Device Memory API

The Device Memory API helps developers determine roughly how much RAM is available on the client device.

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.

References

Device Memory API | MDN