Browsers expose a deliberately limited subset: enough for sites to adapt, never enough to inventory your hardware.
Short answer
OS, browser, screen, language, timezone and capabilities are visible In practice, open the linked tool below and compare your live values with the explanations that follow.
How it works
What Device Information Can a Browser Detect? comes down to reading documented browser signals and interpreting them honestly — including when the browser withholds them.
- OS, browser, screen, language, timezone and capabilities are visible
- Exact CPU model, serials and full RAM are withheld
- Safari and Firefox hide more than Chrome
At a glance
| Signal | What you learn |
|---|---|
| Browser report | Live values for this device right now |
| Withheld fields | Privacy protections, not hardware faults |
| Best next step | Use the related tool to verify your own setup |
Practical steps
- Open the related tool and note the highlighted rows.
- Compare them with the points above.
- If something looks off, check zoom, extensions and private mode, then retest.
Try it live: open the related checker and see your own values.
FAQ
Why can't sites see my exact hardware?
Because browser vendors restrict hardware APIs for privacy and security — exact models would make tracking far easier.
Related reading
Bottom line: Safari and Firefox hide more than Chrome When in doubt, trust the live tool over memory — browsers change, and support varies by browser.