Browser Test
See your browser name, version and user agent, and which web features your browser supports.
Device Info
This page lists what your browser reports about your device: operating system, browser, screen, touch, CPU cores, memory, language, time zone and display preferences. Copy it for a support request; the list is not uploaded.
Values come from browser APIs. Some are rounded or hidden on purpose for privacy. This list is not stored or uploaded. The site's anonymous statistics keep only a few details, with no identifier: the screen size, a viewport width range, pixel ratio, color depth, device type, browser and system family, and country.
Values update when you resize the window or rotate the device.
- Platform
- Checking
- Browser
- Checking
- Screen resolution
- Checking
- Viewport
- Checking
- Device pixel ratio
- Checking
- Color depth
- Checking
- Touch support
- Checking
- Logical CPU cores
- Checking
- Device memory
- Checking
- Language
- Checking
- Time zone
- Checking
- Online
- Checking
- Cookies enabled
- Checking
- Preferred color scheme
- Checking
- Reduced motion
- Checking
Raw user agent
Reading values from your browser…
Runs entirely in your browser. Test results, audio and video never leave your device.
How to check your device information
- Read the list. A row reads Not reported when the browser does not share that value.
- Keep the page open while you resize the window, zoom, rotate the device or switch between light and dark mode. The values update as they change.
- Press Copy to put the whole list and the user agent on your clipboard. If the browser blocks copying, select the text in the box that appears instead.
- Open Raw user agent when a support form asks only for the user agent string.
What can a website see about my device?
A website sees what your browser shares through its APIs and with each request, such as the operating system, browser and version, screen and window size, pixel ratio, touch support, CPU cores, a rounded memory figure, graphics renderer, languages, time zone, display preferences and your IP address. It cannot read the serial number, IMEI or MAC address, and only some Android browsers report the device model.
What a browser cannot see, and where to find it
Browsers do not give web pages the serial number, IMEI or MAC address, or the name you gave your device, and only some Android browsers report the model. Your system settings show them instead.
| Detail | Where to find it |
|---|---|
| Model and device name | Windows: Settings > System > About, or the System Information app. Mac: Apple menu > About This Mac, or System Settings > General > About. iPhone and iPad: Settings > General > About. Android: Settings > About phone or About tablet. |
| Serial number | Mac, iPhone and iPad: the About screens above. Android: often under About phone. Windows PCs: usually a label on the device or its box, or the maker's support app. |
| IMEI (phones) | The About screen on iPhone or Android, or dial *#06#. |
| MAC address | The Wi-Fi or network details in your system settings. Phones often use a different private address for each Wi-Fi network. |
| IP address | Your network settings show the local address. Your router or an IP lookup site shows the public one, which websites receive with each connection. This page does not look it up. |
| Processor, graphics card and exact RAM | On Windows and Mac, the About screens above list the processor and installed memory. The WebGL Test shows the graphics renderer your browser reports. |
What this test can detect
- Your operating system family, and your browser with its major version.
- Your screen size in CSS pixels and the physical pixels it implies, plus the viewport, device pixel ratio and color depth.
- Touch support and the number of touch points the browser reports.
- Logical CPU cores and a rounded device memory figure, where the browser reports them.
- Your preferred languages, and your time zone with its UTC offset.
- Whether the browser is online and has cookies enabled, and your color scheme and reduced motion preferences.
How it works
The page reads standard browser APIs on your device. The platform and browser come from User-Agent Client Hints in Chromium-based browsers and from the user agent string elsewhere; an iPad that presents itself as a Mac is recognized by its touch points. Memory comes from navigator.deviceMemory, cores from navigator.hardwareConcurrency and the time zone from the Intl API.
The values are read again, at most once per frame, when the window is resized or rotated, the connection or language changes, the color scheme or motion preference changes, or the pixel ratio changes after zooming or moving to another screen.
Limitations
- Browsers round, cap or hide some values on purpose, so Not reported or a generic value is normal.
- The platform and browser are what the browser says about itself. Settings, extensions and privacy modes can change them.
- With several monitors, the screen values describe the screen the window is on. The Screen Resolution Test explains how they relate to your display settings.
- The list does not include the refresh rate, HDR support or the physical size of the screen.
- The list does not read motion sensors. The Gyroscope Test shows the gyroscope, accelerometer and compass readings a phone reports.
Frequently asked questions
What operating system am I using?
The Platform row names it, such as Windows, macOS, Chrome OS, Android, iOS, iPadOS or Linux, without a version. The Browser Test adds the version where the browser reports one, and tells Windows 11 from Windows 10 in Chrome, Edge and other Chromium-based browsers.
Why does Device memory show less RAM than I have?
Browsers round the figure to a power of two and cap it, so a computer with 16 GB can read 8 GB or more. It is a rough size class, not the installed amount. Only Chromium-based browsers such as Chrome and Edge report it; Firefox and Safari show Not reported by this browser.
Why is Logical CPU cores higher than my processor's core count?
It counts logical processors, the threads the processor can run at once, as the browser reports them. A processor with 8 cores and 2 threads per core shows 16. Some browsers report a lower or capped number to protect privacy.
Is my device information uploaded?
The list is not. It is read and shown in your browser, and Copy only puts it on your clipboard. Separately, the site's anonymous statistics record a few general details, such as screen size and browser family, which the privacy page lists in full.