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device-info

Device info shows what your browser exposes to any website you visit — OS, browser engine + version, screen resolution, GPU (via WebGL renderer string), language, timezone, color depth, supported features (touch, WebGL, WebRTC). Useful for privacy audits ("what fingerprintable data does my browser leak?"), debugging cross-device bugs, and understanding why a site renders differently on your device. The ZTools Device Info tool reads only standard JavaScript APIs — no probing, no upload, no tracking.

Use cases​

Privacy audit your browser​

See what fingerprintable data your browser exposes. Higher entropy = easier to track across sites.

Debug a "works on my machine" bug​

A bug only reproduces on a specific OS / browser / GPU combo. Tool exposes the exact env.

Verify a VPN / privacy extension is working​

Tool shows reported timezone / locale / IP-derived country. If they match your VPN region, the protection is active.

Quick reference for support tickets​

Copy device info into a bug report — saves the engineer from asking "what browser version?"

How it works​

  1. Page loads — JavaScript reads navigator, screen, Intl, performance APIs.
  2. Display — Sections: OS / browser, screen, language / timezone, GPU, network, supported features.
  3. Privacy info — Each value tagged with how fingerprintable it is. High-entropy values (GPU string, timezone + locale combo) flag.
  4. Copy — One-click copy of all info as JSON or formatted text — paste into bug reports.

Examples​

Input: Chrome on macOS

Output: OS: macOS 14.5; Browser: Chrome 130; Screen: 2880×1800 @ 2x; GPU: Apple M2 Pro; Language: en-US; Timezone: America/New_York.

Input: Firefox with privacy add-ons

Output: Many fields show "blocked / spoofed". Reduces fingerprint surface.

Frequently asked questions​

Is this all websites can see?

It's the obvious data. Websites can also probe rendering quirks (Canvas fingerprinting), audio context, font availability, behavioral signals — these aren't shown here. For a deeper audit, use AmIUnique.org / EFF's Cover Your Tracks.

Why does my GPU show as "Apple GPU"?

Some browsers redact the precise GPU model to reduce fingerprinting. Safari especially. Chrome and Firefox usually expose the full string.

Can I block this info?

Privacy extensions (uBlock, Privacy Badger) and browser settings (Firefox's resistFingerprinting, Brave's shields) can spoof or block many fields.

Privacy?

Tool reads locally and shows the values. Nothing is uploaded.

Tips​

  • Run the same audit in different browsers — entropy varies dramatically. Tor Browser leaks the least; Chrome the most.
  • For bug reports, screenshot or copy the full JSON — saves engineers from asking 10 questions.
  • After enabling a privacy extension, re-run to verify the change took effect.
  • For a comprehensive fingerprint audit, also visit AmIUnique.org — combines this info with rendering / audio / WebRTC checks.

Try it now​

The full device-info runs in your browser at https://ztools.zaions.com/device-info — no signup, no upload, no data leaves your device.

Open the tool ↗

Last updated: 2026-05-06 · Author: Ahsan Mahmood · Edit this page on GitHub