A practical framework for auditing a website's technical health — what to check, in what order, and how to prioritize fixes that actually move rankings
A technical SEO audit reviews the foundation a site is built on: can search engines crawl and index it, is the on-page markup correct, does it load fast, and is it secure and mobile-friendly? This guide walks through a repeatable audit process you can run yourself, whether you use SeeO's audit tool or another crawler. Each step lists what to look for and why it matters, so you can turn a long to-do list into a prioritized plan.
Start with a full crawl from your sitemap (or a crawler) so you have every indexable URL. Note the total page count and any crawl errors. A crawl is the baseline — without it you are guessing.
Review robots.txt, the XML sitemap, canonical tags, and noindex rules. Look for pages blocked from indexing, canonicals pointing to the wrong URL, and redirect chains that waste crawl budget.
For each important page, check the title tag, meta description, H1 hierarchy, and image alt text. These are the fundamentals search engines use to understand and rank a page.
Map how pages link to each other. Fix orphaned pages (no internal links), tighten deep click paths, and make sure important pages are reachable within a few clicks from the homepage.
Measure LCP, INP, and CLS. Slow pages hurt both rankings and users; prioritize templates and pages with the most traffic.
Confirm the site renders correctly on mobile, uses a responsive layout, and passes mobile usability checks. Most indexing is mobile-first, so this is not optional.
Verify the SSL certificate is valid and every page redirects to HTTPS. Mixed content and expired certificates are easy, high-impact fixes.
Validate schema markup (Organization, Product, FAQ, BreadcrumbList, and others). Correct structured data can unlock rich results and clearer indexing.
Review the link profile: total backlinks, referring domains, and anchor text distribution. A sudden drop in referring domains often explains a rankings drop.
Score issues by impact and sort them into a fix list. Re-audit after changes so you can prove the health score and rankings improved.
At least once per quarter, and immediately after any redesign, migration, or platform change. Continuous monitoring catches regressions between full audits.
You can start with free crawlers and Search Console, but a tool like SeeO's audit automates the 20+ checks and keeps history so you can compare runs. The method in this guide works with any crawler.
There is no single number, but indexability issues (pages that should be indexed but aren't) and Core Web Vitals tend to have the widest impact. Start there before cosmetic fixes.
Re-run the audit and compare the health score and issue count against the previous run. Pair it with rank tracking so you can connect a fix to a ranking change.
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