テクニカルSEO
Guides on the technical side of search: crawling, indexing, status codes, canonicals, redirects and sitemaps. Each article starts from a real issue found by a deep crawl and explains why it hides pages from search. We show how to find the affected pages and how to fix them on common platforms, including WordPress. The focus is on problems that affect many pages at once, because they cost the most visibility. Examples come from online shops, company websites and blogs. Read these guides before a redesign, a migration or a big content update.
2026/09/18 · 7分で読めますCDN and SEO: Setup Choices That Help or Hurt Search
A CDN can speed up every page or quietly block crawlers and serve stale content. The CDN settings that matter for SEO and how…
2026/09/16 · 8分で読めますWWW, Trailing Slashes and Case: One URL Version Only
www or non-www, with or without a trailing slash, upper or lower case: how URL variants split signals, and how to pick one version…
2026/09/15 · 7分で読めますTechnical SEO Monitoring: Catch Problems Before Traffic Drops
Technical SEO problems appear silently after updates and releases. What to monitor, how often, which alerts matter, and a routine that catches regressions.
2026/09/14 · 7分で読めますSearch Console Page Indexing Report: Every Status Explained
What each reason in Search Console's page indexing report means, which statuses are normal, which need action, and how to work through the report…
2026/09/13 · 7分で読めますMixed Content Errors: How to Find and Fix Them for Good
Mixed content breaks the padlock and blocks scripts on HTTPS pages. How to find every HTTP resource on your site and fix it in…
2026/09/12 · 7分で読めますSitemap Errors in Search Console: What They Mean and Fixes
"Couldn't fetch", "Sitemap could not be read", invalid URLs and more: what each Search Console sitemap error means and how to fix it on…
2026/09/11 · 7分で読めますWordPress Crawl Waste: Feeds, Attachments and Junk URLs
WordPress quietly creates many URLs nobody needs in search: attachment pages, feeds, date archives, search and parameter URLs. How to find and tame each…
2026/09/10 · 7分で読めますOut-of-Stock and Discontinued Products: What to Do for SEO
Keep, redirect, 404 or 410? How to handle temporarily out-of-stock, discontinued and seasonal product pages without losing rankings or frustrating shoppers.
2026/09/08 · 7分で読めますHow to Remove a Page From Google Search, Step by Step
How to remove pages from Google: noindex, 404 or 410, redirects, the Removals tool and outdated content requests, and which method fits each situation.
2026/09/07 · 8分で読めますX-Robots-Tag: How to Control Indexing With HTTP Headers
X-Robots-Tag lets you set noindex and other directives in HTTP headers, including for PDFs and images. How to use it, where to set it…
2026/09/06 · 7分で読めますStaging Site Indexed by Google? How to Fix and Prevent It
What to do when a staging or development site shows up in Google, how to remove it safely, and how to stop staging settings…
2026/09/05 · 8分で読めますMobile-First Indexing: What Must Match on Mobile and Desktop
Google indexes the mobile version of your pages. What must match between mobile and desktop: content, links, metadata, structured data and media.