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HTTP Status Code

A three-digit response code describing the outcome of an HTTP request. Review the concept, business applications and implementation considerations.

Technical SEO & Web Infrastructure

HTTP 상태 코드

HTTP status codes fall into five groups: informational 1xx, successful 2xx, redirects 3xx, client errors 4xx and server errors 5xx. Common SEO checks focus on 200, 301, 404, 410 and 5xx. Search Console’s page reporting helps classify crawling and indexing issues. Widespread server failures can cause Google to reduce crawl frequency. Track 4xx and 5xx rates in server logs or monitoring tools to identify abnormal patterns early.

Business applications and impact#

Provides browsers and crawlers with a standard signal for page availability and redirects.

Implementation guidance and considerations#

Monitor widespread 5xx failures and unintended 4xx errors.

Redirect

리디렉션

Automatically sending visitors and crawlers from one URL to another.

Indexing

색인

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

Crawling

크롤링

The process through which search crawlers follow links, discover URLs and retrieve new or updated content.

301 Redirect

301 리디렉션

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

302 Redirect

302 리다이렉트

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

404 Not Found

404 오류

An HTTP client-error status indicating that the requested resource was not found.

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