About this tool
Detect the browser, engine, operating system and device type from any user-agent string using simple heuristics, entirely in your browser.
Frequently asked questions
Where does the default value come from?
It is prefilled with your own browser's user-agent string, which you can replace with any other.
Is the detection always exact?
It uses lightweight regex heuristics, so unusual or spoofed strings may be classified as unknown.