Last updated: 18 August 2026
Volt respects your privacy. Here is exactly what happens to data during the test.
To measure your speed, the test exchanges random measurement data — bytes with no meaning at all. No file and no content of yours is ever transmitted.
That exchange happens with the M-Lab (Measurement Lab) network, an open scientific measurement platform, so that the result is not limited by the capacity of our own server. M-Lab keeps and publishes the measurement (speed, latency, IP address, timestamp) as open research data : that is the principle of the platform, and it is what makes it free. Their policy is available at measurementlab.net.
If M-Lab is unreachable, the measurement runs on our own server ; in that case nothing is stored or linked to you, and the page tells you so. We keep no test result, whichever method is used.
No sign-up required. We only use anonymous traffic statistics — page viewed, time spent on it, device type, language and country. None of this uses a cookie or a third-party service : your IP address is only used to derive the country, then turned into a one-way daily fingerprint that changes every night — it is never stored. If your browser sends the “Do Not Track” or GPC signal, you are not counted at all. On top of that, local storage keeps your theme preference, which stays on your device.
The site is funded by advertising (Google AdSense, for example). These partners may use cookies. Manage personalised advertising in your Google ad settings. A consent banner lets you accept or refuse non-essential cookies (GDPR).
We keep no personal data about you. For data handled by our advertising partners, please refer to their policies.
For any question, write to us via the About & contact page.