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UI/UX best practices for business websites that convert

Practical UI/UX principles for business websites: clear navigation, readable layouts, accessible forms, fast pages and calls to action that convert.

By the Modus Venture teamPublished 3 min read

Most visitors decide within moments whether a website is worth their time. They are not judging the colours. They are asking whether they can find what they came for, quickly and without effort.

These principles help business websites answer that question well. None of them need a big budget, and most make a site easier for everyone to use, including people using assistive technology.

Key takeaways

  • ✓Navigation should use your customers' words and keep the main choices few and clear.
  • ✓Readable text, good contrast and accessible forms help every visitor, not only some.
  • ✓Speed is part of the experience: a slow page loses people before they see the design.

Readability and visual hierarchy

Use a comfortable text size, short paragraphs and headings that describe what follows, so people can scan. Body text needs enough contrast with its background: WCAG 2.2 asks for a contrast ratio of at least 4.5:1 for normal text.

Give the most important element on each page the most visual weight. If everything is bold, nothing stands out.

    Forms and calls to action

    Forms are where interest turns into an enquiry, so small details matter:

    • ✓Ask only for the information you need to reply
    • ✓Use visible labels, not placeholder text that disappears
    • ✓Explain errors next to the field, in plain words
    • ✓Make buttons describe the action, such as "Send brief" rather than "Submit"
    • ✓Confirm clearly that the message was sent and what happens next

    Accessibility basics

    Accessible design is good design. Make sure the site works with a keyboard, has visible focus states, gives images meaningful alt text and uses real headings in order. On touch screens, keep tap targets large enough to hit easily: WCAG 2.2 sets a minimum of 24 by 24 CSS pixels, and Apple and Google recommend larger.

      Speed is part of UX

      A beautiful page that loads slowly on a phone loses visitors before they see it. Compress images, avoid heavy scripts you don't need and test on a mid-range phone over a mobile connection. Google's Core Web Vitals give useful targets: the main content should appear within 2.5 seconds, the page should respond to taps within 200 milliseconds, and the layout should not jump around as it loads.

        Test with real people

        Watching five customers try to complete a task on your site teaches you more than any checklist. Ask them to find a service, compare options and get in touch, and note where they hesitate. For a structured review, see our guide to running a UX audit or our UI/UX design service.

          Modus Venture is a US-founded creative digital agency. If you would rather have an experienced team handle this for you, see our ui/ux design services.

          FAQ

          Common questions.

          • UX (user experience) is how easy and pleasant it is to get something done: the structure, flows and content. UI (user interface) is the visual layer: layout, type, colour and components. Good websites need both.

          • No. Clear contrast, readable text, keyboard support and good form labels make a site easier for everyone, including people on small screens or in bright sunlight.

          • Look at how many visitors complete key actions such as enquiries or purchases, where they drop off, and what they say in testing sessions. Analytics show what happens; user testing shows why.

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