Technical SEO Checklist: 12 Things to Fix on Your Website

Great content won’t rank if search engines can’t crawl, read and trust your website. That’s what technical SEO is about — the foundation everything else sits on. This plain-language checklist covers the 12 technical fixes that make the biggest difference in 2026. You don’t need to be a developer to understand them.

1. Make your site fast

Page speed affects both rankings and whether visitors stay. Slow sites lose traffic before content even loads. Compress images, remove bloat, and use modern, efficient code. Speed is the single most impactful technical factor for most sites.

2. Be mobile-friendly

Google ranks based on the mobile version of your site. If it’s hard to use on a phone — tiny tap targets, text that overflows, painful forms — your rankings and conversions both suffer. Mobile-first isn’t optional.

3. Use HTTPS

Your site should load over HTTPS (the padlock in the browser). It’s a baseline trust and ranking signal, and browsers warn visitors away from sites without it. If you’re not on HTTPS, fix this first.

4. Give every page a unique title and meta description

Each page needs a clear, unique <title> and meta description that include the terms people search for. These are often the first thing a searcher sees — they affect both ranking and whether people click.

5. Use a logical heading structure

One clear <h1> per page, then <h2> and <h3> for sections in a sensible hierarchy. This helps search engines understand your content’s structure — and helps readers, too.

6. Create an XML sitemap

A sitemap lists your important pages so search engines can find them all. Submit it in Google Search Console. Most modern sites generate one automatically — make sure yours exists and is up to date.

7. Set up a robots.txt

This small file tells search engines which parts of your site they can crawl. Make sure it isn’t accidentally blocking pages you want indexed — a surprisingly common and costly mistake.

8. Fix broken links and errors

Broken links and pages that return errors waste crawl budget and frustrate users. Periodically check for 404s and broken internal links, and fix or redirect them.

9. Handle redirects properly

When you move or delete a page, use a proper 301 redirect to its replacement so you don’t lose the value it built. Careless redirects (or none) are a leading cause of traffic drops after a redesign — see signs you need a website redesign.

10. Add structured data

Structured data (schema markup) describes your content to search engines — articles, products, FAQs, your business details. It can earn you richer search results and helps Google understand exactly what your pages are about.

11. Use canonical tags

If similar content exists at multiple URLs, a canonical tag tells search engines which version is the “main” one, avoiding duplicate-content confusion. Important for e-commerce and any site with filtered or paginated pages.

12. Optimize your images

Compress images so they load fast, use modern formats like WebP, and add descriptive alt text. This improves speed, accessibility, and your chances of ranking in image search.

How to use this checklist

You don’t have to do everything at once. Start with the highest-impact items — speed, mobile, HTTPS, and indexing basics — then work through the rest. A technical audit will tell you exactly which apply to your site and in what order.

Frequently asked questions

Can I do technical SEO myself?

Some items (titles, descriptions, alt text, fixing broken links) are very doable. Others — performance, redirects, structured data — often benefit from a developer’s help. A good partner handles all of it as part of how the site is built.

How often should I audit technical SEO?

A thorough audit a couple of times a year, plus a check after any major change to your site, keeps problems from quietly accumulating.

Does technical SEO alone get me to the top?

No — it’s the foundation. You still need content that matches what people search for and signals of authority. But a broken foundation holds everything else back.

Get a technical SEO audit

Not sure which of these your site needs? We start every SEO engagement with a technical audit and a prioritized plan. Tell us about your site and we’ll reply within one business day. Learn more about our SEO services.