A ch4 file extension is related to the Charisma and used for its presentation files.

There are 2 other file types using
the CH4 file extension!

empty icon.ch4 - WSxM data

empty icon.ch4 - ZX Spectrum font

Detailed description

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CH4 file extension - Charisma presentation

What is ch4 file? How to open ch4 files?

File type specification:

Document file type icon Document file type

The ch4 file extension is associated with the Charisma, a presentation software. The ch4 file stores presentation created in the Charisma.

The Charisma seems to be obsolete product without support from developer.

Help how to open:

Use Charisma to work with *.ch4 files.

How to convert:

Possibly can be converted like any other presentations.

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