Most common SEO mistakes on business websites (and how to avoid them)

Most business sites don't have an "SEO problem" — they have five SEO problems, each costing them ranks. The fixes are usually small. Finding them is the hard part.

Below are the mistakes I see on almost every audit. Each one framed as Mistake → Fix.

Mistake: the site isn't mobile-friendly → Fix: ship a real responsive build

Mobile is the default crawl for Google. If your layout breaks, fonts shrink to 9px, or buttons sit on top of each other on a 390px viewport, you're losing both rank and conversions.

Fix:

• Audit with Lighthouse (mobile preset) and the Chrome DevTools device toolbar — not by squinting at your phone.
• Tap targets ≥ 24×24 CSS px (WCAG 2.2 AA), spaced ≥ 8px apart.
• Body text ≥ 16px, line length 45–75 characters.
• No horizontal scroll. Test 320px viewport — that's the floor.

Mistake: page loads in 8 seconds → Fix: chase Core Web Vitals, not myths

Speed is a ranking factor and a conversion lever. The bar:

• LCP < 2.5s
• INP < 200ms
• CLS < 0.1

Fix:

• Serve images as AVIF/WebP via <picture>. AVIF cuts ~50% vs JPEG.
• Lazy-load below-the-fold images, eager-load the hero only.
• Defer non-critical JS. Inline critical CSS, async the rest.
• Put a CDN in front (Cloudflare, Fastly, Vercel Edge). It's the highest-leverage fix you'll do this year.
• Validate with PageSpeed Insights and field data in Google Search Console's Core Web Vitals report — lab scores lie.

Mistake: duplicate or missing meta tags → Fix: every page gets a unique title and description

Half the business sites I audit ship the same <title> across every page (usually "Company Name | Home"). Google then picks its own — usually badly.

Fix:

• Every page: unique <title> (50–60 chars) and meta description (140–160 chars).
• Title format that works: Primary keyword | Secondary | Brand.
• Run Screaming Frog or Ahrefs Site Audit to find duplicates in 5 minutes.
• For templates (product, blog, category), generate titles dynamically from page content — never hardcode.

Mistake: H1 is the logo → Fix: text H1 with the page's actual topic

I still see business sites where <h1> wraps the logo image. That tells Google "this page is about Company Name" instead of "this page is about industrial coffee machines for hotels."

Fix:

• Exactly one <h1> per page, plain text, matching the page's primary keyword/topic.
• Logo wraps in a <div> or <a> with an aria-label, not <h1>.
• H2/H3 in logical order — no skipping levels for visual styling.

Mistake: thin or duplicated content → Fix: ship something worth ranking

A 120-word page about "Our Services" with a stock photo and a phone number doesn't rank. Neither does the city-page mill where you swap one word and call it 30 unique pages.

Fix:

• Cover the topic well enough that the user doesn't bounce back to Google. Helpful Content > word count.
• Answer the questions a real prospect would ask before buying. Use AlsoAsked, AnswerThePublic, or your sales team's inbox.
• For multi-location sites: write actually different content per city. Local context, not Mad Libs.
• Update old pages — Google rewards freshness when intent demands it.

Mistake: broken canonicals and indexing signals → Fix: audit the technical layer

These are the silent killers — the page looks fine, but Google won't index it.

Common offenders:

• Canonical pointing to a different URL (or https:// vs https://www. mismatch)
• noindex left over from staging
• robots.txt blocking /wp-content/ (kills CSS/JS rendering)
• 301 chains (A → B → C → D)
• Soft 404s — pages that return 200 but say "Sorry, not found"

Fix:

• Google Search Console → Page Indexing report. Read it weekly.
• Run Screaming Frog on the full site monthly. Filter by status code, canonical, indexability.
• Canonical → self-referential unless you genuinely want to consolidate.
• Robots.txt should block almost nothing. CSS/JS must be crawlable for Google to render the page.
• 404 pages: return real 404 status, link back to home + sitemap, no soft-404s.

Mistake: zero internal linking, zero analytics → Fix: link with intent, measure everything

Internal links spread authority and tell Google your content hierarchy. Most business sites have ~3 nav links and that's it. Meanwhile they're flying blind without GSC or analytics.

Fix:

• Link from related blog posts to service pages with descriptive anchor text — never "click here."
• Hub-and-spoke: one pillar page links out to 8–12 cluster pages, each links back.
• Fix internal 404s monthly (Screaming Frog, GSC).
• Install Google Search Console and GA4 (or Plausible/Fathom). Track impressions, CTR, average position by query.
• Review GSC weekly: which queries are gaining/losing, which pages are losing impressions, which clicks aren't converting.

Bonus: keyword stuffing or no keywords at all

Both extremes hurt. Keyword stuffing reads as spam and gets demoted. Zero keyword research means you're writing about topics nobody searches for.

Fix:

• Research before writing: Ahrefs, Semrush, or Google Keyword Planner.
• Target one primary keyword per page, 2–3 secondary, plus long-tail variants.
• Use them naturally — in titles, H2s, the first 100 words, URL slug, image alt text.
• Optimize for long-tail (4+ word queries). Lower competition, higher intent.

Not sure which of these mistakes your site is making? Get my free SEO audit — I'll find them all.