HTTP Status Codes Reference
Look up any HTTP status code and its meaning in one searchable list, from the informational 1xx range through success, redirection, client errors and server errors. When you are debugging an API and a response comes back 409, 422 or 451, a quick reminder of what the code signals saves a trip to the spec. This reference lists the standard codes with their official reason phrases and a short description of when each applies, and you can filter the whole table instantly by typing a number or keyword. Type a code like 404 or a word like redirect to narrow the list. Everything is bundled into the page, so it works offline and makes no external requests at all.
How to use HTTP Status Codes Reference
- Type a status code or keyword.
- Read the matching code names and meanings.
- Use the description to choose the right code.
Frequently asked questions
Which status codes are listed?
It covers the standard HTTP response codes from the 1xx informational range through 5xx server errors, each with its official name and meaning.
What does a 404 versus a 500 mean?
A 404 means the requested resource was not found, while a 500 means the server hit an internal error handling an otherwise valid request.
Can I search by number or name?
Yes. Type a code or keyword and the list filters instantly to matching status codes.
What is HTTP Status Codes Reference?
Look up any HTTP status code and its meaning in one searchable list, from the informational 1xx range through success, redirection, client errors and server errors. When you are debugging an API and a response comes back 409, 422 or 451, a quick reminder of what the code signals saves a trip to the spec.
Is HTTP Status Codes Reference free to use?
Yes. HTTP Status Codes Reference is completely free, with no sign-up and no usage limits.
Does HTTP Status Codes Reference work in a web browser?
Yes. HTTP Status Codes Reference runs in any modern web browser. There is nothing to download or install.
Is my data private with HTTP Status Codes Reference?
Yes. HTTP Status Codes Reference runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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