HTTP/2 + HTTP/3 Test

Negotiate HTTP/1.1, HTTP/2, and HTTP/3 against any host; report what worked.

Call this tool from the API

Get the same result via REST. Create a free API key at /account/api-keys — 100 calls/day on the free tier; 50k on Pro. 

# curl — JSON response (default)
curl https://internettimes.com:80/api/v1/http2-http3-test/example.com \
  -H "Authorization: Bearer YOUR_API_KEY"

# Markdown response — ingest-friendly for agents
curl "https://internettimes.com:80/api/v1/http2-http3-test/example.com?format=md" \
  -H "Authorization: Bearer YOUR_API_KEY"