Web design mistakes that hurt SEO and cost you leads

Here’s a number from our own Search Console. Between June 2025 and October 2026, our homepage showed up 21,267 times in Google for “nashville web design,” at an average position of 8.4. It earned 12 clicks.

That’s a web design agency, on page one for the thing it sells, turning roughly one search in 1,800 into a visit. So before we tell you what’s wrong with your site, you should know we’ve been taking the same medicine.

Well, the truth is that the web design mistakes that hurt SEO aren’t exotic. They’re the same handful we’ve watched sink sites since Ross Jones started building them in Nashville, and they cost you twice: once in rankings, and again in the leads that never show up even when the traffic does.

Tom Malesic, who has run EZ Marketing since 1997, put it bluntly on Unscripted SEO: “the website is the center of all your marketing. If that piece sucks, it doesn’t really matter. Anything else you do is also terrible.”

Mistakes that stop Google understanding your page

Google can only rank what it can read. These three mistakes are about the page being vague, mislabeled or slow, and they’re the ones a good-looking design hides best.

Writing words nobody searches for

Most small business sites describe themselves in their own vocabulary. “Bespoke digital experiences.” “Solutions.” Your customer types “website design for a law firm in Nashville.”

You don’t have to guess which words matter. Open Search Console, go to Performance, click a page, and read the Queries tab. Those are the words Google already associates with you. If the phrase you most want to win isn’t in that list, it probably isn’t on the page in plain language, or it’s sitting in an image.

Once you have the words, put them where they count: the title tag, the H1, the first paragraph, a subheading or two, and the anchor text of links pointing at the page. We wrote that out step by step in how to build a perfectly optimized page.

Using heading tags as font sizes

Heading tags (H1, H2, H3) tell search engines and screen readers how a page is organized. Designers often treat them as a quick way to make text big. That breaks the outline.

The usual offenders:

• The logo or company name wrapped in an H1 on every page.
• Two or three H1s on one page, so nothing is clearly the main topic.
• Whole sentences or paragraphs inside heading tags.
• Headings in the sidebar or footer (“Recent Posts,” “Follow Us”) that compete with the real content.
• A skipped level (H2 straight to H4) because the H4 “looked right.”

Tom Malesic has a useful test for this. As he described it on the show, a page has to work for three readers at once: Tom the scanner, his wife the reader, and Google, which wants to know everything. The scanner reads only your H2s. If those headings don’t carry the argument on their own, you’ve lost the scanner, and you’ve given Google a weaker outline too.

Pages that load slowly

Ask a designer to cut a second off load time and you’ll hear the classics. We need those big images for the brand. Everybody has fast internet now. People don’t mind waiting for a site this nice.

They do mind. Google has used speed as a ranking signal since 2010, and its page experience guidance still points at load time, responsiveness and layout shift. The bigger cost is conversion. Walmart’s web team published a case study on it that showed conversion rate dropping sharply as load time climbed from one second to four.

Run your key pages through PageSpeed Insights on mobile, since Google indexes the mobile version of your site. Then fix the boring things first: oversized images, sliders nobody clicks, and third-party scripts you forgot you installed.

The redesign that throws away what already ranks

This is the most expensive mistake on the list, and we’ve heard the same story for twenty years: “We were getting business from the website, and it all disappeared after the redesign.”

What happened is almost always the same. New URLs, no redirects, and the pages that had earned links and rankings quietly turned into 404s.

Erika Braeger, who manages organic strategy at Tenspeed, gave it as her one red line on Unscripted SEO: “Never rush a website migration.” Her first question to any client planning one is about the business goals behind the move. Sometimes the honest answer is that somebody just likes the other platform better.

Before anybody touches your site, get a list of every URL that gets traffic or has links pointing to it. Then map each one to its new home with a 301 redirect, following Google’s site move guidance. We’re doing exactly this on our own blog right now: 97 old posts are being folded into 16 rewritten articles, and every retired URL points to the closest related article, never just the blog index.

If you’re redesigning a WordPress site, our WordPress SEO guide covers the theme and plugin choices that make this easier.

Mistakes that stop a visitor becoming a lead

A page can rank and still fail. Back in August 2011, sales consultant Phyllis Nichols of Sound Advice Sales gave a talk at our Nashville SEO meetup that we still quote. Her definition of a conversion was simple: making an offer and giving people the chance to say yes. Most sites never make the offer.

No clear next step

Phyllis asked the room a question we still use in audits: is your site 3am ready? Somebody worried or excited lands on your page in the middle of the night. Is there something for them to do, and a way for you to keep the conversation going while you sleep?

Look at each page and ask what you want the visitor to do. Then tell them, show them, and tell them again. Jeremy Rivera, who ran our digital marketing from 2014 to 2022, pairs the main button with an escape hatch: a bright “book a call” on one side, a lighter “download the checklist” or “see pricing” beside it. Traffic now arrives from search, ads, email and AI answers, and a single hard ask misses everyone who isn’t ready today.

Tom Malesic compares a website to a first date. You can look great and say the right things, but “if you never ask her out for a date or ask her for a phone number, you miss the main call to action on the site and the visitor gets there and they have no idea what to do.”

Too many offers and too many words

Phyllis told the story of an IT company whose homepage listed about 30 services. A visitor who needed a conference room set up couldn’t tell whether that was a real specialty or line 12 of a wish list. She had him cut the homepage to his top five, and he started getting interaction.

The same goes for copy. If a homepage runs past a couple of short paragraphs before saying who you help and how to start, people leave before they find out. And sell outcomes, not credentials. Nobody cares how many years you’ve been in business until they believe you can fix their problem.

A contact form nobody is reading critically

We pulled every entry from our own contact forms between 2022 and 2026. There were 1,094 of them. Only 109 were real sales leads. About 87% were spam.

If you measure your site by form submissions, a spam bot looks like a marketing win. Jeremy learned this the hard way at a consultancy: he walked into a meeting with a slide celebrating a 300% jump in leads, and the sales team told him it was their worst month ever. The new leads couldn’t afford the service. Count the leads your sales team would actually call back. Our guide to using Google Analytics like a pro shows how to track the form events that matter.

Who owns your domain and your data?

Everything your web designer sets up for you should be in your name, not theirs. Relationships end, sometimes badly. We’ve helped more than one client who lost control of a domain to a former web partner and had to change their email, business cards and signs to get free.

The same goes for analytics. Your GA4 property and your Search Console access should live under a Google account your company owns, with the agency added as a user. Years of history are what make it possible to tell a Google update from a seasonal dip. Lose the account and you lose the baseline.

A 20-minute check you can run this week

You don’t need a full audit to find the worst of these. Open your site on your phone and work down this list:

1. Does the homepage say what you do, for whom, and where, in the first screen?
2. Is there exactly one H1 on each key page, and is it not your logo?
3. Does PageSpeed Insights score your homepage in the green on mobile?
4. Is there a primary button and a softer second option on every service page?
5. How many of last month’s form entries were real prospects?
6. Is the domain registered to your company, and do you own the GA4 property?

If you’d rather have someone else run it, our Nashville web design team builds sites around these checks from the first wireframe, and a handful of free SEO tools will catch most of the rest.

So here’s the question to sit with: if your site went quiet for a month, would you know whether it was Google, the design, or the form? If you can’t answer that, talk to us.