HTTPステータスコードの基本から301・302リダイレクトの使い分け、SEOへの影響まで徹底解説。テクニカルSEOに欠かせない知識を実践的な事例とともに分かりやすくお伝えします。サイト運営者必見の完全ガイド。 HTTPステータスコードとは？Webサイト運営の ...

Here is another PSA from Gary Illyes of Google. In short, if you serve a 4xx status code with your robots.txt file, then Google will ignore the rules you have specified in that file. Why? Well, 4xx ...

Google has published a new help document explaining how different HTTP status codes affect how a site appears in search results. A recent tweet suggests Google’s Gary Illyes had a hand in putting this ...