EasyFileViewer opens a wide range of files, but not all files can be opened. 

EasyFileViewer supports a very wide range of files, however it is simply not possible to support every file type avilable. We have instead aimed to support a wide range of the most common file types. Please find below a partial list of supported file extensions.

.7z
.gz
.ISO
.RAR
.sit
.tar
.tgz
.ZIP
.DLL
.EXE
.HEX
.ASC
.CFG
.INFO
.LOG
.PHP
.TXT
.WMF
.XML
.PPT
.PDF
.EPUB
.RTF
.DOC
.DOCX
.BMP
.GIF
.ICO
.JFIF
.JPE
.JPEG
.JPG
.PNG
.TIF
.TIFF
.CSV
.XLS
.XLSX
.HTM
 .HTML