Website Performance Tester
Enter a URL to measure its performance. The tool breaks down the request into DNS lookup, TCP connection, SSL handshake, Time to First Byte (TTFB), and content download phases. See exactly where time is spent. Useful for identifying bottlenecks and monitoring page speed.
What this tool checks
- DNS lookup time
- TCP connection time
- SSL/TLS handshake duration
- Time to First Byte (TTFB)
- Content download time
- Total request duration
- Redirect timing (if applicable)
Automate this with the API
Run this tool programmatically from your code. Get a free temporary API key with 20 requests/day — or register for 75 requests/day.
curl https://apixies.io/api/v1/performance?url=... \
-H "X-API-Key: YOUR_API_KEY"
Frequently asked questions
What is TTFB and why does it matter?
Why are my results different from Google PageSpeed?
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