Free Internet Speed Test That Runs in Your Browser

I built a speed test that runs entirely in your browser — no app download, no Java plugin.

How it works

1. Click Start Test
2. Measures latency (ping to nearest CDN)
3. Downloads test payloads to measure throughput
4. Shows results: download speed (Mbps), latency (ms), and rating

Speed Ratings

Speed	Rating	Good For
< 5 Mbps	Slow	Basic browsing
5-25 Mbps	Moderate	HD streaming
25-100 Mbps	Fast	4K streaming
100+ Mbps	Very Fast	Everything

Run Speed Test

No download. No ads. Instant results.

More tools:

• Download Time Calculator
• DNS Lookup
• Screen Resolution

Full toolkit: devtools-site-delta.vercel.app