XnViewMP - integration - file association

user0 · Post by **user0** » Fri Apr 07, 2023 5:49 am

How to Set File Associations in Windows 10/11

1. Register app in the system

Default registration
- Installer version
  app will automatically register itself in registry during installation process
- Portable version
  you have to manually register app in the system
  - run XnViewMP
  - press 'Register application' button (in Settings > Integration)
by default app registers itself for the following filetypes:
Code: Select all
```
.arw
.avif
.bmp
.cr2
.cr3
.crw
.cur
.dds
.dng
.emf
.exr
.gif
.hdr
.heic
.heif
.ico
.iff
.jfif
.jif
.jp2
.jpc
.jpe
.jpeg
.jpg
.jxl
.jxr
.nef
.pbm
.pcd
.pcx
.pef
.pgm
.pic
.png
.ppm
.psd
.raf
.ras
.rle
.rw2
.sld
.srf
.tga
.tif
.tiff
.webp
.wmf
.xbm
.xpm
```

(optional) add extra filetypes
To properly associate app with additional filetypes, the corresponding registry keys must be created in registry (in addition to 'default' keys).
Example for two test extensions (.abc and .xyz):

Code: Select all

Windows Registry Editor Version 5.00


; --- 1. Declare File Associations 
[HKEY_LOCAL_MACHINE\SOFTWARE\XnViewMP\Capabilities\FileAssociations]
".abc"="XnViewMP.abc"
".xyz"="XnViewMP.xyz"

; --- 2. Register Application Capabilities
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Applications\xnviewmp.exe\SupportedTypes]
".abc"=""
".xyz"=""

; --- 3. Define ProgIDs
[HKEY_LOCAL_MACHINE\Software\Classes\.abc]
@="XnViewMP.abc"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XnViewMP.abc\DefaultIcon]
@="C:\\Program Files\\XnViewMP\\FileIcons\\generic.ico"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XnViewMP.abc\shell\open\command]
@="\"C:\\Program Files\\XnViewMP\\xnviewmp.exe\" \"%1\""


[HKEY_LOCAL_MACHINE\Software\Classes\.xyz]
@="XnViewMP.xyz"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XnViewMP.xyz\DefaultIcon]
@="C:\\Program Files\\XnViewMP\\FileIcons\\generic.ico"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XnViewMP.xyz\shell\open\command]
@="\"C:\\Program Files\\XnViewMP\\xnviewmp.exe\" \"%1\""

2. Set File Associations
use any method to set associations:

Windows
manually assign each image extension, one by one
- Settings > Apps > Default apps
- File Explorer > Context menu > Open with

3rd party app
Windows 11 introduced much stricter enforcement of default app associations compared to Windows 10 and some methods may no longer work.

Types

SetUserFTA 1.8.3/4 (free Personal edition)
allows to set associations in batch

Code: Select all

SetUserFTA.exe xnAssociations.txt

Code: Select all

.arw, XnViewMP.arw
.avif, XnViewMP.avif
.bmp, XnViewMP.bmp
.cr2, XnViewMP.cr2
.cr3, XnViewMP.cr3
.crw, XnViewMP.crw
.cur, XnViewMP.cur
.dds, XnViewMP.dds
.dng, XnViewMP.dng
.emf, XnViewMP.emf
.exr, XnViewMP.exr
.gif, XnViewMP.gif
.hdr, XnViewMP.hdr
.heic, XnViewMP.heic
.heif, XnViewMP.heif
.ico, XnViewMP.ico
.iff, XnViewMP.iff 
.jfif, XnViewMP.jfif
.jif, XnViewMP.jif
.jp2, XnViewMP.jp2
.jpc, XnViewMP.jpc
.jpe, XnViewMP.jpe
.jpeg, XnViewMP.jpeg
.jpg, XnViewMP.jpg
.jxl, XnViewMP.jxl
.jxr, XnViewMP.jxr
.nef, XnViewMP.nef
.pbm, XnViewMP.pbm
.pcd, XnViewMP.pcd
.pcx, XnViewMP.pcx
.pef, XnViewMP.pef
.pgm, XnViewMP.pgm
.pic, XnViewMP.pic
.png, XnViewMP.png
.ppm, XnViewMP.ppm
.psd, XnViewMP.psd
.raf, XnViewMP.raf
.ras, XnViewMP.ras
.rle, XnViewMP.rle
.rw2, XnViewMP.rw2
.sld, XnViewMP.sld
.srf, XnViewMP.srf
.tga, XnViewMP.tga
.tif, XnViewMP.tif
.tiff, XnViewMP.tiff
.webp, XnViewMP.webp
.wmf, XnViewMP.wmf
.xbm, XnViewMP.xbm
.xpm, XnViewMP.xpm

xnAssociations_txt.zip

general
XnViewMP - integration - file association (current post)

suggestions
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Settings - integration - improve win file associations (1.8.4)