Limited availability
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Note: This feature is only available in Web Workers.
The deviceMemory read-only property of the WorkerNavigator interface returns the approximate amount of device memory in gigabytes.
The reported value is imprecise to curtail fingerprinting. It's approximated by rounding down to the nearest power of 2, then dividing that number by 1024. It is then clamped within lower and upper bounds to protect the privacy of owners of very low-memory or high-memory devices.
ValueA floating point number; one of 0.25, 0.5, 1, 2, 4, 8.
The following code can be run in a worker:
const memory = navigator.deviceMemory;
console.log(`This device has at least ${memory}GiB of RAM.`);
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