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404 Not Found

An HTTP client-error status indicating that the requested resource was not found. Learn how it works and what to consider in practice.

Technical SEO & Web Infrastructure

404 오류

A 404 response clearly identifies a missing resource, helping search engines remove obsolete pages and redirect crawl effort toward available content. It is appropriate for genuinely deleted pages. If a formerly popular URL has a relevant replacement, a 301 redirect can preserve traffic and link value. A custom error page with related-content recommendations and search functionality helps visitors continue browsing rather than abandon the site.

Business applications and impact#

Avoids unnecessary crawling of missing resources and provides a useful error-page experience.

Implementation guidance and considerations#

Keep legitimate 404 responses for deleted URLs; consider relevant 301 replacements for important traffic-generating pages.

301 Redirect

301 리디렉션

An HTTP status code indicating a permanent move to a new URL and supporting the transfer of link equity.

Redirect

리디렉션

Automatically sending visitors and crawlers from one URL to another.

Crawl Budget

크롤 버짓

The crawl capacity and demand that determine how many pages search engines fetch over time.

Indexing

색인

The process of analyzing retrieved web pages and storing their information in a search engine's index.

302 Redirect

302 리다이렉트

An HTTP response code indicating that a resource is temporarily available at another URL.

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