Technical SEO Audit: Which Issues Should You Fix First?

In a technical SEO audit, fix indexing problems first, then site structure, then duplicate content, then page speed, structured data and redirects. Any SEO crawler will hand you hundreds or even thousands of warnings, from missing alt text and long titles to redirect chains and duplicate meta descriptions. Finding issues is easy. The skill is telling the ones that hold your site back from the ones you can leave alone.

The sections below follow that order of importance: first make sure Google can find and index your key pages, then help it understand them, then make them quick and trustworthy. Working in this sequence means you fix what costs you traffic before you tidy up what merely looks untidy.

1. Can Google crawl and index your key pages?

Google has to crawl and index your key pages before anything else counts. Open the Page indexing report in Google Search Console and confirm that your most valuable pages, such as service pages, product categories and leading articles, are indexed.

• Review robots.txt for rules that block important sections by mistake.
• Search for leftover noindex tags, which often remain after a launch or redesign.
• Check that the XML sitemap lists only live, indexable pages and is submitted in Search Console.
• Make sure canonical tags point to the version of each page you want to rank.

2. Does your site structure help or hurt rankings?

Site structure affects rankings because search engines partly judge a page's importance by how it is linked. Pages sitting five or six clicks from the homepage, or pages with no internal links at all, are usually crawled less and rank lower.

• Keep key pages no more than three clicks from the homepage.
• Find orphan pages with no internal links and link to them from related pages.
• Write descriptive anchor text for internal links instead of 'click here'.
• On ecommerce sites, control filter and faceted navigation URLs so they do not spawn thousands of near-duplicate pages.

3. Is duplicate or thin content splitting your rankings?

Duplicate and thin content splits your rankings because pages on the same topic compete, and none of them ranks as well as one strong page would. Look for several pages aimed at the same keyword, near-identical location or product pages, and short pages that add little. Combine them with redirects, merge the best material into one page or give each page its own clear purpose.

4. Do your pages pass Core Web Vitals?

Your pages should pass all three Core Web Vitals, because speed and stability influence both rankings and conversions. The targets are:

• Largest Contentful Paint (LCP): how fast the main content appears. The target is 2.5 seconds or under.
• Interaction to Next Paint (INP): how fast the page reacts to a click or tap. The target is 200 milliseconds or under.
• Cumulative Layout Shift (CLS): how much the layout moves while loading. The target is 0.1 or under.

Rely on field data from Search Console, which reflects real visitors, and treat lab tests as a secondary check. The usual causes of poor scores are oversized images, heavy third-party scripts, unoptimised web fonts and elements that load without space set aside for them.

5. Is your structured data correct?

Correct structured data tells search engines what a page describes, such as an organisation, a product, an article or a set of FAQs, and can qualify it for richer search results. Add the schema types that match the page content, test them with Google's Rich Results Test and never mark up content that visitors cannot see.

6. Are redirects, status codes and links in order?

• Update internal links that lead to 404 pages or redirects so they point straight at the final URL.
• Replace chains of redirects with a single redirect wherever you can.
• Point pages that have moved for good to their new address with a permanent 301 redirect.
• After a redesign or migration, check that every old URL with traffic or backlinks redirects to its nearest match.

How should you prioritise technical SEO fixes?

Prioritise technical SEO fixes by scoring each issue on two things: how much traffic or revenue it touches and how much work it takes. Begin with high-impact, low-effort fixes on the pages that matter most to the business. One indexing fault on a key service page is worth more than a thousand missing alt tags on old blog posts.

Next, fix problems at template level wherever possible. Correcting a product page template repairs every product page in one go, which is far quicker than editing pages individually.

What should you do next?

Open Search Console today and check that your ten most valuable pages are indexed and passing Core Web Vitals. That quick review often uncovers the biggest opportunity on the site. For a full, ranked picture, a technical SEO audit will order every issue by its likely effect on traffic and revenue.