What data does the Browser Info Tool show?

It shows your IP address, browser and OS, screen and viewport sizes, GPU renderer, CPU cores, device memory estimate, language and time zone, connection type and RTT, cookie/storage support, and basic feature checks such as Service Worker and WebRTC.

Is any information uploaded or stored?

No—everything runs locally in your browser. Your IP is retrieved from a public IP service, but Starlight Tools does not store or log your browser details.

Why is the browser or OS name different from what I expect?

Browser and OS detection relies on the User-Agent string, which can be spoofed or minimized by privacy features. We show best-effort detection alongside the full UA string so you can verify.

What’s the difference between screen resolution and viewport size?

Screen resolution is your full display pixel dimensions, while viewport size is the current content area of the browser window. The viewport can be smaller due to toolbars, zoom, or non-maximized windows.

Browser Info Tool — IP, User Agent, Device, Screen & Features

Instant browser diagnostics. Private by design—everything runs locally in your browser.

Summary

IPLoading…

BrowserLoading…

OSLoading…

Identity & Environment

User AgentLoading…

User Agent DataLoading…

LanguagesLoading…

Time ZoneLoading…

Local TimeLoading…

UTC TimeLoading…

ProtocolLoading…

Secure ContextLoading…

ReferrerLoading…

Bot/Crawler HintLoading…

Device & Display

ScreenLoading…

ViewportLoading…

Pixel RatioLoading…

Zoom (approx.)Loading…

GPU VendorLoading…

GPU RendererLoading…

Hardware & Network

CPU CoresLoading…

Device Memory (GB)Loading…

Connection TypeLoading…

Effective TypeLoading…

Downlink (Mbps)Loading…

RTT (ms)Loading…

Data SaverLoading…

Web Features

Cookies EnabledLoading…

Local StorageLoading…

Session StorageLoading…

Service WorkerLoading…

WebRTCLoading…

ClipboardLoading…

About the Browser Info Tool

This page reveals what your browser shares with websites and what your device environment looks like to client-side code. For support teams and developers, it gathers the essentials—browser and OS versions, GPU renderer, CPU core count, memory estimate, screen and viewport sizes, time zone and languages, and feature readiness for modern web APIs (Service Worker, WebRTC, clipboard).

We also include network-related hints using the Network Information API when available: connection type, effective bandwidth, round-trip time estimates, and data saver status. Because privacy features and UA reduction are increasingly common, detection is best-effort. We show your full User-Agent string, and—where supported—structured userAgentData to improve accuracy.

Your data stays local. Aside from retrieving your public IP from a widely used IP service, everything is computed in your browser. Use “Copy All” to paste details into a ticket, or “Export JSON” for developer bug reports. If something changes (e.g., window resize, device rotation), hit Refresh to re-measure the viewport and time-sensitive fields.

5 Fun Facts about Browser Info

GPU names reveal the era

Your WebGL renderer often exposes the exact GPU model. A “Mali” hints mobile/embedded, “Intel UHD” is iGPU, while “NVIDIA RTX” shouts discrete power.

Hardware hint

UA strings are shrinking

Modern Chrome/Firefox are reducing User-Agent detail to fight fingerprinting. navigator.userAgentData now carries structured, privacy-preserving hints instead.

Privacy shift

Viewport isn’t your screen

1080p screen doesn’t mean 1080p viewport. Toolbars, zoom, and DPR (retina scaling) change the CSS pixel space sites actually render into.

Layout reality

Network info is a hint

The Network Information API reports “effective” connection type like 4g or slow-2g. It’s advisory only—great for adaptive loading, not billing.

Performance tip

Local only, by design

Most of what’s shown is already accessible to sites; this page just surfaces it for you. Aside from fetching IP, nothing leaves the browser.

Transparency