The most common website design mistakes on small business sites are not ugly colours or the wrong font. They are a home page that does not say what the business does, a hidden or missing way to contact you, text nobody can read on a phone, images so large the page takes six seconds to load, and a design built for the owner’s taste instead of the visitor’s question. I review a few sites a week for owners who think they need a redesign, and most of them need five specific fixes instead. This list is those fixes, in the order they cost you the most, with how to check each one on your own site in a couple of minutes.
What are the most common website design mistakes?
| # | Mistake | What it costs you | Two-minute check |
|---|---|---|---|
| 1 | Home page does not say what you do and where | Visitors leave in the first five seconds | Cover the logo and read the top of the page aloud: business type, place, next step? |
| 2 | Contact details buried | Enquiries you never hear about | Can a visitor call, email or book within one tap from any page? |
| 3 | Text too small or too light on mobile | Nobody reads past the first line | Open on a phone: body text 16px or larger, dark on light |
| 4 | Uncompressed images and slow load | Half of mobile visitors gone before it renders | Run PageSpeed Insights; images over 300 KB are the usual cause |
| 5 | No clear call to action | Visitors read and leave | One primary button per page, the same words everywhere |
| 6 | Cluttered home page | Nothing stands out, so nothing gets clicked | Count the things asking for attention above the fold; more than three is too many |
| 7 | Sliders and auto-playing video | Slower pages, ignored messages | Replace the slider with one still image and one headline |
| 8 | Stock photos of strangers | Trust drops; the site looks like every other site | Use photos of the real team, shop, or work |
| 9 | Navigation with ten items | Visitors cannot find the one page that matters | Five to seven menu items; move the rest to the footer |
| 10 | Built for the owner, not the visitor | Answers questions nobody asked | Compare the menu to the five questions clients ask on the phone |
Why is an unclear home page the worst mistake?
Because it wastes every other thing you got right. A visitor arrives from Google or a referral with one question: is this the kind of business I am looking for, near me, and can I take the next step. If the first screen says “Welcome to our website” over a stock photo, they cannot answer it and the back button is closer than the About page. The fix is a headline that names the service and the area (“Family dentist in Leeds, new patients welcome”) and one button. It is dull and it works, which is the point of a business website. Nielsen Norman Group’s list of the worst web design mistakes has been revised since 1996 and “not answering users’ questions” is still on it.
Which mistakes hurt on mobile the most?
- Small text: anything under 16px on a phone is skipped. Light grey on white is the same problem with a different cause.
- Tap targets: links stacked so close together that the thumb hits the wrong one.
- Pop-ups on arrival: a newsletter box covering the whole screen before the visitor has read a word. The Squarespace popup guide explains how to time one so it does not do this.
- Images built for desktop: a 4,000 pixel banner served to a phone on 4G. The best image size for a website gives the numbers per placement.
- Layouts that were only checked on a laptop: columns that stack in the wrong order, buttons that fall off the edge.
Most site traffic for local businesses is now on phones, so a mistake that only shows on mobile is not a minor one; it is the version of the site most people see.
What design mistakes hurt SEO?
Design and search overlap more than people expect. The mistakes that show up in rankings:
- Slow pages from oversized images and too many scripts. Page experience is a ranking factor and, more importantly, a bounce factor.
- Text inside images (headlines saved as JPEGs) that Google cannot read.
- Heading structure used for looks: H1 chosen because it was big, five H1s on one page, no H2s. How many H2 tags a page should have covers the sensible pattern.
- One-page sites that fold every service into a single scroll, leaving nothing for a service keyword to rank.
- Page titles left as “Home” or the template default.
Is it a design mistake or a content mistake?
Often both, and the fix order matters. Redesigning around weak content produces a prettier site that still does not convert. Before any redesign, write the headline, the three to five services, the proof (reviews, work, numbers) and the one action you want, then design to hold those. The questions to ask before redesigning a website are the checklist I use for that conversation, and custom design versus a theme covers whether the fix is a template or a rebuild.
How do you fix these without starting over?
In this order, because each one is cheaper than the next and the early ones pay for the later ones:
- Words first, one afternoon. The home page headline, the subheading and the one action. No design tool needed; edit the text you have.
- Contact and menu, one hour. Phone or booking button in the header, menu cut to the pages that earn money or build trust.
- Images, one evening. Export the biggest ones again at the right size, then run them through a compressor; most builders have a bulk tool or a plugin.
- Mobile pass, one hour on your own phone. Text size, contrast, the order sections stack in, whether the button falls off the edge.
- Photos, when you next have good light. Real people, real premises, replacing the three most visible stock images.
A site with those five passes done is ahead of most of its local competitors. When it needs more than that, the web design services page shows what a rebuild involves, and what to ask a website designer helps you brief whoever does it.
Frequently asked questions
An unclear home page, hidden contact details, text too small on mobile, oversized images that slow the page, no clear call to action, clutter, auto-playing sliders, generic stock photos, oversized menus and a site built for the owner rather than the visitor.
A home page that does not say what the business does, where, and what to do next. Every other improvement is wasted on a visitor who leaves in the first five seconds because they could not answer that.
Yes. Slow pages, text saved inside images, misused headings, one-page sites with nothing to rank per service, and default page titles all limit rankings as well as conversions.
Check five things on a phone: can you tell what the business does in five seconds, can you contact it in one tap, is the text readable, does it load in under three seconds, and is there one obvious button. Two or more failures mean the design is costing you.
Fix it first. Rewriting the headline, surfacing contact details, compressing images and cutting the menu solve most problems in a day. Redesign when the structure itself is wrong or the platform limits you.
Text under 16px, or light grey on white, that nobody can read, closely followed by full-screen pop-ups on arrival and images sized for desktop that take seconds to load on a phone.
