This device
- System
- …
- CPU cores
- …
- Device memory
- Not exposed by this browser.
- Screen
- …
- Graphics
- Not exposed by this browser.
- Language
- …
- Time zone
- …
- Touch
- No
- Automated browser
- No
Coarse bucket reported by the browser (Chrome/Edge).
System Monitor - live device and browser dashboard
See device memory, CPU cores, battery, network, storage and permissions live with charts. Free, no sign-up, local only.
LIVE
Live performance
… fps
- Average (last 60 frames)
- …
- Frame time
- …
- Long tasks
- 0
- Page memory (JS heap)
- Not exposed by this browser.
Main-thread blocks over 50 ms since the page loaded.
Battery
…
Some browsers (e.g. Firefox) do not expose the battery.
Network
…
Site storage
…
Browser permissions
Ask the browser for access. Nothing is recorded or sent anywhere.
- CameraNot asked
- MicrophoneNot asked
- LocationNot asked
- NotificationsNot asked
Location test
Private by design: every reading stays in this tab. Nothing is uploaded or stored.
How to read your system monitor
- Open this page and watch: FPS, page memory, battery, network and storage update live, about twice per second.
- Compare the live FPS with the 60-frame average: steady 60 means smooth; repeated drops plus growing long tasks mean the main thread is overloaded.
- Use the permission buttons to trigger the real browser prompt for camera, microphone, location or notifications. Camera and microphone are released immediately after the test.
- Press “Show my location” to test geolocation: the page shows coordinates and accuracy only on your screen.
- Copy the summary to send your device profile to support — it contains only the values shown above.
- What you will never see here: CPU temperature, fan speed or total CPU/RAM usage. Browsers block those sensors; no website can read them.
Good to know
Why is device memory a round number like 8 GB?
Browsers only reveal a coarse bucket (0.25, 0.5, 1, 2, 4 or 8 GB) to prevent fingerprinting. It is an estimate, and only Chrome and Edge expose it.
Why is there no CPU temperature or fan speed?
No browser API exposes hardware sensors — a website reading them would be a privacy hole. Temperatures and fan RPM need a program installed on the PC.
What is a long task?
Any main-thread job over 50 ms. During it the page cannot respond to taps or draw frames, so a growing count matches visible stutter.
Do permission requests spy on me?
No. The prompt is the browser's own, the answer stays on your device, and camera/microphone test streams are stopped right after the check.