Loading…

How to use User-Agent Parser

Paste a User-Agent string (your own is pre-filled) and the tool detects the browser and version, OS, device category and layout engine in a summary table.

Frequently asked questions

Why do UA strings mention many browsers?

For historical compatibility most browsers include tokens like Mozilla, AppleWebKit and Safari, so detection relies on the most specific marker.

Can it always identify the device?

It infers Mobile, Tablet or Desktop from known tokens, but heavily customized or spoofed UA strings may report as Unknown.

Is UA parsing reliable for analytics?

It is a useful hint, not a guarantee — UA strings can be spoofed or frozen, so treat the result as best-effort detection.

More Developer Tools

IP Info
IPv4/IPv6 class/type/binary info.
CIDR Calculator
Network range, netmask, hosts.
HTTP Status Codes
Searchable HTTP code reference.
MIME Types
Extension — MIME lookup.
Diff Checker
Line-by-line visual differences.
Regex Tester Advanced
Flags, groups, replace, cheat sheet.
cURL Builder
Build cURL command from form.
cURL to Code
Convert cURL to JS/Python/PHP/Go.
JWT Debugger
Decode JWT segments and verify.
Chmod Calculator
Symbolic — octal permission grid.
Crontab Guru
Visual cron builder + readable output.
Semver Tools
Validate, compare and range-check semantic versions.

← View all Developer ToolsBrowse all 1,100+ tools →