Terms of use
What a check result does and does not prove, what the site guarantees, and how the material may be used.
A check here is worth different things in different situations. Pick yours and get the honest answer.
Free, with nothing to buy
There is no checkout anywhere on this site and no feature behind a payment.
Check it →No account, ever
Nothing here asks who you are. There is no sign-up form to find.
Check it →Media is never recorded
Open the microphone check, then press stop and watch your browser’s recording light go out.
Check it →One check makes requests, and says so
The latency page states it on the page itself, above the button.
Check it →In force since 12 August 2026.
What this site is
DeviceCheckLab is a set of diagnostic checks that run in your browser. Using them means accepting the terms below. If you do not accept them, do not use the checks — there is nothing to cancel and no account to close.
What the results mean, and what they do not
Each check reports what the browser was able to observe. A browser sees devices through several layers — the operating system, the driver, the browser’s own limits — and any of them can change the picture. A result here is therefore a strong hint about where a fault lies, not a certificate about your hardware.
Two consequences worth stating plainly. A device that passes here can still fail inside a particular application, and that itself is useful information. And no check here is a health assessment: the sound check tells you about your speakers and deliberately says nothing about your hearing.
No warranty
The checks are provided as they are, without any guarantee of accuracy, availability or fitness for a particular purpose. Decisions with money attached — a warranty claim, a repair, a purchase — should not rest on this site alone. We are not liable for losses arising from relying on a result here.
Using the material
The text and code of this site belong to its authors. Quoting a passage with a link back is fine. Republishing pages wholesale is not. The report you copy from the summary page is yours: it describes your own device and you may do anything you like with it.
Changes
These terms can change as the checks change. Substantive changes are noted in the release notes, which is also where new checks and fixed faults are recorded.
Contact
Questions about these terms go to info@devicechecklab.com, or through the contact form.