UUUP Tools

Developer Tools

User-Agent Generator — Browser Header Samples

Generate User-Agent strings for desktop, mobile, and common in-app browsers such as WeChat and QQ in your browser. Useful for compatibility testing, crawler samples, and header debugging.

Quick switch→cURL to Fetch
User-AgentHeadersTesting
Quick switch:cURL to FetchHTTP Header Parser

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Quick actions

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Copy this tool URL or open the system share sheet on a supported device.

Use cases

  • Prepare UA strings for mobile layout debugging
  • Build sample headers for common in-app browsers
  • Compare desktop and mobile User-Agent differences

How to use

  1. Choose an operating system and browser or app
  2. Generate the matching User-Agent
  3. Copy it into request headers or test scripts

Example input and output

Environment

iOS WeChat

UA snippet

MicroMessenger...

FAQ

Is this a unique device fingerprint?

No. Output is a common-format sample for testing and debugging, not a real device fingerprint.

Can it detect my current browser UA?

This tool generates samples by environment. For the current page UA, use your browser developer tools Network panel.

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