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HTTP Status Codes

Searchable reference of all HTTP status codes with meanings. Free online — runs locally, no upload.

1xx · Informational

100

Continue

The server has received the request headers and the client should proceed to send the request body.

101

Switching Protocols

The requester has asked the server to switch protocols and the server has agreed.

102

Processing

The server has received and is processing the request, but no response is available yet.

103

Early Hints

Used to return some response headers before the final HTTP message.

2xx · Success

200

OK

Standard response for successful HTTP requests.

201

Created

The request has been fulfilled and a new resource has been created.

202

Accepted

The request has been accepted for processing but is not yet complete.

204

No Content

The server successfully processed the request and is not returning any content.

206

Partial Content

The server is delivering only part of the resource due to a range header.

208

Already Reported

Used inside a DAV propstat response to avoid enumerating members of a collection.

226

IM Used

The server has fulfilled a GET request and the response is a representation of one or more instance-manipulations.

3xx · Redirection

300

Multiple Choices

Indicates multiple options for the resource from which the client may choose.

301

Moved Permanently

This and all future requests should be directed to the given URI.

302

Found

Tells the client to look at another URL for the resource (temporary).

303

See Other

The response to the request can be found under another URI using the GET method.

304

Not Modified

Indicates the resource has not been modified since the version specified by the request headers.

307

Temporary Redirect

Repeat the request to another URI; same method must be used.

308

Permanent Redirect

Use the new URI for all future requests; same method must be used.

4xx · Client Error

400

Bad Request

The server cannot process the request due to a client error (malformed syntax).

401

Unauthorized

Authentication is required and has failed or has not been provided.

403

Forbidden

The request was valid but the server is refusing action.

404

Not Found

The requested resource could not be found.

405

Method Not Allowed

The request method is not supported for the requested resource.

406

Not Acceptable

The requested resource is capable of generating only content not acceptable according to the Accept headers.

408

Request Timeout

The server timed out waiting for the request.

409

Conflict

The request could not be processed because of conflict in the current state of the resource.

410

Gone

The resource is no longer available and will not be available again.

411

Length Required

The request did not specify the length of its content, which is required by the resource.

412

Precondition Failed

The server does not meet one of the preconditions specified in the request headers.

413

Payload Too Large

The request is larger than the server is willing or able to process.

414

URI Too Long

The URI provided was too long for the server to process.

415

Unsupported Media Type

The request entity has a media type which the server or resource does not support.

418

I'm a Teapot

The server refuses to brew coffee because it is, permanently, a teapot.

422

Unprocessable Entity

The request was well-formed but was unable to be followed due to semantic errors.

429

Too Many Requests

The user has sent too many requests in a given amount of time.

5xx · Server Error

500

Internal Server Error

A generic error message; server encountered an unexpected condition.

501

Not Implemented

The server does not recognise the request method, or lacks the ability to fulfil it.

502

Bad Gateway

The server received an invalid response from an upstream server.

503

Service Unavailable

The server cannot handle the request (overloaded or down for maintenance).

504

Gateway Timeout

The upstream server failed to send a request in time.

505

HTTP Version Not Supported

The server does not support the HTTP version used in the request.

511

Network Authentication Required

The client needs to authenticate to gain network access.

About HTTP Status Codes

Look up HTTP status codes online while debugging APIs and proxies. This reference covers common 1xx–5xx meanings so you can interpret responses faster. It sits next to HTTP header and request tools in DevTooKit for a full networking workflow — all local-first.

What stays local: Your lookups stay on-device (static reference).

What you can do with HTTP Status Codes

  • Quick 1xx–5xx status lookup
  • Clear reason phrases and guidance
  • Pairs with HTTP tester and headers tools
  • Free, no account

How to use HTTP Status Codes

  1. Search or browse. Find a status code by number or name.
  2. Read the meaning. Review what the status typically implies for clients and servers.
  3. Keep debugging. Jump to related HTTP tester or headers tools as needed.

Privacy

What stays local: Your lookups stay on-device (static reference). DevTooKit is local-first — no signup wall, no server-side processing for this tool, and no watermark on results.

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FAQ — HTTP Status Codes

Privacy, offline use, and how this free online tool works.

Is this an interactive HTTP client?

This page is a status code reference. Use the HTTP tester tool to send live requests.

Is it free?

Yes — free HTTP status reference with no account.

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