5 Common Web Design Mistakes and How to Fix Them

If your site looks fine on your laptop but visitors leave quickly, one of these five web design mistakes is usually the reason. Each section explains how to spot the problem and what to change, with WordPress settings where they help.

1. Layouts that break on phones

Most visitors will see your site on a phone first. A design that only works on a wide screen loses them before they read anything.

How to spot it: open the site on your own phone, then in Chrome press F12 and turn on the device toolbar (Ctrl+Shift+M, or Cmd+Shift+M on a Mac). Check a narrow width such as 360 pixels. Look for text running off the screen, images that overflow, and buttons too close together to tap.

What to fix:

• Make sure the page has a viewport tag in its <head>. Any modern WordPress theme includes it:

<meta name="viewport" content="width=device-width, initial-scale=1">

• Stop images overflowing with max-width: 100%; height: auto; in your CSS.
• Set form fields to at least 16px text. Safari on iPhone zooms in on smaller fields, and the page jumps.
• Give images some padding so they don't sit tight against text. Cramped layouts look cluttered on a small screen.
• Choose a small colour palette and check the contrast. The WCAG accessibility guidelines ask for a contrast ratio of at least 4.5:1 for normal text. Use one accent colour for links and buttons, so people can tell what's clickable.

2. A template nobody customised

Templates and themes aren't the problem. Launching one with the demo look untouched is. Visitors can't tell your business apart from every other site using the same design.

Change these before launch:

• Logo, colours and fonts. In a block theme, go to Appearance > Editor > Styles; in a classic theme, Appearance > Customize.
• Every demo image and every line of demo text, including the footer and the 404 page.
• Demo sections that don't apply to you. An empty "Our Team" block looks worse than none.

Put code changes in a child theme, so a theme update doesn't wipe them out. Fully custom design is worth paying for when your sales process doesn't fit a standard layout, such as a booking flow or a product configurator. For a brochure site, a well-customised theme is usually enough.

3. No SEO basics

A good-looking site that search engines can't read properly won't bring in visitors. Check these on every site you launch:

• Search engines are allowed in. In Settings > Reading, make sure Discourage search engines from indexing this site is unticked. It's often left on after a site moves from staging to live.
• Readable URLs. In Settings > Permalinks, choose Post name, ideally before you publish anything.
• Titles and descriptions. Every page needs its own title tag and meta description. An SEO plugin such as Yoast SEO, Rank Math or All in One SEO lets you set them per page.
• One H1 per page, with H2 and H3 headings that describe the sections.
• A sitemap. WordPress has generated one at /wp-sitemap.xml since version 5.5 (SEO plugins replace it with their own). Submit it in Google Search Console.
• Internal links between related pages. Our guide to internal links for SEO explains how to plan them.

Then measure. Google Search Console shows which searches you appear for; Google Analytics 4 shows what visitors do once they arrive and which pages lead to enquiries or sales (GA4 calls these key events). Pick two or three numbers that matter to the business and check them monthly.

4. Skipping maintenance

A site isn't finished at launch. Almost all the security holes reported in WordPress sites are in plugins and themes rather than WordPress itself, and attackers run automated scans for sites that haven't installed the fix.

A basic routine:

1. Update WordPress, plugins and themes regularly. Test major updates on a staging copy first if the site takes payments.
2. Back up automatically, keep copies away from your web server, and try a restore once so you know it works.
3. Remove plugins and themes you don't use. Deactivated code can still be attacked.
4. Protect logins with two-factor authentication for every administrator, and use HTTPS across the whole site.

Our comparison of WordPress security plugins covers firewalls and malware scanning. If the worst has already happened, follow the steps to recover a hacked WordPress site.

5. Bloated code

Every script, stylesheet and plugin adds to what the browser downloads before the page appears. Pile up a page builder, a slider, three font families and a dozen plugins, and the site slows down. Speed is also part of how Google assesses page experience, so slow pages can cost you rankings as well as visitors.

How to spot it: run your key pages through Google PageSpeed Insights. In Chrome DevTools, the Coverage tab (open the command menu with Ctrl+Shift+P and type "coverage") shows how much of each CSS and JavaScript file the page actually uses.

What to fix: remove plugins you don't need, stop scripts loading on pages that don't use them, and trim fonts to the weights you use. Clean, well-organised code also makes the site cheaper to change later, because a developer doesn't have to untangle it first. Our guide to front-end WordPress theme performance goes through images, plugins and render-blocking files step by step.

Where to start

Check the indexing setting and the phone layout first: they take minutes and cause the most damage when they're wrong. Set up updates and backups next. Leave performance tuning and design changes until those basics are in place.

Image: Shutterstock