Technical SEO Checklist for Manufacturing Websites

This technical SEO checklist for a manufacturing website is designed to be run in a single afternoon. Every item is pass or fail, with a quick way to check it. When something fails, fix in order: first whatever stops Google from seeing the page, then whatever confuses it.

Crawling: can Google reach your pages?

1. robots.txt does not block key areas

Open yourdomain.com/robots.txt. A line like Disallow: / or a block on folders such as /products is a critical fail, often left over from a staging site. Pass means only admin and internal search areas are blocked.

2. Product pages have internal links pointing in

Pages with no links to them, called orphans, are rarely found. Run a free crawler, such as the no-cost tier of Screaming Frog, and compare it with your sitemap. Any sitemap URL the crawler did not reach is an orphan.

3. Few 404s and no redirect chains

Fail if important products return 404 or pass through more than one redirect in a row. Fix with a single direct 301 to the new page.

Indexing: does Google keep what it should?

4. Key pages are indexed

In Search Console, run URL Inspection on your ten most important pages. Expected status: URL is on Google. If you see Discovered, currently not indexed, the page is probably thin or duplicated.

5. No important page carries noindex

View the page source and search for noindex in the robots meta tag. On WordPress, the Discourage search engines option, left on after launch, quietly removes the whole site.

6. The Search Console pages report is clean

Open Pages and read the exclusion reasons. Duplicate without user-selected canonical and Crawled, currently not indexed deserve attention; Excluded by noindex is only a problem if the page should be visible.

Canonicals and duplication

7. Each page has a self-referencing canonical

Look for rel=canonical in the source. Pass means the canonical URL is the final version, using HTTPS and a consistent choice of www or non-www. Fail if catalog filters and parameters create dozens of identical URLs with no canonical.

8. Only one version of the domain responds

Test http, https, with www and without. Three of them should 301 to the one you chose.

Sitemap and speed

9. The sitemap lists only valid URLs

It should include pages that return 200, are indexable and canonical, and it should be submitted in Search Console. Fail if it contains 404s, redirects or noindex pages.

10. Pages load well on mobile

Test product pages in PageSpeed Insights. Heavy photos of machinery are the usual culprit. If loading is slow, start by compressing images and enabling lazy loading.

After the audit

Log results in a simple sheet: item, result, example URL, who fixes it and by when. After each fix, request validation in Search Console and check again two weeks later, because Google needs time to reprocess. Keep the sheet: next round, it shows what broke again after a plugin or theme update.

Mark every item pass, fail or not applicable, and assign an owner. Crawling and indexing items come before any copy tweak. If the site needs a rebuild to fix all of this, see what industrial website development involves.

Frequently asked questions

How often should I run this checklist?

Once a quarter, and always after a site redesign, a hosting change or a change in URL structure.

Do I need a paid tool for a technical SEO audit?

No. Search Console, PageSpeed Insights and the free tier of a crawler cover most items above.