User Agent Parser is a free, browser-based web development and coding tool. Parse user agent strings to identify browser, OS, device type, and rendering engine.
Web developers, software engineers, and DevOps professionals use User Agent Parser every day to save time and skip the overhead of desktop software or paid services. No installation, no account, and no technical knowledge required — just paste your content into User Agent Parser and get results in seconds. Your files never leave your browser — full privacy by design.
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How to use User Agent Parser
1
Enter user agent
Paste or auto-detect your UA.
2
Parse
Identify browser, OS, and device.
3
View details
See parsed components.
Use Cases
- Debugging and validating data formats during API development
- Preparing test fixtures and sample payloads
- Encoding and decoding data for integrations and authentication flows
- Formatting and linting configuration files before deployment
Key Benefits
- 100% free with no usage limits, watermarks, or hidden fees
- No account or sign-up required — use it instantly
- Works in all modern browsers on desktop, tablet, and mobile
- Privacy-first: all processing runs locally, files never leave your device