Browser Info
Instantly detect your browser, OS, screen, and device details. View your full User-Agent string and copy all info with one click.
What Is a Browser Info Tool?
A browser info tool reads your browser's navigator object and other Web APIs to display detailed information about your current browsing environment. This includes the browser name and version, operating system, screen dimensions, viewport size, device pixel ratio, language settings, privacy preferences, and network connection type. It's useful for web developers debugging cross-browser issues, support teams gathering client environment details, and anyone curious about what their browser reveals.
How to Use Browser Info
- Open the Tool — All information is detected automatically when the page loads
- Review Details — Browse the grid showing browser, OS, resolution, viewport, pixel ratio, language, cookies, DNT, touch support, and connection type
- View User-Agent — The full User-Agent string is displayed at the bottom for reference
- Copy Info — Click "Copy User-Agent" for just the UA string, or "Copy All Info" to get every detail in a formatted text block
Why Use This Browser Info Tool?
- Instant Detection — No buttons to click; information appears immediately on load
- Comprehensive — Shows 10+ data points including lesser-known details like Do Not Track and connection type
- One-Click Copy — Copy all details at once for pasting into bug reports, support tickets, or documentation
- Developer Friendly — Output uses monospace formatting for easy reading and comparison
- Privacy Safe — Everything is detected locally. No data is sent to any server or third party
- No Installation — Works directly in any modern browser without plugins or extensions
FreeToolbox vs Other Browser Info Tools
| Feature | FreeToolbox | whatismybrowser.com | browserleaks.com |
|---|---|---|---|
| Instant Load | Yes | Yes | Yes |
| Connection Type | Yes | No | Yes |
| Touch Detection | Yes | No | Yes |
| Copy All Info | One click | No | No |
| Privacy (No Tracking) | Client-side only | Tracks visitors | Tracks visitors |
| Ads | Minimal | Heavy | Moderate |
FAQ
What is a User-Agent string?
A User-Agent string is a text identifier that your browser sends with every web request. It contains information about your browser name, version, operating system, and rendering engine. Websites use it to serve compatible content, and developers use it for debugging and analytics.
Why does my browser show Windows 10/11 instead of just one?
Microsoft did not change the Windows NT version number between Windows 10 and Windows 11. Both report as 'Windows NT 10.0' in the User-Agent string, making it impossible to distinguish them from the UA alone without using the newer User-Agent Client Hints API.
What is Device Pixel Ratio?
Device Pixel Ratio (DPR) is the ratio between physical pixels and CSS pixels on your screen. A DPR of 2x means each CSS pixel is rendered using 2x2 physical pixels (common on Retina/HiDPI displays). This helps developers serve appropriately sized images.
What does Do Not Track mean?
Do Not Track (DNT) is a browser setting that sends a signal to websites requesting them not to track the user. However, compliance is voluntary — most websites ignore it. It shows 'N/A' if your browser doesn't support or hasn't configured this setting.
Is my information being collected?
No. This tool runs entirely in your browser using JavaScript APIs. No data is transmitted to any server. You can verify this by checking your browser's network tab — no requests are made when using this tool.