Online PC Doctor helps you test your computer, understand browser-visible system information, and review problems through explainable results.
▣ Check My ComputerUpload your image, get a shareable link instantly.
No signup needed · Stored 30 days · Free
Start a scan to see your score and the reasons that affect it.
57 individual tests, plus the All Screen Tests group and 3 calculators — 61 items in total.
Is your monitor perfect? Find dead, stuck or hot pixels in under 60 seconds — no download, works in any browser.
Run the Dead Pixel Test →Pick the test you need and start the check.
See your health score and clear explanations.
Review your results, weigh the AI Doctor suggestions, and get a clearer picture of your computer.
Most tools that call themselves a PC doctor ask you to download and install a program before they will tell you anything. Online PC Doctor works the other way around: every check runs in the browser you are already using, there is nothing to install, nothing to pay for, and no account to create. You press start and the measurement happens on this page.
In a single scan the health check measures real processor speed through a timed workload, how stable that speed is across repeated runs, how many logical processors you have, roughly how much memory the browser can see, which graphics adapter is active, 2D drawing performance, your display resolution and the storage space available to the browser. Alongside it there are separate tools for internet speed, ping stability, screen and dead pixel inspection, microphone, webcam, keyboard, mouse, speakers, headphones, gamepads, touch input and browser security — the full catalog has 57 individual tests, all free.
Browsers deliberately seal off low-level hardware sensors from every website. That means no online PC doctor — this one included — can read CPU or GPU temperature, fan speed, S.M.A.R.T. drive health, battery wear, driver faults, BIOS settings or TPM state. Any site that shows you those numbers from a web page is estimating them. Where we cannot measure something, the report says "not available through the browser" instead of filling the gap with a guess. For those readings you need a utility installed on the computer itself, such as the one your manufacturer supplies.
A single score is easy to produce and hard to act on, so every point deducted is shown next to the category that lost it, with the measured value, the reason and a specific suggestion. If your graphics score is low because hardware acceleration is switched off in the browser, the report says exactly that rather than leaving you with a number. The free AI Doctor analysis then reads the results you genuinely measured and explains them in plain language.
Yes. The tests run inside the browser sandbox and change nothing on your computer. The microphone and camera tests ask for permission at the moment you start them, process the stream locally to draw the level meter or preview, and record nothing. Results stay on your device unless you choose to save them to a free account.
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