How to Do a Complete Technical SEO Audit Using a Domain Crawler

A technical SEO audit sounds intimidating — like something that requires expensive tools, weeks of work, and a certified expert. In reality, for most websites, a solid technical audit takes less than 30 minutes if you know exactly what to look for and have the right crawl data in front of you. This guide walks you through every step.

Step 1 — Crawl the Entire Domain

Before anything else, you need a complete picture of every page on your site. Go to WebCrawler.buzz, paste your domain URL (e.g. https://yourwebsite.com), and hit Start Crawl. The crawler will discover every page within your domain — no depth limit — and collect 12 data points per page including title, meta description, HTTP status, response time, content type, page size, internal links, external links, redirect URL, and indexability.

Once the crawl is done, download the full report as CSV so you can work through it systematically.

Step 2 — Find and Fix All 404 Broken Pages

Filter your crawl results by HTTP status code = 404. Every page in this list is broken. For each one, decide: should this page be restored? If yes, restore the content. If no, set up a 301 redirect to the most relevant existing page. Never leave a 404 just sitting there if there used to be content at that URL — you lose any link equity that was pointing to it.

Also check: are any of your other crawled pages linking to these 404 URLs? Update those internal links to point to the correct destinations.

Step 3 — Audit Your Redirect Chains

Filter by HTTP status codes 301 and 302. A single redirect is normal. A chain of redirects (A redirects to B which redirects to C) is a problem — it slows down page loads, wastes crawl budget, and leaks link authority at each hop. The Redirect URL column in your crawl report shows exactly where each redirect ends up. Identify chains and collapse them to a single direct redirect wherever possible.

Also check for 302 temporary redirects that have been in place for a long time. These should almost always be converted to 301 permanent redirects.

Step 4 — Check Every Page's Title and Meta Description

Filter your crawl report for rows where the Page Title column is empty. These are pages with no title tag — a basic but critical SEO issue. Add a unique, descriptive title to every page.

Next filter for pages where the Meta Description is empty. While meta descriptions are not a direct ranking factor, they heavily influence click-through rate from search results. Write compelling descriptions for your most important pages first.

Finally look for duplicate titles — pages sharing the same title. Each page on your site should have a unique title that clearly describes what is on that specific page.

Step 5 — Review Indexability

Filter for pages where Is Indexable = false. These are pages that have noindex set in their meta robots tag. Go through each one and ask: should this page be indexed? If yes, remove the noindex tag. If no, confirm it is intentional.

Common pages that should be noindex: thank you pages, order confirmation pages, internal search result pages, admin pages. Common pages that should NEVER be noindex but sometimes accidentally are: your homepage, product pages, blog posts, service pages.

Step 6 — Identify Slow Pages

Sort your crawl report by Response Time (ms) in descending order. The pages at the top are your slowest. Page speed is a Google ranking factor — slow pages get ranked lower and crawled less frequently. Prioritize fixing pages that are both slow AND important to your SEO strategy (main landing pages, top blog posts, product pages).

Common causes of slow response times: unoptimized images, too many third-party scripts, no caching, slow hosting, and database query issues.

Step 7 — Find Orphaned Pages

Filter for pages where Internal Links Count = 0. These pages have no other page on your site linking to them, meaning crawlers can only find them by direct URL — they will be crawled rarely if at all, and they carry no internal authority.

For each orphaned page, decide: is this page worth keeping? If yes, add it to your navigation or add internal links from relevant existing pages. If no, consider redirecting it to a related page or removing it entirely.

Conclusion

A complete technical SEO audit does not need to be complex or expensive. With a single domain crawl and a systematic approach — fixing 404s, cleaning up redirects, adding missing titles, reviewing noindex settings, improving slow pages, and connecting orphaned content — you can meaningfully improve your site's technical health in a single afternoon. Run this process every quarter and your site will stay in excellent technical shape all year long.