Technical SEO for Beginners
If you’ve ever published a page and wondered why it never showed up on Google, the answer usually isn’t your writing — it’s the technical stuff happening behind the scenes. Technical SEO is the work that makes sure search engines can actually find, load, and understand your site. Get it right, and everything else you do for SEO (keywords, content, backlinks) has a fair shot at working. Get it wrong, and even great content can stay invisible.
This guide walks through the five technical SEO basics every small business owner should check: site speed, mobile-friendliness, indexing, HTTPS, and structured data. For each one, we’ll explain what it is, why it matters, and point you to a free tool you can use to check it yourself today.
1. Site Speed
What it is: How quickly your pages load and become usable for a visitor.
Why it matters: Google measures speed and responsiveness through a set of metrics called Core Web Vitals:
- LCP (Largest Contentful Paint) — how long it takes for the main content of a page to load
- INP (Interaction to Next Paint) — how quickly your page responds when someone clicks, taps, or types
- CLS (Cumulative Layout Shift) — how much your page’s layout jumps around while it’s loading
These aren’t just ranking signals — they directly affect whether visitors stay or leave. A slow site loses visitors before it ever gets the chance to convert them into customers.
Free tool: Google PageSpeed Insights
Paste in any URL and PageSpeed Insights will grade your Core Web Vitals for both mobile and desktop, then list specific fixes — like compressing images, removing unused code, or enabling browser caching — ranked by how much impact they’ll have.
Common quick wins: compress and resize images before uploading, avoid autoplaying videos on load, and remove plugins or scripts you’re not actually using.
2. Mobile-Friendliness
What it is: Whether your site works well on a phone or tablet — readable text, tappable buttons, no horizontal scrolling.
Why it matters: Google uses mobile-first indexing, meaning it primarily looks at the mobile version of your site to decide how to rank you, even for people searching on desktop. If your mobile experience is clunky, it affects your visibility everywhere.
Free tool: Google PageSpeed Insights
Google retired its standalone Mobile-Friendly Test tool in December 2023, so PageSpeed Insights is now the go-to free option — just switch to the “Mobile” tab in your results to see mobile-specific scores and issues. If you want a closer look at rendering, open your site in Chrome, right-click, choose Inspect, then toggle the device toolbar (the small phone/tablet icon) to preview it at different screen sizes for free.
Common quick wins: use a responsive theme or template, make sure buttons and links are large enough to tap accurately, and keep pop-ups from covering the whole screen on mobile.
3. Indexing
What it is: The process where Google crawls your pages and adds them to its index — the massive database it actually searches when someone types a query. A page can be live and perfectly readable to humans and still be invisible to Google if it isn’t indexed.
Why it matters: No indexing means no ranking, full stop. Common culprits include accidental “noindex” tags, a robots.txt file blocking important pages, missing or broken sitemaps, and orphaned pages with no internal links pointing to them.
Free tool: Google Search Console
Search Console is free and, once you verify ownership of your site, it becomes your control panel for indexing:
- The Pages report (under Indexing) shows exactly which URLs are indexed and why others aren’t
- The URL Inspection tool lets you check any single page and request indexing after you fix an issue
- The Sitemaps report confirms Google can find and read your XML sitemap
Free tool: Screaming Frog SEO Spider
Screaming Frog crawls your site the way Google does and flags indexability problems at scale — noindex tags, broken links (404s), redirect chains, duplicate title tags, and missing meta descriptions. The free version crawls up to 500 URLs, which is plenty for most small business sites.
4. HTTPS
What it is: HTTPS is the secure version of HTTP — it encrypts the connection between your visitor’s browser and your server. You can spot it by the padlock icon next to your URL in the address bar.
Why it matters: Google has confirmed HTTPS is a ranking signal, and most browsers now flag non-HTTPS sites as “Not Secure,” which is enough to make visitors bounce before they read a word. If you collect any information — even just a contact form — HTTPS is non-negotiable.
Free tool: your browser’s address bar
The fastest check costs nothing: visit your own site and look for the padlock icon. No padlock, or a “Not Secure” warning, means you need an SSL certificate. Most hosting providers now offer free ones through Let’s Encrypt.
Free tool: Screaming Frog SEO Spider
If your padlock shows up but with a warning, you likely have “mixed content” — some elements (images, scripts) still loading over HTTP. Run a crawl in Screaming Frog and filter by protocol to find every HTTP URL still lingering on an otherwise secure site.
5. Structured Data
What it is: Structured data (also called schema markup) is a standardized code format you add to your pages that explicitly tells search engines what your content means — this is a recipe, this is a product with this price, this is a business with these hours. It’s the difference between Google guessing at your content and Google knowing it.
Why it matters: Well-implemented structured data can earn your pages “rich results” in search — star ratings, FAQ dropdowns, product prices, event dates — which stand out visually and tend to get more clicks than a plain blue link.
Free tool: Google Rich Results Test
Paste in a URL or a snippet of code and this free tool (accessible from within Search Console) will show you exactly which structured data it detects, whether it’s valid, and which rich result types you’re eligible for. It’s the fastest way to confirm your schema markup is actually working before you assume it is.
Common starting points: LocalBusiness schema for your homepage, Product schema for e-commerce pages, and FAQ schema for any page that answers common questions.
Your Quick Technical SEO Checklist
To recap, here’s what to check this week:
- Run your homepage through PageSpeed Insights and fix the top 2-3 recommendations
- Check the Mobile tab in PageSpeed Insights and test key pages on an actual phone
- Verify your site in Search Console and review the Pages (Indexing) report
- Crawl your site with Screaming Frog to catch broken links, noindex tags, and redirect issues
- Confirm every page loads with a padlock icon — no exceptions
- Test your homepage and any product or FAQ pages with the Rich Results Test
None of these tools cost anything, and none require a developer to run — though fixing what they find sometimes does. Technical SEO isn’t glamorous, but it’s the foundation everything else sits on. A fast, secure, mobile-friendly, fully-indexed site with clean structured data gives your content the best possible chance of actually being seen.
Not sure where to start, or found more issues than you have time to fix? That’s exactly the kind of audit-and-fix work our team at Efficio Virtual handles for small and growing businesses every day — get in touch and we’ll take a look.
