offlinewebtools.com — free, watermark-free browser tools that stay on your device with nothing uploading to our servers

Ping & Jitter Tester

Run repeated fetch pings to estimate latency, jitter, and packet loss to any CORS-enabled endpoint.

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

Target URL Samples

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.