About HTTP Status Codes

HTTP Status Codes is a quick reference for every standard code, from 100 to 511, each with a short plain-English meaning and a colour by category. Search by a number, a prefix like 50, or a word from the description.

It is a static reference; nothing is uploaded.

How to use it

  1. Type a number or a keyword.
  2. Filter by category (informational, success, redirection, client error, server error).
  3. Click a card to copy the code and its name.

Common questions

Which codes are included?

All the standard IANA-registered codes, plus a few common WebDAV ones and 418.

What do the border colours mean?

They mark the category by the first digit: 1xx, 2xx, 3xx, 4xx, 5xx.

Can I search descriptions?

Yes. A non-numeric query matches words in the name and the meaning.

Is this page online-only?

No. After the first visit it works offline.