How to use

System requirements

We recommend the following browsers to use our site comfortably and safely.


  • Microsoft Internet Explorer 11.0
  • Microsoft Edge, latest version
  • Firefox, latest version
  • Google Chrome, latest version
  • Safari, latest version

Smartphone / Tablet

  • iOS standard browser, latest version
    • Safari, Google Chrome, latest version
  • Android 5.0-, standard browser
    • Google Chrome, latest version


Our dedicated ebook viewer screen is operated on HTML5.
To use it, a browsing environment (OS / browser) that supports HTML5 is required on your computer or mobile device including smartphone and tablet.
If you experience any problem with viewing, please check if your browsing environment supports HTML5. Please contact / check with the provider of your OS / browser about the HTML5 compatibility of your browsing environment. Please note that we are unable to help you with any inquiries regarding problems with viewing or the HTML5 compatibility of your browsing environment.