After auditing more than 100 Thai SMB websites over the last three years, the same seven mistakes appear on most of them. None of them are exotic. All of them are fixable. Together they cost the typical site 30-60% of its ranking potential.
Mistake 1: Single-language site in a bilingual market
English-only or Thai-only sites lose the half of the market that searches in the other language. Even if 80% of your customers speak Thai, the remaining 20% (often higher-value B2B / expat / tourism segments) can't read you.
Why it persists: "We don't have time / budget to write everything twice."
Why that's wrong: you don't need to translate every page. Translate the 10-15 highest-commercial-intent pages. That captures 80% of the missed traffic for 10% of the effort.
The fix: identify your top 10 commercial pages by Search Console traffic + business value. Have native speakers (not Google Translate) write the second-language versions. Set up hreflang properly so Google serves the right version per user.
Mistake 2: Hero image is 3MB+ JPEG
We routinely audit Thai SMB sites where the homepage hero image is a 3-5MB JPEG. On 4G Android, that's a 4-7 second load time before anything else paints. Core Web Vitals fail. Mobile bounce rate spikes 50%+.
Why it persists: the designer uploaded the original PSD export without compressing or converting to WebP.
The fix: every above-fold image should be WebP, under 200KB, with proper `width` and `height` attributes to prevent Cumulative Layout Shift. Lazy-load everything below the fold.
Mistake 3: Same title tag on every page
We see this constantly. Every page on the site has the title "Home | Brand Name" or "Brand Name — Premium Service". Google can't tell pages apart, so rankings collapse to whichever page Google randomly picks.
The fix: every page needs a unique title tag including the primary keyword for that page. Format: `Primary Keyword | Brand Name`. Service pages get the service name, location pages get the city, blog posts get the post title.
Mistake 4: No proper internal linking
Most Thai SMB sites have a homepage that links to 6-8 main pages, and each main page links back to the homepage. That's it. No topic clusters, no contextual cross-linking, no anchor-text strategy.
This caps your ranking ceiling. Internal links pass authority. Without them, your backlinks accumulate on the homepage and never flow to the pages that need to rank.
The fix: build topic clusters. A "SEO services" pillar page links to 5-10 supporting pages (technical SEO, content SEO, local SEO, etc.). Each supporting page links back to the pillar with descriptive anchor text. Blog posts link to relevant service pages contextually.
Mistake 5: "Contact Us" page hidden in the footer
We see Thai SMB sites where the contact information is one tiny link in the footer. The contact details (phone, address, hours) should be visible on every page in the header AND footer.
Why: customers ready to buy don't want to navigate to a contact page. They want to tap a phone number from any page. Hiding contact info kills conversion AND signals lower trust to Google's local algorithm.
The fix: prominent contact information in the header (phone number visible, WhatsApp/LINE icons). Same in footer with full NAP. Schema markup with all contact details for Google to consume.
Mistake 6: No FAQ section anywhere
FAQ sections feed three things at once: featured snippets (the answer boxes Google shows above results), "People Also Ask" boxes, and user engagement (visitors spend more time scanning FAQs).
Most Thai SMB sites have zero FAQ content. The few that do tend to bury it on a separate /faq page nobody visits.
The fix: every service page should have a FAQ section at the bottom with 4-8 questions answered. Each FAQ entry should be 30-80 words. Add FAQPage schema markup so Google understands the structure.
Mistake 7: No tracking that actually works
We regularly find Thai sites with Google Analytics from 2018 (Universal Analytics, deprecated July 2023), Google Tag Manager half-installed, and conversion tracking measuring page views as conversions.
Without reliable tracking, every optimisation decision is a guess. You can't tell what's working. You can't tell where buyers drop off.
The fix: clean install of GA4 + GTM. Set up actual conversion events (phone click, WhatsApp click, LINE click, form submission, transaction). Verify the data weekly. This is foundational; everything else builds on it.
The total impact
Fixing these seven on a typical Thai SMB site delivers:
- Organic traffic: +30-60% within 90 days
- Conversion rate: +20-40% from better UX
- Map Pack ranking: 1-3 position improvement
- Bounce rate: -20-30% from better page speed + contact visibility
Most of these SEO fixes are achievable in 1-2 weeks of focused work. The compounding traffic + conversion lift typically pays back the work cost in month one.
What to do this week
For a fast self-check:
1. View source on your homepage. Is the title tag generic (same as every other page) or unique? 2. PageSpeed Insights on your homepage. Look at Field Data for mobile. Are any metrics red? 3. View your homepage on incognito mobile. Is the phone number visible in the header without scrolling? 4. View any service page. Does it have a FAQ section at the bottom? 5. Open Google Analytics. When was the last "conversion" event registered?
If you scored 3 or fewer out of 5, the seven-fix cleanup is worth the effort.