Security Tools

User Agent Parser

Parse browser, operating system, device, and bot hints from user-agent strings.

At a glance: This user agent parser reads user-agent strings locally and extracts browser, operating system, device type, and bot hints. It is useful for debugging request logs, compatibility reports, and traffic classifications without uploading logs.
Your input is processed locally in your browser and is not uploaded to ByteBench servers.

Loading browser tool.

How to use this tool

  1. Paste or type your input into the tool area.
  2. Choose the mode or options that match your task.
  3. Review validation messages before copying the output.
  4. Use the example button when you want a known-good starting point.

Examples

Chrome on macOS

Input

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 Chrome/120 Safari/537.36

Expected output

Chrome, macOS, desktop.

Common use cases

  • Inspect user-agent strings from logs.
  • Identify likely browser and OS.
  • Spot common bot crawler strings.

When to use this tool

Use this user agent parser page when you need to parse browser, OS, device, and bot hints from user-agent strings quickly during debugging, review, migration, or documentation work and want to keep raw input in your browser session.

If your task shifts, JWT Decoder and Regex Tester are usually the next useful tools.

Input and output expectations

  • Expected input shape: Paste non-production-safe sample data when possible and verify selected algorithm or key mode before running.
  • Typical output: Locally generated hashes, checks, decoded claims, or encrypted envelopes for development workflows.
  • Quick input example: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 Chrome/120 Safari/537.36
  • Quick output example: Chrome, macOS, desktop.

Common mistakes to avoid

  • Treating legacy algorithms like MD5 or SHA-1 as secure defaults.
  • Confusing decode/inspection results with trust validation.
  • Copying sensitive material from shared sessions or recorded screens.

Notes and edge cases

User-agent strings can be incomplete, spoofed, or reduced by modern browsers. Treat parsed results as helpful hints, not verified identity.

For privacy-sensitive data, keep using the tool in a trusted browser session and avoid pasting secrets into shared screens, screenshots, browser extensions, or remote support sessions.

FAQ

Does this user agent parser upload my input?

No. This user agent parser runs in your browser and does not send your input to ByteBench servers.

What input format works best in this user agent parser?

Use clean common user-agent tokens input and run the example first when you want a known-good baseline. If your pasted data came from logs or docs, remove accidental wrappers before validating or converting.

How should I validate results from this user agent parser?

Review the status message, compare output with expected behavior, and run one quick edge-case check. ByteBench helps with utility work, but production-critical output should still be verified in your project pipeline.