What is the HTTP/CURL Online Test?

It is a global HTTP testing tool that fetches URLs from multiple worldwide locations and provides detailed analysis of connectivity, status codes, headers, and performance timings.

Which HTTP methods are supported?

HEAD, GET and OPTIONS are supported as per Globalping HTTP measurement for comprehensive HTTP connectivity and performance testing.

What HTTP performance timings do you measure?

We measure comprehensive HTTP performance including total response time and detailed breakdown: DNS resolution, TCP connection, TLS handshake, time to first byte (TTFB), and download duration.

Can I test HTTPS and HTTP/2?

Yes. The tool supports HTTPS, HTTP, and HTTP/2 protocols. Simply provide the appropriate URL (http://, https:// or http2://) for HTTP connectivity and performance testing across different protocols.

Why do I see a TLS section?

When testing HTTPS URLs, our tool measures TLS handshake time as part of HTTP performance analysis and displays certificate information including issuer, subject, key type and validity.

What does status code mean?

HTTP status codes indicate request results and affect HTTP performance interpretation. 200 means success, 404 means not found, 500 means server error, etc. Our tool displays both numeric codes and their meanings.

What are HTTP Headers?

HTTP headers are key-value pairs sent between client and server that provide metadata about the request or response. They include information like Content-Type, Server, Cache-Control, authentication details, and more. Headers control how browsers and servers communicate.

How can I check response headers?

The tool displays comprehensive response headers including Content-Type, Server, Cache-Control, and others. Headers provide metadata about server configuration and can impact HTTP performance.

What is TTFB (Time to First Byte) in HTTP testing?

TTFB measures the time from request initiation to receiving the first response byte. It's a critical HTTP performance metric indicating server processing speed and network efficiency.

Does this tool follow redirects?

The tool shows actual server responses for HTTP analysis. If servers return redirects (3xx status), you'll see the status code and redirect location in headers, which adds to total response time.

Can I test any URL or domain?

You can test most public URLs and domains for HTTP connectivity and performance analysis. Some servers may block requests or have rate limiting that could affect measurements.

What's the difference between HEAD and GET for HTTP testing?

For HTTP testing, HEAD requests only fetch headers without downloading content (faster response), while GET requests download actual content (shows complete performance including transfer time).

Why would I use this HTTP testing tool?

Use this tool to diagnose slow websites, measure HTTP performance from global locations, analyze server response behavior, examine response headers, troubleshoot HTTP issues, and optimize web performance.

Does this tool test HTTP from my computer?

No, this tool measures HTTP connectivity and performance from our global network probes, not your computer. This provides objective testing from multiple geographic locations worldwide.

HTTP/CURL Online Test

Test HTTP connectivity and analyze server responses, status codes, headers, latency and performance metrics from global locations worldwide.

Test HTTP Connectivity & Performance

Enter a URL and select the HTTP method to test connectivity and performance.

URL or Host

HTTP Method

Fetch headers only (faster, no body content)

Locations

Test from 6 major continents worldwide

Diagnose and Optimize Your Web Services

Our free online HTTP/CURL testing tool is essential for understanding web service availability and performance. Test HTTP connectivity, check status codes, analyze response headers, and measure TTFB from global locations. This comprehensive HTTP testing solution helps developers and webmasters diagnose slow websites, troubleshoot connectivity issues, and optimize web performance across multiple continents.

Check Web Service Availability

Quickly determine if a website or API is responding correctly from our global network. Check HTTP status codes and response times.

Global Perspective

Test from multiple continents to understand how your service performs for users around the world. Identify geographic issues.

Performance Analysis

Analyze DNS lookup times, connection establishment, and total response times to identify bottlenecks.

Measure Network Latency

See the round-trip time (in ms) it takes for data to travel to a server and back. Low latency is critical for gaming, VoIP, and fast web browsing.

Identify HTTP Errors

HTTP errors and timeouts can cause slow web performance and failed connections. Our tool identifies these issues across locations.

Debug APIs & Services

Test REST APIs, webhooks, and web services to verify they are working correctly. Check response headers, content types, and authentication.

Why Use Our HTTP/CURL Tool?

HTTP Connectivity Testing

Quickly identify HTTP connectivity issues and measure response times to web servers worldwide.

Server Monitoring

Check the availability and responsiveness of your remote servers or hosting.

Performance Monitoring

Evaluate response times and timing breakdowns to understand connection quality and optimize user experience.

Easy to Use

An intuitive interface suitable for both technical and non-technical users.

How It Works

Enter URL

Enter the URL (e.g., https://example.com) or domain name.

Choose Method

Select the HTTP method (HEAD, GET, or OPTIONS) from the dropdown.

Start Test

Click the "Start HTTP Test" button to initiate the connectivity test.

Analyze Results

Review the HTTP response details and timing statistics from multiple global locations.

Interpreting HTTP Results

Response Time (Latency): Measured in milliseconds (ms), this is the time for an HTTP request to complete. Lower values are better. Generally:

< 200ms: Excellent
200-500ms: Good
500-1000ms: Fair, might be noticeable
> 1000ms: Poor, likely to impact user experience

Status Code: The HTTP status code returned by the server. 2xx codes indicate success, 4xx indicate client errors, and 5xx indicate server errors.

IP Address: The IP address that responded to the HTTP request. This can be useful to confirm you are reaching the correct server when testing a domain name.

Trust, Quality & Data Transparency

Expertise & Experience

Web performance optimization & HTTP troubleshooting experience from production deployments guides HTTP latency analysis and global connectivity assessment. We designed the HTTP/CURL Test features around realistic operational workflows.

Data Sources

Live HTTP/HTTPS requests from distributed global probes measuring DNS resolution, TCP connection, TLS handshake, TTFB, and download timings with status code and header analysis.

Update Cadence & Quality

Probe network health & timing accuracy reviewed weekly; HTTP protocol handling updates deployed continuously; global location coverage optimized regularly. The rating component reflects genuine user feedback (one rating per browser client ID) and is filtered for abuse.

Privacy & Ethics

Tested URLs and response headers are not stored beyond the active measurement session; only aggregated performance metrics retained for service quality monitoring. See our Privacy Policy for details. No personal account is required.

Accountability

Questions or accuracy concerns? Reach out via the Contact page or learn more About Us. We iterate quickly based on feedback.

Frequently Asked Questions

Continue Your Investigation

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Optimize Your HTTP Performance Today

Use our HTTP/CURL Tool to easily test connectivity and performance, check server responses, latency and headers, and ensure optimal user experience.

Instant HTTP connectivity insights at your fingertips.