Technical SEO Audit Checklist | 2026 Practical Guide

Use this technical SEO audit checklist to check whether search engines can reach your important pages, understand their content, and show the intended URLs. Start with your homepage, a service page, a pricing page, and a recent article. Technical checks can uncover blockers, but passing them does not guarantee indexing or rankings.

Before you start: tools and a simple audit log

Use Google Search Console for indexing evidence, PageSpeed Insights for mobile performance, and a website crawler or manual link checks for broken URLs. Create an audit log with the page URL, check performed, observed result, recommended fix, and the date you retested it. Mark missing evidence as unknown rather than a pass.

• Fix accidental indexing blocks and inaccessible important pages first.
• Then review canonical URLs, broken links, and mobile usability.
• Finish with titles, headings, structured data, and internal links. Retest affected pages after each change.

1. Crawlability

Before anything else, confirm Google can reach your pages. One stray directive can hide an entire website.

• Open robots.txt and confirm there is no website wide Disallow: / left over from staging.
• Confirm robots.txt references your sitemap.xml.
• Check that no important page carries a noindex meta tag or an X-Robots-Tag header.
• Make sure every page is reachable from at least one internal link, orphan pages rarely rank.

2. Indexation

Crawled is not the same as indexed. Compare the number of pages you expect to rank against what Google actually holds.

• Use URL Inspection in Search Console for specific important URLs. A site: search and sitemap counts are not a complete inventory of indexed pages.
• Review the Pages report in Search Console and read every Not indexed reason.
• Set a self referencing canonical on each page, and never canonicalize a unique page to your homepage.
• Pick one canonical host (www or non www) and 301 redirect the other.

3. Core Web Vitals and speed

Speed is a ranking signal and a conversion signal. Test on mobile, on a throttled connection, not on your office fiber.

• In PageSpeed Insights, check real user data where available: good Core Web Vitals thresholds are LCP at most 2.5 seconds, CLS at most 0.1, and INP at most 200 milliseconds, measured at the 75th percentile. Lab results help diagnose issues but do not replace field data.
• Serve images as WebP, size them correctly, and set explicit width and height to stop layout shift.
• Preload the hero image and lazy load everything below the fold.
• Split large JavaScript bundles so first paint is not blocked by code the page does not need yet.

4. On page and structured data

• Write a descriptive, unique title and summary for each page. Around 60 title characters and 160 description characters are editorial guides, not Google limits or ranking requirements.
• Exactly one H1 per page, with H2s that mirror real buyer questions.
• ProfessionalService or LocalBusiness JSON LD with a NAP that matches your Google Business Profile exactly.
• Use BreadcrumbList for visible navigation and Article for genuine articles. Markup must match visible content; do not add self serving business review ratings to seek review stars.

5. Internal linking and website structure

Internal links tell Google which pages matter. Small websites win by pointing authority at a handful of money pages.

• Every blog post links back to the service page it supports, using descriptive anchor text.
• Keep important pages within three clicks of the homepage.
• Fix broken internal links and link directly to the final URL instead of a redirect chain. Confirm the final page loads and matches the link text.

"Technical SEO does not make a website rank, it removes the reasons it cannot."

How often to audit

Run a full audit twice a year, and a lightweight check every month: Search Console coverage, Core Web Vitals, and broken links. Most regressions come from a redesign, a plugin update, or a new page template, so audit immediately after any of those.

Want the audit done for you?

Our Technical SEO Audit service delivers a prioritized list of fixes with the expected impact of each. Request a free audit and we will show you the three issues costing you the most visibility right now.