User-Agent Parser - Online UA String Parsing Tool

When to use

Developers and support staff often need to quickly identify the browser, OS, and device from a User-Agent string to debug or tailor content, but manual parsing is error-prone and time-consuming.

How to use

1. 1Open the tool in your browser.
2. 2Either click 'Detect Current UA' to auto-fill your browser's User-Agent, or paste a User-Agent string into the text area.
3. 3Optionally, select an example from the 'UA Examples...' dropdown to load a sample.
4. 4Click the 'Parse' button to analyze the string.
5. 5View the summary cards and detailed table showing browser, engine, OS, device type, CPU architecture, and bot status.
6. 6Click any field in the detailed table to copy its value to the clipboard.

Input & output

Input: a User-Agent string (either pasted, auto-detected, or chosen from examples). Output: parsed details including browser name/version, engine name/version, OS name/version, device type (desktop/mobile/tablet), CPU architecture, and whether it's a bot or mobile device.

Who it's for

Web developers, QA testers, and support personnel who need to identify the client environment from a User-Agent string for debugging or analytics.

FAQ

What does the tool detect from a User-Agent string?

It extracts browser name and version, rendering engine and version, operating system and version, device type (desktop, mobile, tablet), CPU architecture, and flags for bots and mobile devices.

Can I use this tool to check my own browser's User-Agent?

Yes, click the 'Detect Current UA' button to automatically fill in your current browser's User-Agent string and then parse it.

Is the tool accurate for all User-Agent strings?

It uses pattern matching to identify common browsers and bots. While it handles many standard cases, some obscure or non-standard strings may not be fully recognized, and results may be 'Unknown'.

Does the tool send my User-Agent string to a server?

No, it is a pure front-end tool. All parsing is done locally in your browser, so your data is not uploaded anywhere.