, including speed, comes first, and the visual “wow effect” comes second.

During a redesign, teams also carefully test how individual elements (such as a large video in the hero section, complex animations, or external scripts) actually affect loading speed and whether they genuinely help conversions. As was discussed at UX Day 2026, speed is finally starting to be addressed as early as the project strategy preparation phase. This is far more effective than trying to fine-tune speed afterward and firefighting problems just before launch.

What does this mean for you?

To sum it up: a small slowdown of 100 milliseconds can genuinely cost you money every day. At the same time, speed optimization is often just a one-time investment that continues to pay off for a company over the long term. In 2026, lightning-fast speed is an absolutely crucial microtrend – if your website drags, even the most beautiful design or the most expensive advertising campaign will not save it.

Want to make sure your website is not losing money because of speed?

Get in touch. Together, we will look at how your website is currently performing and what specifically can be improved.

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