User Agent Parser
Parse browser User-Agent strings to detect OS, browser, device type.
Your current UA is pre-filled.
How to Use
- Paste any User-Agent string into the textarea — your current browser's UA is pre-filled automatically.
- View the parsed result: browser name and version, operating system, device type (Mobile or Desktop), and the raw UA string.
- Copy the result for documentation or debugging purposes.
Frequently Asked Questions
- Is parsing done locally?
- Yes — all parsing happens entirely in your browser with no data sent to any server.
- Can it detect bots or crawlers?
- Basic detection is based on common UA patterns. Sophisticated crawlers that mimic browser UAs may not be identified as bots.
- Why do all browser UAs contain Mozilla/5.0?
- It's a legacy compatibility string. Historically, browsers spoofed each other's UA tokens so servers would not block them. Mozilla/5.0 became a de facto prefix retained by all modern browsers.