HTTP Status Lookup
Instantly find the meaning, causes, and solutions for any HTTP status code.
The server has received the request headers and the client should proceed to send the request body.
The requester has asked the server to switch protocols and the server has agreed to do so.
The server has received and is processing the request, but no response is available yet.
The request has succeeded. The meaning of this success varies by HTTP method.
The request has been fulfilled and a new resource has been created.
The request has been accepted for processing, but the processing has not been completed.
The server successfully processed the request, but there is no content to return.
The requested resource has been permanently moved to a new URL.
The requested resource has been temporarily moved to a different URL.
The resource has not been modified since the last request.
The server cannot process the request due to malformed syntax.
Authentication is required and has failed or has not been provided.
The server understands the request but refuses to authorize it.
The requested resource could not be found on the server.
The request method is not supported for the requested resource.
The server timed out waiting for the request.
The request conflicts with the current state of the server.
The user has sent too many requests in a given amount of time.
The server encountered an unexpected condition that prevented it from fulfilling the request.
The server does not support the functionality required to fulfill the request.
The server received an invalid response from an upstream server.
The server is currently unable to handle the request due to temporary overload or maintenance.
The server did not receive a timely response from an upstream server.
Domain Knowledge: HTTP Status Codes
HTTP status codes are standardized three-digit numbers returned by web servers to indicate the result of a client’s request. They are essential for web developers, system administrators, and anyone working with web technologies. Each code belongs to a class: 1xx (Informational), 2xx (Success), 3xx (Redirection), 4xx (Client Error), and 5xx (Server Error).
Understanding these codes helps in debugging, SEO, API development, and monitoring website health. For example, 200 means success, 404 means not found, and 500 means server error. Proper use of status codes improves user experience and search engine ranking.
How This Tool Works
The HTTP Status Lookup tool allows you to search for any HTTP status code by number or name. It instantly displays the code’s meaning, category, common causes, and recommended solutions. You can also browse all codes by category for quick reference.
The tool is designed for speed and clarity, making it easy to find the information you need for debugging, development, or learning. All data is processed client-side for privacy and performance.
Key Features
- Instant Lookup: Find any HTTP status code by number or name.
- Category Browsing: View codes grouped by their category (1xx–5xx).
- Common Causes & Solutions: Get practical troubleshooting tips for each code.
- SEO & API Guidance: Learn how codes affect SEO and API responses.
- Mobile Friendly: Fully responsive for all devices.
- Privacy First: No data is sent to any server; all logic runs in your browser.
- Modern UI: Clean, accessible, and easy to use.
These features make the tool ideal for developers, students, and website owners who need quick, reliable status code information.
Common Use Cases
- Debugging: Quickly identify the cause of HTTP errors in web development.
- API Development: Ensure your API returns the correct status codes for each scenario.
- SEO Optimization: Understand how status codes impact search engine indexing.
- Learning: Study the full range of HTTP codes for exams or interviews.
- Monitoring: Track error rates and trends in website analytics.
- Support: Help desk teams can explain errors to users more clearly.
Whether you’re a developer, marketer, or site owner, this tool helps you make sense of HTTP responses and improve your workflow.
Step-by-Step Guide
- Enter a Code or Name: Type a status code (e.g., 404) or a keyword (e.g., Unauthorized) in the search box.
- View Results: Instantly see the code’s meaning, category, causes, and solutions.
- Browse by Category: Scroll down to explore all codes grouped by their category.
- Use for Debugging: Apply the troubleshooting tips to resolve issues in your app or website.
- Learn More: Read the SEO and API sections for deeper understanding.
For best results, use the tool in a modern browser. All features are free and require no registration.