Tika

"The Apache Tika™ toolkit detects and extracts metadata and text from over a thousand different file types (such as PPT, XLS, and PDF). All of these file types can be parsed through a single interface, making Tika useful for search engine indexing, content analysis, translation, and much more. You can find the latest release on the download page. Please see the Getting Started page for more information on how to start using Tika.

The Parser and Detector pages describe the main interfaces of Tika and how they work.

• Supported Document Formats
  • HyperText Markup Language
  • XML and derived formats
  • Microsoft Office document formats
  • OpenDocument Format
  • iWorks document formats
  • Portable Document Format
  • Electronic Publication Format
  • Rich Text Format
  • Compression and packaging formats
  • Text formats
  • Feed and Syndication formats
  • Help formats
  • Audio formats
  • Image formats
  • Video formats
  • Java class files and archives
  • Source code
  • Mail formats
  • CAD formats
  • Font formats
  • Scientific formats
  • Executable programs and libraries
  • Crypto formats
  • Database formats
• Full list of Supported Formats

https://tika.apache.org/

" A Python port of the Apache Tika library that makes Tika available using the Tika REST Server."

https://github.com/chrismattmann/tika-python