When you're new to SEO, the technical side feels like a completely different world from writing content or building links. And honestly, it kind of is. Here's where people typically mess up when they're just getting started.
Not setting up canonical tags correctly
Canonical tags tell search engines which version of a page is the "main" one when you have similar or duplicate content. Beginners either skip them entirely or point them to the wrong URL. I've seen sites where the canonical tag on the homepage points to a random blog post. That just confuses everything.
Leaving default meta descriptions
Your CMS probably auto-generates meta descriptions by grabbing the first 160 characters of your page. This often creates descriptions that cut off mid-sentence or don't actually describe what's on the page. They show up in search results, so write something useful.
Poor heading tag hierarchy
Using H1 tags for everything that looks big or having three H1s on one page because you like the font size. Heading tags are supposed to create a logical outline of your content. Screen readers and search engines both use them to understand page structure.
Not optimizing images at all
Uploading 3MB photos straight from your camera because they look fine on your screen. Those massive files murder your page speed. Compress them, use modern formats like WebP, and actually fill in the alt text with real descriptions.
Forgetting about pagination and infinite scroll
If you have paginated content like blog archives or product listings, search engines need a way to crawl through all the pages. With infinite scroll, sometimes they can't access anything beyond the first loaded batch. You need proper pagination links or a sitemap listing all those URLs.
Neglecting JavaScript rendering issues
Your site might rely heavily on JavaScript to display content. Problem is, search engines sometimes struggle to render JavaScript properly, so they might not see important content. Google's gotten better at this, but it's still inconsistent.
Technical SEO isn't glamorous, but it's the foundation everything else sits on. Get these basics sorted before worrying about advanced tactics.