Some website mistakes make no noise and nobody complains about them, yet they cost you enquiries every week. Here are the most common ones, with what each costs your business and how to fix it.
In this article
When enquiries from the website start to drop, many business owners look for the cause in their ads, their competitors or the season. They rarely go back to the site itself and ask: is something pushing visitors away once they arrive? Yet website mistakes are one of the most common reasons businesses lose customers, because they work silently. Visitors don't write to tell you why they left. They close the tab and open a competitor's site.
The good news is that most of these mistakes are well known and keep repeating, and fixing them rarely means rebuilding the site from scratch. What matters is knowing what they are, and looking at your website the way a stranger would, someone who owes you nothing.
Why Do Small Mistakes Cost So Much?
A website is your shop window and your salesperson at the same time. If your shop door were stuck and only opened with effort, you'd lose plenty of customers without anyone telling you why they didn't come in. A website mistake works the same way, only worse, because you can't see it. There's no awkward moment and no complaint, just numbers that are lower than they should be.
And the cost goes beyond the visitor who left. If you pay for ads that bring people to your site, every mistake raises your cost per customer, because you pay for the visit and then lose it at the door. That's why fixing a single mistake on your website can be worth more than raising your ad budget. The effect also compounds: every month a mistake stays in place means another batch of lost opportunities you will never hear about.
8 Common Website Mistakes and How to Fix Them
The mistakes below show up again and again on company websites, from small shops to large organisations. Next to each one you'll find what it actually costs your business, and a practical fix you can put in place.
The phone number and WhatsApp are hidden at the bottom of the page or only on the contact page
What it costs you: A visitor ready to call has to go looking, and some give up and call a competitor whose number is right there.
The fix: Place visible call and WhatsApp buttons at the top of the page, or keep them fixed while scrolling on mobile, and make the number tap-to-call.
A heavy video or slideshow at the top of the homepage
What it costs you: Content appears late, especially on mobile data, so visitors leave before they even see what you offer.
The fix: Replace it with one well-compressed image and a clear headline. If the video really matters, make it play on tap, not automatically.
An unclear offer: generic phrases that don't say what you sell or to whom
What it costs you: Visitors can't tell whether your service fits them, so they put off the decision, and putting it off usually means forgetting.
The fix: State the service, the audience and the area in your main headline, and explain each service in two plain sentences.
No context at all about cost or what the service includes
What it costs you: Many visitors hold back for fear the cost is beyond their budget, or you receive requests that don't match what you offer.
The fix: If you'd rather not publish prices, explain your packages or the factors that shape the cost, and what the customer gets in each case.
A broken contact form, or one that sends messages to an inbox nobody checks
What it costs you: The most damaging mistake of all: the customer has already sent a request, you never know it exists, and they wait, then go elsewhere.
The fix: Test the form yourself after every change to the site, and make sure messages reach an active inbox and don't land in spam.
Repetitive stock photos with no link to your actual business
What it costs you: Your site looks like a copy of dozens of others, and visitors never see your real work, your premises or what sets you apart.
The fix: Use real photos of your projects, premises and equipment, even simple ones, and keep stock images for backgrounds and minor elements only.
The site was never properly tested on a phone
What it costs you: Buttons crammed together, tiny text and tables running off the screen, on the very device many of your visitors are using.
The fix: Open every page on more than one real device, and try every button and form with your thumb before launch and after any change.
Outdated information: a changed number, a closed branch, an offer that ended long ago
What it costs you: The visitor calls a number that doesn't answer or heads to the wrong address, and leaves thinking the company is no longer active.
The fix: Schedule a regular review of contact details, offers and opening hours, and remove any temporary content as soon as it expires.
The Losses No Report Will Show You
What these mistakes have in common is that none of them looks like a disaster on its own. A phone number at the bottom of the page? "Anyone who wants it will find it." A stock photo? "Everyone uses them." But visitors don't judge each mistake separately. They experience the whole visit, and every small obstacle adds one more reason to leave.
There's another problem: analytics tools tell you how many people left, but not why. So many businesses fall into the trap of changing colours, redesigning the logo or adding animations, while the real cause is a form that hasn't worked for months. Always start with the basics: can a visitor understand your offer and reach you without effort?
Start With the Mistake at the Final Step
If your time is limited, fix whatever touches the moment of contact first: the form, the WhatsApp button and the phone number. These mistakes lose you a customer who had already decided to get in touch, which makes them the most expensive losses and, at the same time, the easiest to fix.
Audit Your Own Website in 20 Minutes
You don't need specialist tools to spot most of these mistakes. Set aside a little time and run three simple tests, ideally writing down everything you notice as you go.
The Mobile Test
Open your website on your phone using mobile data, not the office Wi-Fi. Notice how long it takes for the main headline to appear, and try to reach the call button with one thumb. If you have to zoom in to read text, or tap a button more than once, your visitors are running into the same thing. To go deeper on this, read our article on designing for mobile first.
The Form Test
Send a test message through your contact form as if you were a customer, then follow it: did it arrive? In which inbox? After how many minutes? Did the visitor see a message confirming it was sent? Repeat the same test with the WhatsApp button and the phone number, and check that each one opens the chat or the call directly.
The Fresh-Eyes Test
Ask someone who doesn't know your business to browse the site for one minute, then ask them: what does this company offer? Who is it for? How would you contact them? If they hesitate on any of these, your message isn't clear enough, and the problem is the text, not the reader.
How to Avoid These Mistakes From the Start
Many of these problems are born at the design stage: when a page layout is chosen before anyone defines what the visitor needs, or when a site is handed over without real testing on devices. So ask whoever builds your website how they test forms, how the site looks on mobile, and what happens if a problem appears after handover. Our guide on choosing a web design company covers more questions worth asking before you sign.
At Webnaa, every website is delivered mobile-ready, with a contact form and a WhatsApp button, plus 30 days of technical support after delivery to handle anything that comes up in real use. You can look through the details of our services to see what each type of website includes.
Is Your Website Losing Customers Quietly?
If you've spotted some of these mistakes on your site, tell us about your business and what you've noticed, and we'll suggest a website that avoids them from day one.
Your website doesn't need to be perfect to bring in customers, but it does need to stay out of their way. Fix what blocks visitors first, then move on to other improvements. You may find that some of the enquiries you thought never existed were simply being lost at the door.