Parse browser and system information from user agent strings. Auto-detects your current browser or analyze any user agent string manually.
Advertisement
Advertisement
Advertisement
User Agent String
🌐
Browser
-
💻
Operating System
-
📱
Device Type
-
🔧
Engine
-
🔐Cookies Enabled-
🔅JavaScriptEnabled
💾Local Storage-
🖥Touch Support-
🖳Screen Size-
🌐Language-
Full User Agent String
User agent string will appear here...
🛈Note: User agent parsing is done locally in your browser. The detection is based on pattern matching and may not be 100% accurate for all browsers and devices, especially with modern user agent reduction practices.
What the User Agent Parser Does and Why It Matters
The User Agent Parser breaks down a user-agent string into the pieces that matter: browser name and version, operating system, and device type. Your own browser’s user agent is detected automatically, and you can paste any other string to analyse it.
User-agent strings are dense and easy to misread, so a parser is handy when you are debugging a browser-specific issue from a log line, checking what a visitor’s device reports, or verifying how your own setup identifies itself.
How to Use User Agent Parser
Let the tool detect your current user agent, or paste a string you want to analyse.
Read the parsed browser name and version.
Check the detected operating system and its version.
Note the device type (desktop, mobile, tablet) where available.
Copy any parsed field for a bug report or compatibility note.
Paste a different string to compare another device.
Supported Inputs and Limitations
Supported input
Your browser’s own user-agent string (detected automatically)
Any user-agent string pasted from a log or another device
What you get
Browser name and version
Operating system and version
Device type classification where it can be inferred
Known limitations
User-agent strings can be spoofed or edited, so the result reflects what is claimed, not proven hardware.
Modern browsers freeze or reduce user-agent detail, which limits how precise the parse can be.
Unusual, bot, or in-app browser strings may not map cleanly to a known browser.
Privacy and Security
Parsing happens entirely in your browser; the user-agent string is not uploaded to NovaTools or any server. Your own user agent is information every website you visit already receives, and nothing entered here is stored after you leave the page.
Frequently Asked Questions
Can I trust the detected browser and OS?
It reflects what the user-agent string claims. That is accurate for ordinary browsers but can be deliberately changed, so treat it as a strong hint rather than hard proof of a device.
Is my user agent sent anywhere by this tool?
No. The string is parsed locally in your browser. Note that every site you visit normally receives your user agent as part of standard requests, independent of this tool.
Why is the result less detailed than I expected?
Browsers have been reducing the information in user-agent strings to protect privacy. As a result, exact version or platform details may be generalised or omitted on newer browsers.
Parse and analyze User Agent strings to extract detailed information about browsers, operating systems, and devices.
The User Agent string is sent by your browser with every web request and contains information about your browser type,
version, operating system, and device capabilities.
How to Use
Click Detect My Browser to automatically detect your current browser's information.
Or paste any user agent string in the text area and click Parse UA String.
View parsed information including browser name/version, operating system, and device type.
Check browser capabilities like cookies, local storage, and touch support.
View the full user agent string and copy it if needed.
Click Copy Parsed Info to copy all detected information.
Frequently Asked Questions
What is a User Agent string?
A User Agent string is a text identifier that your web browser sends to websites with every request. It contains information about your browser type, version, operating system, and sometimes device details. Websites use this information to optimize content delivery and compatibility.
Can I change my User Agent?
Yes, most browsers allow you to change or "spoof" your User Agent string through developer tools or extensions. This can be useful for testing websites or accessing content designed for different browsers. However, some websites may block requests with modified User Agents.
Is User Agent reduction affecting detection?
Yes, modern browsers like Chrome are reducing the amount of information in User Agent strings for privacy reasons. Newer APIs like Client Hints are being introduced to replace some functionality. This may cause detection to be less specific for newer browser versions.
Why do some detections show as "Unknown"?
Detection relies on pattern matching against known User Agent formats. New browsers, rare devices, or significantly modified User Agent strings may not match known patterns. Additionally, privacy-focused browsers may intentionally omit identifying information.
Can websites track me using my User Agent?
User Agent strings contribute to browser fingerprinting, which can be used for tracking. However, many users share similar User Agent strings, so it's not a unique identifier on its own. Combined with other data points, it can help distinguish users. Modern browsers are taking steps to reduce this tracking vector.
