What Is My Browser — Your Browser & Device Details
Instantly see what your browser reveals about you: browser name and version, operating system, screen size, language, IP address, and the full user-agent string.
What We Detect
- Browser name & version
- Operating system
- Screen & window size
- Language & timezone
- Public IP address
Good to Know
What Is My Browser?
Your browser is the software you use to visit websites. It interprets HTML, CSS, and JavaScript to display web pages. Every browser sends a "user-agent" string that identifies itself to servers, along with your operating system, device type, and other system information.
This tool reads your browser's public properties — the same information your browser voluntarily shares with every website you visit. It shows you what websites can see about you, helping with troubleshooting, testing, and understanding your digital footprint.
Why Browser Information Matters
Knowing your browser details is useful for many reasons.
- Troubleshooting website problems. Support teams ask for your browser, OS, and version to diagnose compatibility issues. "It works in Chrome but not Safari" is a common problem.
- Testing responsive design. Designers and developers test sites on different browsers and screen sizes to ensure compatibility. This tool shows your exact viewport and resolution.
- Checking JavaScript and cookies. Some features require JavaScript or cookies to be enabled. This tool confirms their status on your system.
- Understanding compatibility. Older browsers don't support newer web standards. Knowing your version helps understand why some sites don't work or look wrong.
- Security awareness. Outdated browsers have security vulnerabilities. This tool shows your browser version so you can update if needed.
- Ad targeting and analytics. Websites use browser info for analytics, device detection, and targeted content. Understanding this is part of digital literacy.
How SEOLark Browser Checker Works
Load Page
You visit this page in your browser.
Read Browser Info
JavaScript reads your navigator object, screen size, and settings.
Detect Browser
We parse the user-agent string to identify your browser and OS.
Get Your IP
Our server reads your IP address from the request.
Display Results
All details display instantly. Nothing is stored or logged.
What This Tool Detects
| Information | What It Shows |
|---|---|
| Browser Name | The name of your browser (Chrome, Firefox, Safari, Edge, etc.). |
| Browser Version | The version number of your browser. Updates matter for security and compatibility. |
| Operating System | Your computer's OS (Windows, macOS, Linux, Android, iOS, etc.). |
| Device Type | Whether you're on a desktop, mobile phone, or tablet. |
| Screen Resolution | Your monitor's pixel dimensions. Websites adjust layout based on this. |
| Viewport Size | The actual window size (different from screen size if not fullscreen). |
| Language | The language your browser is configured to use. |
| Timezone | Your system's timezone, used for local time display on websites. |
| Cookies Enabled | Whether cookies are allowed (most websites need them for logins, preferences). |
| User-Agent String | The full technical identifier your browser sends. Used for device and OS detection. |
Browser, User Agent, Device, and OS Explained
Browser
The application you use to view websites. Examples: Chrome, Firefox, Safari, Edge.
Operating System
Your computer's core software. Examples: Windows 11, macOS, Linux, Android, iOS.
Device Type
The kind of hardware. Desktop = large screen, Mobile = phone, Tablet = medium screen.
User-Agent
A text string identifying your browser/OS. Sent in every web request. Used for compatibility.
Screen Size
Your monitor's pixel dimensions. Responsive websites detect this and adjust layout.
IP Address
Your network address. Shows your approximate geographic location to websites.
Common Browser Detection Issues
- Browser shows as "Unknown". Your browser sends a non-standard user-agent. This is rare. Check if you're using an uncommon or newer browser.
- Cookies show as "No". Cookies are required for logins, shopping carts, and preferences. Check your browser settings and allow cookies for this site.
- Website says JavaScript is required but it's enabled. Some security software blocks JavaScript. Check your firewall or content blocker settings.
- Screen resolution seems wrong. If you're in fullscreen, high-DPI mode, or using zoom, reported resolution may differ from native. Refresh the page to see live updates.
- Browser version is very old. Outdated browsers lack security patches and modern web features. Update your browser.
- Timezone is incorrect. If your timezone is wrong, check your computer's system settings. Websites rely on this for correct scheduling.
- IP address is unexpected. VPNs and proxies change your IP. If you're using a VPN, the detected IP may be your VPN's exit point, not your actual location.
How to Share Browser Details Safely
Copy Full Report
Copy all your browser details and paste them into a support email. This gives support teams everything they need to help.
Share Selectively
Only share the specific info support asked for. You don't need to share IP address unless they specifically ask.
Check for VPN
If you're using a VPN, your IP shows the VPN's location, not yours. Mention this to support if relevant to the issue.
Share This Page Link
Instead of copying details, you can share this page URL with support. They can ask you to visit and check your own info.
Privacy Note
Browser info is not sensitive, but avoid sharing IP with untrusted sources. The information here is public (websites see it too).
Update if Needed
If your browser is outdated, update it. Most compatibility issues come from old browser versions missing modern features.
Related Utility and SEO Tools
Check Your Browser Details Now
Your browser information is displayed above. Use these details for troubleshooting, testing, and understanding what information your browser shares with websites.
Frequently Asked Questions
Yes, browser information is public. Every website you visit can see your browser name, OS, and user-agent. Your IP address is also visible to websites. Sharing this info for support or testing is completely safe. The only caution: avoid sharing with untrusted sources, though the information itself isn't sensitive.
A user-agent is a text string your browser sends with every request. It identifies your browser, version, OS, and device. Websites use it to detect device type (mobile vs. desktop) and ensure compatibility. Example: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0"
Browsers auto-update in the background. Most modern browsers (Chrome, Firefox, Safari, Edge) update silently. The version shown here is your current runtime version, which may have updated since you last opened the browser. This is good — you're running the latest security patches.
You can't realistically change your OS, device type, or screen resolution. You can change language and timezone in system settings. Advanced users can modify the user-agent via browser extensions, but websites expect consistency. There's no reason to change these settings unless you're testing compatibility.
Screen size is your monitor's full dimensions. Viewport is the actual browser window size. If your window is not fullscreen, viewport is smaller. Responsive websites detect viewport size (not screen size) to adjust layout. Viewport matters more for design testing.
Most websites require cookies for logins, shopping carts, and saving preferences. If cookies are disabled, enable them in your browser settings. You can also allow cookies per-site — many browsers let you block cookies for most sites but allow them for trusted ones.
Approximately, yes. Your IP address can be geolocated to your city or region. If you're using a VPN, the IP shown is your VPN's exit point, not your actual location. If you're on mobile, your provider's network location may vary slightly from your GPS location.