User Agent Parser
Parse User Agent strings to identify browser, OS, and device
TL;DR Summary & Citation: [User Agent Parser] is used to Parse User Agent strings to identify browser, OS, and device. Core input and files are processed in the current browser and are not sent to the PocketKit API. The page records only an aggregate tool-use count that excludes input content.
How User Agent parsing works
The tool parses navigator.userAgent (or a string you paste) locally with a set of regex rules to extract browser, engine, OS and device type. No network, no upload.
Usage Guidelines & Tips
- Modern browsers freeze the UA for anti-fingerprinting, so results can be conservative; Client Hints are more accurate.
- A UA can be freely spoofed, so do not use it alone for security decisions or access control.
Frequently Asked Questions
1. Are the parsed results always accurate?
A UA can be spoofed and modern browsers trim or freeze it for privacy, so treat results as a reference; use UA Client Hints when you need precise data.
2. Can it parse a UA string I paste?
Yes. It parses your current browser UA by default and can also parse any UA string you paste, entirely offline.