How the packet loss test works
The test sends small real-time packets between your browser and a WebRTC test server. It records how many packets return, how long they take, and how much timing varies during the run.
Free browser test
Packet Loss Test
Test packet loss, latency, and jitter in your browser. Useful for gaming, video calls, streaming, and real-time apps.
No download required. Works directly in modern browsers with WebRTC support.
Live packet path
Browser to test server and back
WebRTC
Connection status
Ready to test
idle
Test Settings
Choose a preset or tune the packet profile for your connection.
Size of each test packet.
bytes
64 bytes1200 bytes
Packets sent per second.
pps
1 pps100 pps
How long the recorded test runs.
sec
5 sec120 sec
Packets above this round-trip time are marked late.
ms
50 ms1000 ms
Connection settling time before recording packets.
sec
0 sec5 sec
Auto is enabled for v1.
Test Progress
Connection status, packet counts, and live timing.
Ready
Sent packets
0/150
Received packets
0
Elapsed time
0.0 sec
Current latency
N/A
Current jitter: N/A
What is packet loss?
Packet loss means some data packets never reach their destination. In real-time apps, missing packets can feel like stutter, rubber-banding, audio gaps, or frozen video.
What is a good packet loss result?
Zero packet loss is ideal. Anything above 1% can be noticeable in competitive games, voice calls, and video meetings, even when ordinary browsing still feels fine.
Packet loss for gaming
Real-time apps care about stability more than raw download speed. Low loss, low latency, and low jitter usually matter more than a high bandwidth number.
What causes packet loss?
Wi-Fi interference, overloaded routers, damaged cables, congested ISP routes, VPN issues, and busy servers can all drop packets before they return.
How to fix packet loss
Test with Ethernet, restart network gear, reduce local traffic, update router firmware, remove VPNs from the path, and compare results across server regions.
Explore network quality guides
FAQ
Frequently asked questions
What is packet loss?
Packet loss happens when data packets traveling across a network fail to reach their destination. It can make games lag, calls break up, and real-time apps feel unstable.
Is 1% packet loss bad?
For browsing, 1% packet loss may not be very noticeable. For competitive gaming, voice calls, and video meetings, even 1% packet loss can cause problems.
What causes packet loss?
Common causes include Wi-Fi interference, overloaded routers, bad cables, congested ISP routes, VPN issues, and server-side network problems.
How do I fix packet loss?
Try Ethernet instead of Wi-Fi, restart your router, reduce local network load, update firmware, test without VPN, and contact your ISP if packet loss continues across multiple services.
Why do I have packet loss but good speed?
A speed test measures bandwidth. Real-time apps also need low latency, low jitter, and low packet loss. Download speed can be high while the connection is still unstable.
Is this test accurate?
The test uses WebRTC DataChannel packets to approximate real-time UDP-like traffic in the browser. Results depend on browser support, the chosen server region, and current network conditions.