HTTP Status Codes

Searchable reference of all HTTP status codes with descriptions. Filter by category.

Last updated: September 2026

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Showing 62 status codes

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 final HTTP message.

200

The request has succeeded.

201

Created

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

202

Accepted

The request has been accepted for processing, but processing has not been completed.

203

Non-Authoritative Information

The server successfully processed the request but is returning information from another source.

204

No Content

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

205

Reset Content

The server successfully processed the request, asks the requester to reset its document view.

206

Partial Content

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

207

Multi-Status

The message body contains multiple status codes for multiple independent operations.

208

Already Reported

The members of a DAV binding have already been enumerated.

226

IM Used

The server has fulfilled a GET request for the resource with instance-manipulations applied.

300

Multiple Choices

The request has more than one possible response.

301

Moved Permanently

The URL of the requested resource has been changed permanently.

302

Found

The URI of requested resource has been changed temporarily.

303

See Other

The server sent this response to direct the client to get the requested resource at another URI with a GET request.

304

Not Modified

The response has not been modified, client can use cached version.

305

Use Proxy

The requested resource is available only through a proxy.

307

Temporary Redirect

The server sends this response to direct the client to get the requested resource at another URI with the same method.

308

Permanent Redirect

The resource is now permanently located at another URI, specified by the Location header.

400

Bad Request

The server cannot process the request due to something perceived to be a client error.

401

Unauthorized

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

402

Payment Required

Reserved for future use. Originally intended for digital payment systems.

403

Forbidden

The client does not have access rights to the content.

404

Not Found

The server cannot find the requested resource.

405

Method Not Allowed

The request method is known by the server but not supported by the target resource.

406

Not Acceptable

The server cannot produce a response matching the list of acceptable values defined in the request headers.

407

Proxy Authentication Required

Authentication is required by a proxy.

408

Request Timeout

The server timed out waiting for the request.

409

Conflict

The request conflicts with the current state of the server.

410

Gone

The requested content has been permanently deleted from the server.

411

Length Required

The server rejected the request because the Content-Length header field is not defined.

412

Precondition Failed

The server does not meet one of the preconditions specified by the client.

413

Payload Too Large

Request entity is larger than limits defined by server.

414

URI Too Long

The URI requested by the client is longer than the server is willing to interpret.

415

Unsupported Media Type

The media format of the requested data is not supported by the server.

416

Range Not Satisfiable

The range specified by the Range header field in the request cannot be fulfilled.

417

Expectation Failed

The expectation indicated by the Expect request header cannot be met by the server.

418

I'm a Teapot

The server refuses the attempt to brew coffee with a teapot (RFC 2324).

421

Misdirected Request

The request was directed at a server that is not able to produce a response.

422

Unprocessable Entity

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

423

Locked

The resource that is being accessed is locked.

424

Failed Dependency

The request failed due to failure of a previous request.

425

Too Early

The server is unwilling to risk processing a request that might be replayed.

426

Upgrade Required

The server refuses to perform the request using the current protocol.

428

Precondition Required

The origin server requires the request to be conditional.

429

Too Many Requests

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

431

Request Header Fields Too Large

The server is unwilling to process the request because its header fields are too large.

451

Unavailable For Legal Reasons

The user-agent requested a resource that cannot legally be provided.

500

Internal Server Error

The server has encountered a situation it does not know how to handle.

501

Not Implemented

The request method is not supported by the server and cannot be handled.

502

Bad Gateway

The server, while acting as a gateway, received an invalid response.

503

Service Unavailable

The server is not ready to handle the request, often due to maintenance or overload.

504

Gateway Timeout

The server is acting as a gateway and did not get a response in time.

505

HTTP Version Not Supported

The HTTP version used in the request is not supported by the server.

506

Variant Also Negotiates

The server has an internal configuration error.

507

Insufficient Storage

The server is unable to store the representation needed to complete the request.

508

Loop Detected

The server detected an infinite loop while processing the request.

510

Not Extended

Further extensions to the request are required for the server to fulfill it.

511

Network Authentication Required

The client needs to authenticate to gain network access.

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What is This Tool?

HTTP Status Codes Reference is a free browser-based tool that lets you a comprehensive reference of all HTTP status codes (1xx-5xx) with descriptions, use cases, and troubleshooting tips. It processes everything locally in your browser using JavaScript, so your data never leaves your device. No sign-up, no installation, and no server uploads required — just open the tool and start using it immediately.

How to Use This Tool

Enter the URL, IP address, or network value you want to analyze.
The tool parses and displays all extracted components and details.
Review the structured breakdown of each element.
Copy specific values or the full analysis for your documentation.

When to Use This Tool

This tool is particularly useful when debugging API responses, understanding server errors, or learning about HTTP protocol status codes. Since it runs entirely in your browser, it works offline after the page loads and keeps your data completely private. Whether you are a developer, designer, student, or professional, this web development tool saves time and eliminates the need for desktop software installation.

Tips and Best Practices

URLs and IP addresses are parsed locally — no external lookups are made unless explicitly stated.
The tool follows standard RFCs for URL parsing and network protocol interpretation.
Use the parsed components to debug routing issues, API endpoints, or DNS configurations.
Sensitive URLs containing authentication tokens are safe to paste — nothing leaves your browser.
Results are formatted for easy copying into documentation or bug reports.

Frequently Asked Questions

What does HTTP 404 mean?

HTTP 404 (Not Found) means the server cannot find the requested resource. This usually occurs when a URL is mistyped or the page has been removed.

What is the difference between 401 and 403?

401 (Unauthorized) means authentication is required and has not been provided. 403 (Forbidden) means the server understood the request but refuses to authorize it, even with valid credentials.

What does a 500 Internal Server Error mean?

A 500 error indicates the server encountered an unexpected condition that prevented it from fulfilling the request. It is a generic server-side error, not caused by the client.

What is the difference between 301 and 302 redirects?

301 (Moved Permanently) tells browsers and search engines the resource has moved permanently to a new URL. 302 (Found) indicates a temporary redirect where the original URL should still be used in the future.

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What is This Tool?

When to Use This Tool

Tips and Best Practices

URLs and IP addresses are parsed locally — no external lookups are made unless explicitly stated.

The tool follows standard RFCs for URL parsing and network protocol interpretation.

Use the parsed components to debug routing issues, API endpoints, or DNS configurations.

Sensitive URLs containing authentication tokens are safe to paste — nothing leaves your browser.

Results are formatted for easy copying into documentation or bug reports.

Frequently Asked Questions

What does HTTP 404 mean?

HTTP 404 (Not Found) means the server cannot find the requested resource. This usually occurs when a URL is mistyped or the page has been removed.

What is the difference between 401 and 403?

401 (Unauthorized) means authentication is required and has not been provided. 403 (Forbidden) means the server understood the request but refuses to authorize it, even with valid credentials.

What does a 500 Internal Server Error mean?

A 500 error indicates the server encountered an unexpected condition that prevented it from fulfilling the request. It is a generic server-side error, not caused by the client.

What is the difference between 301 and 302 redirects?

HTTP Status Codes

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HTTP Status Codes

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