User-Agent Parser
Parses user-agent strings into browser and version, rendering engine, operating system and device class — yours is pre-filled — and explains why every browser claims to be Mozilla.
Runs 100% in your browser — nothing you paste leaves your device.
Read the full guide to this tool
Notes
- User agents are historically dishonest: Chrome claims Mozilla, AppleWebKit and Safari all at once, for compatibility with decades of sniffing scripts.
- Modern Chrome freezes most of the UA string; use client hints or feature detection instead of UA sniffing in new code.
- Runs 100% in your browser — nothing you paste leaves your device.
Explore the idea
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