Technical SEO Audit Checklist for Japanese Websites

Technical SEO Removes Search Friction

Good content cannot perform if search engines cannot crawl, understand, or trust the page. A technical SEO audit finds the issues that quietly block visibility: duplicate canonicals, broken internal links, missing schema, slow JavaScript, weak mobile layout, and stale sitemaps.

Check Crawl and Index Rules

Review robots.txt, meta robots, canonical tags, redirects, and HTTP status codes. Important service pages and blog posts should return 200, be indexable, and have one clear canonical URL. Parameter pages and filtered pages should be handled carefully so they do not create duplicate index bloat.

Validate Sitemap Coverage

Your sitemap should include current public pages and exclude drafts, admin routes, duplicate URLs, and broken links. For blogs, regenerate the sitemap during every build or publish workflow so new posts are submitted naturally.

Review Structured Data

Use schema honestly. Organization, WebSite, Article, BreadcrumbList, FAQPage, LocalBusiness, and Service markup can help search engines understand the page. Validate JSON-LD and make sure schema matches visible page content.

Test Performance and Mobile UX

Run PageSpeed Insights, Lighthouse, Search Console, and real-device checks. Look at LCP, INP, CLS, image size, JavaScript cost, font loading, and tap targets. Mobile users should be able to read, navigate, and contact the business quickly.

Fix in Priority Order

Start with index blockers, broken templates, canonical errors, and sitemap problems. Then improve performance, internal links, schema, and content depth. Technical SEO is most valuable when it turns into a prioritized action list.

If you need a clean technical audit before a redesign or SEO campaign, contact our team.