Search, filter, decode, and troubleshoot 1xx, 2xx, 3xx, 4xx, and 5xx HTTP response status codes. Includes official RFC specifications, REST API best practices, cURL/Fetch snippets, and live browser URL ping inspection.
HTTP Status Catalog28 codes found
202
Accepted
Specification: RFC 9110 §15.3.3
Standard Definition
The request has been accepted for processing, but processing has not completed.
Applicable HTTP Verbs
POSTPUTDELETE
REST API & Architecture Best Practice
Ideal for asynchronous or background job queues. Return a status link in payload.
Code Implementation Snippet
// JavaScript / TypeScript fetch check
const response = await fetch("https://api.example.com/data");
if (response.status === 202) {
console.log("Accepted: The request has been accepted for processing, but processing has not completed.");
}
Live Browser URL Status Inspector
Check live website reachability, round-trip HTTP response latency, and status directly from your local browser instance.
How to Use the HTTP Status Code Reference
1
Search or Filter
Type a 3-digit status code (e.g. 502) or keywords like "rate limit" or "gateway" to instantly narrow down status definitions.
2
Inspect Spec & Fixes
Review standard RFC definitions, applicable HTTP methods, REST API guidelines, common causes, and step-by-step fix recommendations.
3
Inspect Live Endpoint
Enter any web domain or API endpoint in the Live URL Inspector to verify response status and latency directly from your browser.
Why Software Engineers Use HiMat HTTP Status Reference
100% Client-Side Privacy
Zero server logs or request tracking. Search, filter, and inspect status codes completely inside browser memory.
Comprehensive RFC Status Catalog (1xx–5xx)
Searchable database of standard HTTP status codes (RFC 9110, RFC 6585, WebDAV RFC 4918, Cloudflare 52x, IIS extensions).
Real-Time URL Status & Header Inspector
Test live endpoints from your browser to check returned status codes, response time, redirects, and header metadata.
REST API & Webmaster Troubleshooting Guides
Clear actionable guidance on when to use each code, common root causes, and how to fix errors in Node.js, Nginx, and cloud gateways.
Multi-Language Code Snippets
One-click copyable code snippets in JavaScript fetch, Node.js Axios, Python requests, Go http, and cURL.
Instant Search & Category Filtering
Filter instantly by status range (1xx Informational, 2xx Success, 3xx Redirection, 4xx Client Error, 5xx Server Error) or keyword.
100% Open Source Repository
Our HTTP status code catalog and inspector engine are open source under HiMat Technology. Star the repository, inspect the source, or contribute on GitHub.
Unlike remote ping servers that record your query logs or API endpoints, HiMat's HTTP status reference operates 100% inside your local browser instance. URL health checks utilize standard client Fetch Web APIs directly without routing through proxy servers.
Frequently Asked Questions
What are HTTP status codes?
HTTP status codes are 3-digit responses returned by web servers to client browsers or API consumers indicating the outcome of an HTTP request (e.g. 200 OK, 404 Not Found, 500 Internal Server Error).
Is my inspected URL or API request logged on HiMat servers?
No. The HiMat HTTP Status Code Reference & Inspector operates 100% inside your local web browser. When inspecting URLs, requests are dispatched directly from your device using Web APIs without proxying through HiMat backend servers.
What is the difference between 404 Not Found and 410 Gone?
404 Not Found indicates that the requested resource is currently unavailable or missing, but might be available in the future. 410 Gone explicitly tells clients and search crawlers that the resource has been permanently deleted and will not return.
What is the difference between 502 Bad Gateway and 504 Gateway Timeout?
502 Bad Gateway occurs when an upstream gateway server receives an invalid response from a backend application server. 504 Gateway Timeout occurs when the upstream gateway fails to receive a response within the configured timeout window.
Is this HTTP Status Code Checker free to use?
Yes, 100% free with no registration required, no usage limits, and zero advertisements.
Related tools and resources
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