Check Your Browser, Device & OS Info Online for Free

Check your browser name, version, OS, device type, screen resolution, and user agent instantly.

Runs fully in your browser. No file upload required.Last updated: 2026-03-10

Browser & Device Info tool interface

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What It Does

Check your browser name, version, OS, device type, screen resolution, and user agent instantly.

Nextooly’s Browser & Device Info tool instantly displays detailed information about your browser, operating system, device type, screen resolution, viewport size, user agent, language, pixel ratio, and available memory. All detection is done entirely inside your browser with zero data logging, uploads, or tracking.

This tool is ideal for developers, testers, QA teams, and users who want to quickly check compatibility, debug device-specific issues, or verify UI responsiveness. You can also copy the complete information in JSON format for support or debugging.

Example

Input: Your current browser session on the device you want to inspect.

Output: A live report covering browser version, OS, viewport, screen details, and user agent data.

Best For

People who need to use browser & device info quickly without installing software.
Confirm which browser version a client is using.
Copy a support-ready browser report.
Check screen and viewport details for responsive QA.
Verify device memory exposure.
Not ideal for: locked-down browsers or devices that block the APIs this workflow depends on.

Key Features

Runs entirely in your browser for a private, on-device workflow.
Keeps files and text on your device with no server upload step.
Includes copy-friendly output for faster reuse in other tools or tickets.
Includes layout controls such as font size, margins, page size, or orientation.
Supports JSON-friendly workflows when structured data needs a cleaner view.
Reports live camera diagnostics such as resolution, frame rate, or mirror mode.

Pricing

Plan type: Free
Price: $0
Limits: Results depend on what the current browser and device are willing to expose through web APIs.

Pros

Keeps sensitive input on your device.
Includes practical controls for common real-world inputs.
Produces output you can use immediately.

Cons

Results can vary based on browser permissions and which web APIs your device exposes.
Advanced automation or team-wide workflows may still need desktop software or APIs.

Alternatives

If Browser & Device Info is close but not quite the right fit, these related Nextooly tools cover adjacent device & browser workflows without sending you to another service.

DNS Leak Test (Lite)

Best if you need to check your DNS resolver, WebRTC leaks, and VPN privacy status.

What is my IP?

Best if you need to discover local IP candidates exposed by your browser.

Camera Tester

Best if you need to test your webcam with a live preview, resolution, FPS, snapshots, and mirror mode right in the browser.

FAQ

Does this tool expose or send my device information to any server?

No. All detection happens locally in your browser. Nothing is uploaded, logged, or shared.

What information does the tool display?

It shows your browser name/version, operating system, device type, screen resolution, viewport size, language, pixel ratio, and device memory (if supported).

Why is the User-Agent string shown?

The User-Agent string helps identify your browser and OS. Developers often use it for debugging compatibility issues.

Can I copy all the detected information?

Yes. You can copy the full device info as formatted JSON with one click.

Why does device memory sometimes not appear?

Some browsers and devices do not expose the `deviceMemory` API for privacy reasons, so the field may be unavailable.

Can I refresh the detected information?

Yes. Clicking the 'Refresh Info' button re-detects all browser and device values instantly.

Last Updated

2026-03-10

Related Resources

Related tools

Related category

Device & Browser

Related comparison/alternatives article

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Loading tool…

What It Does

Check your browser name, version, OS, device type, screen resolution, and user agent instantly.

Example

Input: Your current browser session on the device you want to inspect.

Output: A live report covering browser version, OS, viewport, screen details, and user agent data.

Best For

People who need to use browser & device info quickly without installing software.

Confirm which browser version a client is using.

Copy a support-ready browser report.

Check screen and viewport details for responsive QA.

Verify device memory exposure.

Not ideal for: locked-down browsers or devices that block the APIs this workflow depends on.

Key Features

Runs entirely in your browser for a private, on-device workflow.

Keeps files and text on your device with no server upload step.

Includes copy-friendly output for faster reuse in other tools or tickets.

Includes layout controls such as font size, margins, page size, or orientation.

Supports JSON-friendly workflows when structured data needs a cleaner view.

Reports live camera diagnostics such as resolution, frame rate, or mirror mode.

Alternatives

If Browser & Device Info is close but not quite the right fit, these related Nextooly tools cover adjacent device & browser workflows without sending you to another service.

DNS Leak Test (Lite)

Best if you need to check your DNS resolver, WebRTC leaks, and VPN privacy status.

What is my IP?

Best if you need to discover local IP candidates exposed by your browser.

Camera Tester

Best if you need to test your webcam with a live preview, resolution, FPS, snapshots, and mirror mode right in the browser.

FAQ

Does this tool expose or send my device information to any server?

No. All detection happens locally in your browser. Nothing is uploaded, logged, or shared.

What information does the tool display?

It shows your browser name/version, operating system, device type, screen resolution, viewport size, language, pixel ratio, and device memory (if supported).

Why is the User-Agent string shown?

The User-Agent string helps identify your browser and OS. Developers often use it for debugging compatibility issues.

Can I copy all the detected information?

Yes. You can copy the full device info as formatted JSON with one click.

Why does device memory sometimes not appear?

Some browsers and devices do not expose the `deviceMemory` API for privacy reasons, so the field may be unavailable.

Can I refresh the detected information?

Yes. Clicking the 'Refresh Info' button re-detects all browser and device values instantly.