The 15-Minute Technical SEO Check Any Business Owner Can Do

You don’t need to be technical to spot the problems that stop a website from ranking. These five checks take about fifteen minutes, use free tools, and tell you whether Google can find, read and trust your site. If any of them fail, fixing it is often the fastest SEO win available.

Before you start: how Google sees your site

Google finds pages by crawling the web, stores and understands them by indexing them, then serves them in results when someone searches. Technical SEO is about removing anything that gets in the way of those three steps.

You’ll need one free tool: Google Search Console. If you haven’t set it up, do that first. It’s the closest thing to seeing your site through Google’s eyes.

Check 1: Are your pages in Google? (2 minutes)

Type site:yourdomain.com into Google. You’ll get a rough view of the pages Google has indexed (it isn’t a complete list).

Look for: your main service pages, your homepage and your contact page. If important pages are missing, Google either can’t reach them or has chosen not to index them.

For a precise answer on any single page, paste its URL into the URL Inspection tool in Search Console.

Check 2: Is anything blocking Google? (3 minutes)

Open yourdomain.com/robots.txt in a browser. This file tells search engines what they can and can’t crawl.

Red flag: a line that says “Disallow: /” under “User-agent: *”. That blocks your whole site.

Then check for “noindex” tags. In Search Console, the Pages report lists pages “Excluded by ’noindex’ tag”. If your important pages are there, someone needs to remove that tag. This often happens after a website redesign, when a temporary setting is forgotten.

Check 3: How fast is your site? (4 minutes)

Go to PageSpeed Insights and enter your homepage. You’ll see your Core Web Vitals, Google’s measures of real-world page experience.

Google assesses these on real visits, separately for mobile and desktop. Slow, jumpy pages frustrate visitors and cost you enquiries.

Common causes: oversized images, too many plug-ins or scripts, and slow hosting.

Failed a check and not sure what to do next? Our free technical audit pinpoints the cause and tells you what to fix first. Get my free audit →

Check 4: Does it work on mobile? (3 minutes)

Open your site on your phone and try to do what a customer would: find a service, read a page, tap your phone number, fill in your contact form.

Red flags: text too small to read, buttons too close together, pop-ups that cover the page, or a form that doesn’t work.

Check 5: Any broken pages or redirects? (3 minutes)

In Search Console’s Pages report, look for:

• Not found (404): pages Google expected to find but couldn’t.

• Server errors (5xx): your site failed to respond.

• Redirect errors: redirects that loop or chain too long.

A few 404s for genuinely deleted pages are normal. Many errors, or errors on important pages, are not.

Your results: what to do next

• All five passed? Great. Your foundation is solid, and content and authority are your next levers.

• One or two failed? These are usually quick fixes with a big payoff.

• Three or more failed? Your site is likely underperforming in search. A full technical audit is worth it.

Planning a redesign?

Tread carefully. Google notes that moving a site or changing URLs causes ranking fluctuations while it recrawls, and mistakes with redirects can lose traffic you’ve spent years building. Plan your redirects before launch, not after.

[Founder note: add the issue you find most often when you run these checks, with a real example. First-hand detail like this is what Google says sets content apart.]

The bottom line

Technical SEO isn’t glamorous, but everything else in SEO stands on it. Fifteen minutes is enough to know whether yours is solid.

And if it isn’t, that’s usually where we start. At Vantage, an AI-powered SEO agency, technical fixes come first in most projects. We work through them in order of impact, then build on that foundation with content and links, the same work that gets you named in AI answers.

How we made this: we researched and drafted this article with help from AI tools. [Founder name] then rewrote and edited it, and checked every claim against the sources below.