Files with ET3 extension can be found as recorded delivery data files from Hungarian e-Szigno program.

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ET3 file extension - e-Szigno recorded delivery data

What is et3 file? How to open et3 files?

File type specification:

Various data file type icon Various data file type

The ET3 file extension is mainly related to e-Szigno, an electronic signature creation software used in Hungary. An *.et3 file contains recorded delivery data.

Help how to open ET3 files:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert file with extension ET3:

As far as we know, this .et3 file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

Related links:

e-Szigno website

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