User-Agent Lookup

User-Agent Lookup

Free

Free online browser User-Agent lookup tool, automatically detects and parses browser type, version, operating system, device model and other information. Supports simulated browser UA generation, suitable for frontend development debugging, device compatibility testing and other scenarios.

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About User-Agent Lookup

Free online browser User-Agent lookup tool, automatically detects and parses browser type, version, operating system, device model and other information. Supports simulated browser UA generation, suitable for frontend development debugging, device compatibility testing and other scenarios.

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User Guide

Key Features
  • Browser User-Agent lookup: automatically detects and parses your current browser's UA string, showing browser name/version, rendering engine, OS, device model, screen resolution, CPU cores, and browser features (WebGL, WebSocket, and more).
  • Built-in "Simulator" generates a custom User-Agent by platform, browser, version, and device type, with one-click Copy, Copy All, and Export. Ideal for frontend debugging, device compatibility testing, and inspecting request headers.
How to Use
  1. Open the tool page — no download or installation, and no sign-up required.
  2. The "Local Info" tab shows your current browser's parsed details by default. To generate a UA, switch to the "Simulator" tab, pick the platform/browser/version/device type, then click "Generate User-Agent".
  3. In the result area, click "Copy" for a single field or "Copy All" to copy everything, or click "Export" to save. Click "Refresh" to re-detect local info.
Important Notes
  • This tool is completely free and needs no registration.
  • All detection and generation run locally in your browser; your data is never uploaded.

Frequently Asked Questions

What is User-Agent Lookup?

Free online browser User-Agent lookup tool, automatically detects and parses browser type, version, operating system, device model and other information. Supports simulated browser UA generation, suitable for frontend development debugging, device compatibility testing and other scenarios.

How do I use User-Agent Lookup?

Open the tool page — no download or installation, and no sign-up required. The "Local Info" tab shows your current browser's parsed details by default. To generate a UA, switch to the "Simulator" tab, pick the platform/browser/version/device type, then click "Generate User-Agent". In the result area, click "Copy" for a single field or "Copy All" to copy everything, or click "Export" to save. Click "Refresh" to re-detect local info.

What should I know before using User-Agent Lookup?

This tool is completely free and needs no registration. All detection and generation run locally in your browser; your data is never uploaded.

Is User-Agent Lookup free to use?

Yes, User-Agent Lookup is completely free. No download or installation required — it runs right in your browser.