This is NOT a full diagnostic — it's only what the browser can see, for security reasons. For a real diagnostic (disk, drivers, malware, optimization), use PruPru.exe.
By design, browsers run in a sandbox isolated from the operating system — this protects you from malicious sites, but it also means a web page can never see the real health of your disk, installed drivers, or running processes. The test below shows only what the browser API voluntarily exposes: CPU cores, a RAM estimate (Chrome/Edge only), and network connection type. Use it as a quick curiosity check — for a full diagnostic, you need a native program like PruPru.exe, which accesses the system directly.
The browser can't see disk health, drivers, suspicious processes, or your actual storage space. PruPru.exe checks all of this locally, in seconds.
Download PruPru.exeCPU cores — how many processing cores the browser can see. It's a real number, but it says nothing about the temperature, wear, or overall health of the processor.
RAM memory (estimate) — the browser rounds this value for privacy reasons (fingerprinting), so it's only an approximation, available only in Chrome and Edge.
Connection type — a generic network classification (e.g. 4g), useful only as a rough speed reference, not an actual bandwidth measurement.
Space estimated for the browser — this is the quota the browser reserves for itself (cache, site data), not the actual free space on your disk.
Because the browser deliberately limits what it exposes to web pages, for security and privacy. Task Manager has direct access to the operating system and shows the real values.
No. Everything runs locally in your browser via JavaScript — nothing is sent, saved, or logged on any server.
PruPru.exe runs as a native Windows program, so it accesses disk, drivers, processes, and hardware temperature directly — something no web page can do.