IrfanView PlugIns 64 Bit package offers additional file formats and effects for IrfanView 64 Bit. There is also a 32 Bit version available.

The current list of plug-ins is too long to list here but can be viewed at Irfan's Plugin Page

Here are some of the top IrfanView PlugIns to give you an idea:

Ansi2Unicode - allows IrfanView to read filenames with Unicode characters
B3D - allows IrfanView to read BodyPaint 3D files
BURNING - allows IrfanView to burn slideshow to a CD/DVD/BD (Windows XP SP3 or later required)
CRW - allows IrfanView to read Canon CRW/CR2 files (high-resolution image version)
EMAIL - allows IrfanView to send images as emails
EXR - allows IrfanView to read EXR files
FORMATS - allows IrfanView to read some rare image formats.
(Formats: PSP, G3, RAS, IFF/LBM, BioRAD, Mosaic, XBM, XPM, GEM-IMG, SGI, RLE, WBMP, TTF, FITS, PIC, HDR, MAG, WAD, WAL, DNG, EEF, NEF, ORF, RAF, MRW, DCR, SRF/ARW, PEF, X3F, CAM, SFW, YUV, PVR, SIF and old/retro formats from Amiga, Atari, C64, ZX Spectrum, etc.)
METADATA - allows IrfanView to handle EXIF/IPTC/Comment information from compatible files
MP3 - allows IrfanView to play MP3/MP2/MP1 files
NERO - allows IrfanView to burn slideshow to data or Video CD, using Nero Burning ROM software
RIOT - allows IrfanView to save optimized JPG/GIF/PNG files (RIOT - Radical Image Optimization Tool)
SLIDESHOW - allows IrfanView to create presentations in EXE or SCR format (standalone executable/screen saver)
SOUND_PLAYER - allows IrfanView to play OGG files (Ogg Vorbis)
TOOLS - contains some additional functions/features for IrfanView
VIDEO - allows IrfanView to play many video/sound formats

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