What is an ENP file?
The .ENP file extension has multiple distinct uses across different software environments. Most commonly, an .ENP file is an EndNote Preferences File created by EndNote, the reference management software from Clarivate. These files store customized settings for bibliographies and citations. However, the .ENP extension is also used for Electronic Nautical Publication Permits by the UK Hydrographic Office ADMIRALTY, ENVI Project Files for geospatial data by L3Harris Geospatial, audio system configuration projects for EclerNet Manager, and encrypted file containers by tools like Entrust or AxCrypt.
How to open ENP files?
Because the .ENP extension applies to multiple completely different formats, you first need to identify which type of file you have. If it is an EndNote file, you open it within the EndNote application. If it is an encrypted container, you must use the specific encryption software, such as Entrust or EncryptOnClick, and provide the correct password. viewer.online/enp can analyze .ENP files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available.
Best practices and troubleshooting
Do not rename the file extension. Renaming an .ENP file to a common format like .TXT will not convert the data and may corrupt the file. If you cannot open the file, check the file size and context. Very small files are often preferences or permits, while large files might be encrypted containers or complex project files. Never force-open an encrypted .ENP file in a standard text editor, as you will only see garbled, unreadable text.
Software and tools
To open the files natively, you will need the specific software that created them. Key programs include EndNote by Clarivate, ENVI for geospatial raster analysis, ADMIRALTY e-Reader for nautical publications, and EclerNet Manager for audio systems.
Summary
Since .ENP has multiple possible meanings, we recommend using viewer.online/enp to identify the actual format of your file. viewer.online/enp is highly useful for identifying, inspecting, and understanding .ENP files without installing software or dealing with compatibility problems.