ページを読み込んでいます
Parse User-Agent strings to identify browser, OS, device type, and rendering engine.
Paste the User-Agent string you want to analyze into the input field, or click "Detect Current Browser" to auto-fill it.
Information about the browser, OS, device type, and rendering engine is displayed in card format.
Use the copy button to copy the parsed result as JSON to your clipboard.
Enter a User-Agent string to see the parsed result
User-Agent Parser is an online tool that analyzes User-Agent strings sent by browsers, displaying information such as browser name and version, OS name and version, device type, and rendering engine in a clear format. All processing happens entirely in your browser—your User-Agent string is never sent to any server.
A User-Agent is a string sent by the browser to a web server that contains information about the browser type, version, operating system, and device. Websites use this information to optimize their content delivery.
No. All parsing is done entirely within your browser. The User-Agent string you enter is never sent to any server.
The tool supports major browsers (Chrome, Firefox, Safari, Edge, Opera, etc.), operating systems, and common bots. If a browser cannot be recognized, it is displayed as "Unknown".
Client Hints is a proposed alternative to the traditional User-Agent string that provides browser information in a more structured way. However, the conventional User-Agent string continues to be widely used.