What is the difference between 401 and 403?

401 means “I do not know who you are” — you need to sign in. 403 means “I know who you are, and you are not allowed”.

Should I use 301 or 302?

Use 301 when the address has moved permanently; search engines carry the ranking over to the new one. For something temporary, use 302 or 307.

What is the difference between 404 and 410?

404 means “not here right now”, 410 means “gone for good”. Returning 410 gets it dropped from the index faster.

HTTP status codes

Name: HTTP 상태 코드
Author: KarmoLab

1xx–5xx · names · one line on when to use it

HTTP 상태 코드

200·301·403·404·500 등 HTTP 응답 코드의 뜻과 쓰는 상황을 정리한 표

33개 · 누르면 번호가 복사됩니다.

HTTP response codes such as 200, 301, 403, 404, 429 and 500, with their names and a one-line note on when each is actually used. Search by number or by name.

How to use it

Search by number or name (404, timeout)
Use the chips to show only 4xx or 5xx
Click to copy the number

Common questions

What is the difference between 401 and 403?: 401 means “I do not know who you are” — you need to sign in. 403 means “I know who you are, and you are not allowed”.
Should I use 301 or 302?: Use 301 when the address has moved permanently; search engines carry the ranking over to the new one. For something temporary, use 302 or 307.
What is the difference between 404 and 410?: 404 means “not here right now”, 410 means “gone for good”. Returning 410 gets it dropped from the index faster.

Other tools

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