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Navigator: deviceMemory property - Web APIs | MDN
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Navigator: deviceMemory property
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The deviceMemory read-only
property of the Navigator 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.
Value
A floating point number; one of 0.25, 0.5, 1, 2, 4, 8.
Examples
js
const memory = navigator.deviceMemory;
console.log(`This device has at least ${memory}GiB of RAM.`);
Specifications
| Specification |
|---|
| Device Memory # sec-device-memory-js-api |
Browser compatibility
See also
Sec-CH-Device-MemoryHTTP header