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Yauaa: Yet Another UserAgent Analyzer

This is a java library that tries to parse and analyze the useragent string (and when available the User-Agent Client Hints) and extract as many relevant attributes as possible.

Works with Java, Scala, Kotlin and provides ready for use UDFs for several processing systems.

The full documentation can be found here https://yauaa.basjes.nl


HIGH Profile release notes:

These are only the highlights for the last few releases, the full changelog can be found here.

NEXT RELEASE

  • Analyzer:
    • Improve handling of invalid ClientHints
  • New/improved detections:
    • Ecosia browser
    • Phoenix browser (has very bad ClientHints)
    • Lookup Amazon device tags from ClientHints
    • Report the agent version ‘NULL’ as ‘??’
    • Handle Edge case of unknown device names

Version v7.25.0

  • New/improved detections:
    • Mitigate the invalid ClientHints given by Opera GX 2.1

Version v7.24.0

  • Analyzer:
    • Allow cloning an instance and share the configuration (reducing memory footprint)
  • New/improved detections:
    • CamScanner is not a robot
    • NextCloud app
  • Build:
    • Update commons-text required shading to make it work.
    • Build under Java 21 and also run all tests with Java 21

Donations

If this project has business value for you then don’t hesitate to support me with a small donation either via Github Sponsors or Paypal.


License

Yet Another UserAgent Analyzer
Copyright (C) 2013-2024 Niels Basjes

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.