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Application Category & Support
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DRMX File Extension

The DRMX file stands for Drumlin fully secured PDF document file format that has been launched by Drumlin Security. The DRMX file is known as the strongly encrypted versions of PDFs containing encoded information with built-in permissions and digital rights management. When the user downloads or receives DRMX file, it will contain the controls to determine whether the file can be viewed/ copied or printed. The owner and publisher of the file set these permission rights.

Applications Supported


  • Drumlin PDF Reader
  • Javelin PDF Reader

Mac OS

  • Javelin PDF Reader
  • DRMX file is associated with PDF File Category


The MIME type of a DRMX file is:

  • Application/octet-stream
  • Hexadecimal: 7B 44 52 4D 50 44 4B 7D

Common Errors

Inability to access DRMX file
The user may not be able to open the DRMX file stored in the system. One solution is to install a suitable application that can open DRMX file. If the user cannot still open the file, they can check:Whether the DRMX file is damaged or infected, whether the file is incorrectly linked with registry entries, whether installed application support DRMX file type, whether the extension has been removed accidentally.

Issue in viewing DRMX file
The user may face several issues while viewing the DRMX file like DRMX file associated with wrong application, accidental deletion of the description of DRMX files from Windows Registry.