Free Browser Device Check

Device Information Checker

View browser, operating-system, screen, hardware, network and storage information reported by your current device.

Works on computers, tablets and phones. No device permission is required.

Check This Device

Results are read from standard browser APIs and update when the window, connection or device orientation changes.

Browser-reported information only

Privacy protections may hide or generalise details such as the exact device model, processor, graphics hardware or memory.

Detected environment

The live checker identifies the device type, browser, operating system, screen resolution, connection state, secure-context status, touch support, local time and timezone where the browser exposes those values.

Browser and Software

Browser version: Version identified from browser information.
Rendering engine: The engine used to render webpages.
Platform: Platform value exposed by the browser.
Language: Primary browser language and locale.
Cookies: Whether cookies are reported as enabled.
Do Not Track: Browser privacy preference when exposed.
JavaScript: This tool requires JavaScript for the live device scan.
Page visibility: Whether this browser tab is currently visible.

Screen and Viewport

Screen size: Browser-reported dimensions in CSS pixels.
Available screen: Screen space excluding operating-system interface areas.
Browser viewport: Current visible webpage width and height.
Device pixel ratio: Physical display pixels represented by one CSS pixel.
Estimated physical pixels: CSS screen size multiplied by device pixel ratio.
Colour depth: Bits used by the display colour representation.
Orientation: Current portrait or landscape orientation.
Screen aspect ratio: Screen width compared with height.

Processor, Memory and Graphics

Logical processors: Logical CPU threads reported by the browser.
Device memory: Approximate RAM reported by supported browsers.
Maximum touch points: Maximum simultaneous touch contacts reported by the browser.
Pointer type: Primary input precision inferred from browser media queries.
WebGL support: Whether browser-based 3D graphics are available.
Graphics renderer: Renderer exposed by WebGL when allowed.
Graphics vendor: Graphics vendor exposed by the browser.
Battery: Battery level and charging state when supported and exposed.

Network and Browser Storage

Connection status: Whether the browser currently reports an online connection.
Effective connection: General connection category when exposed.
Estimated downlink: A browser estimate rather than an active speed test.
Data saver: Whether reduced-data mode is reported as enabled.
Local storage: Whether persistent browser storage is available.
Session storage: Whether temporary tab storage is available.
IndexedDB: Whether structured browser database storage is available.
Storage estimate: Approximate browser storage use and quota when exposed.

Supported Device Features

The live checker also tests whether the browser exposes support for these web platform capabilities:

Camera and microphone API
Web Audio
Gamepad API
Geolocation
Notifications
Clipboard API
Fullscreen API
Web Share
Service workers
Web workers
WebGL
Motion sensors

Detailed browser scan

Where supported, the detailed scan can request additional browser identification fields such as architecture, bitness, device model, platform version and full browser version. Browsers may keep some of these values unavailable for privacy reasons.

Information Stays in Your Browser

This tool does not upload the detected values. Copying results places a text summary on your clipboard only after you press the copy button.

How to Use the Device Information Checker

Review the detected browser, operating system and device type.
Check screen, processor, memory and graphics information.
Press Run Detailed Scan for additional browser identification where supported.
Resize or rotate the device to update live display values.
Copy the results when sharing information with technical support.

Why Some Details Are Hidden

Modern browsers deliberately reduce device fingerprinting by limiting exact hardware and software details. Values may therefore be rounded, generic or unavailable.

An unavailable value does not mean the hardware is missing. It usually means the browser does not expose that information to webpages.

What the Device Information Checker Detects

This browser-based device checker organises the technical information exposed by your current browser into clear sections covering software, display, hardware, connectivity, storage and supported web features.

Browser and version

Identify the browser name, reported version, rendering engine, platform, language, cookie support and privacy preferences available to webpages.

Operating system

Estimate whether the device is using Windows, macOS, Android, iOS, iPadOS, ChromeOS or Linux from browser identification information.

Screen and viewport

Check screen dimensions, available screen space, viewport size, orientation, colour depth and aspect ratio.

Processor and memory

View logical processor threads and approximate device memory when the browser exposes those details.

Graphics and WebGL

Check WebGL availability and view the graphics renderer or vendor where browser privacy controls allow it.

Network and storage

Review online status, connection estimates, data-saver reporting and support for local storage, session storage and IndexedDB.

Device Information Terms Explained

Browser-reported values do not always match the wording on a device specification sheet. These explanations clarify what the main results mean.

CSS screen size

The width and height reported to websites after browser and operating-system scaling.

Browser viewport

The visible area available to the webpage. It changes when the window resizes or a mobile device rotates.

Device pixel ratio

The approximate number of physical display pixels represented by one CSS pixel.

Estimated physical pixels

A calculation made by multiplying CSS screen dimensions by device pixel ratio.

Logical processors

The number of CPU execution threads reported by the browser, not necessarily physical cores.

Device memory

An approximate privacy-reduced RAM category exposed by supported browsers.

Rendering engine

The browser technology responsible for interpreting HTML, CSS and JavaScript, such as Blink, WebKit or Gecko.

WebGL renderer

The graphics renderer made available to browser-based 2D or 3D content.

When a Device Information Check Is Useful

A device information report provides a quick technical snapshot when diagnosing a website, checking compatibility or sharing details with support.

Troubleshooting a website

Confirm the browser, operating system, viewport, storage support and browser APIs when a website behaves differently on one device.

Checking display scaling

Compare CSS screen size, viewport size and device pixel ratio when layouts appear larger or smaller than expected.

Sharing details with support

Copy a structured report containing browser, operating system, display, hardware, connection and storage values.

Testing browser compatibility

Check whether WebGL, media access, gamepads, geolocation, notifications, clipboard and fullscreen are available.

Why Browser Device Details Can Be Limited

Browsers intentionally restrict exact device information to reduce fingerprinting. Model, processor architecture, memory, graphics, battery and network values may be rounded, generalised or hidden.

Private browsing, extensions, user-agent overrides and stricter privacy settings can reduce the available information further.

What This Checker Cannot Detect

A standard webpage cannot normally read a serial number, product key, personal files, installed applications, exact storage drive model, motherboard model or complete hardware inventory.

It also cannot test component health, storage errors, temperatures, battery condition, drivers or firmware.

What Device Information Can Tell You

Device information can help confirm browser compatibility, screen scaling, input methods and whether browser features required by a website are supported.

Browser information is useful for troubleshooting, but it cannot replace operating-system utilities for exact component models, drivers, serial numbers or hardware health diagnostics.

Device Details Look Incorrect?

Browser privacy, compatibility mode and display scaling can change the information shown here.

Update the browser

Older browsers may expose fewer APIs or report outdated identification information.

Check display scaling

Operating-system scaling can make screen dimensions appear lower than physical resolution.

Disable compatibility mode

Compatibility settings or user-agent overrides can make a browser identify as another browser.

Use system information

For exact hardware models, compare these results with the operating system's device-information utility.

Frequently Asked Questions

Is this device information checker free?

Yes. It is free and does not require an account, download or device permission.

What device information can this checker show?

It can show browser, operating-system, screen, viewport, pixel ratio, processor-thread, approximate memory, graphics, network, storage and browser-capability information exposed by the current browser.

Can this show my exact device model?

Usually not. Most browsers hide or generalise exact model information to reduce device fingerprinting and protect privacy.

Why is device memory unavailable?

The Device Memory API is not supported by every browser and may report only a rounded value.

Does this reveal my serial number or personal files?

No. Standard webpages cannot read hardware serial numbers or browse personal files without a separate user action.

Why is the screen resolution different from the monitor specification?

The browser may report CSS pixels after operating-system scaling rather than the panel's complete physical pixel count.

What is device pixel ratio?

Device pixel ratio is the approximate number of physical display pixels represented by one CSS pixel.

Are logical processors the same as CPU cores?

Not always. Browsers normally report logical execution threads, which can be higher than the number of physical CPU cores.

Can this checker identify my graphics card?

Sometimes. WebGL may expose a graphics renderer and vendor, but privacy controls can replace the exact model with a generic value.

Is estimated downlink an internet speed test?

No. It is a general browser-reported estimate and does not actively download test data.

Why is battery information not reported?

Many browsers do not support the Battery Status API because of privacy considerations.

Can this tell whether my hardware is healthy?

No. It reports available browser information but does not diagnose temperatures, drivers, storage errors, battery health or component faults.

Why do results differ between browsers?

Browsers expose different APIs and apply different privacy rules, so the same device can report different values.

Are these results sent anywhere?

No. Values are calculated and displayed locally in the current browser. Results are copied only when you press the copy button.

Related Device Tests

Screen Resolution Test — Check screen size, viewport, pixel ratio and display classification.
Browser Permission Test — Check camera, microphone, location and other browser permissions.
Complete Device Check — Work through the complete browser-based hardware checklist.

Run the Complete Device Check

Continue with display, audio, camera, keyboard, mouse and controller diagnostics.

Run Complete Device Check