8BF_Filters - (version 3.97): allows IrfanView to load Adobe Photoshop 8BF filters.
Ansi2Unicode - (version 0.2.3): allows IrfanView to read filenames with Unicode characters
AWD - (version 3.99): allows IrfanView to read Artweaver files
B3D - (version 4.22): allows IrfanView to read BodyPaint 3D files
BURNING - (version 4.25): allows IrfanView to burn slideshow to a CD. Windows XP or later required, Nero option can burn Data DVD and VCD
CADImage - (version 7.2.1.7): allows IrfanView to read DXF/DWG/HPGL/CGM/SVG files (Shareware, third party plugin).
CRW - (version 4.22): allows IrfanView to read Canon CRW/CR2 files (high resolution image version)
DICOM - (version 4.20): allows IrfanView to read Dicom formats (DCM, ACR, IMA)
DJVU - (version 4.22): allows IrfanView to read DJVU format
EA_FSH - (version 1.12): allows IrfanView to read/write EA Sports FSH files
ECW - (version 4.23): allows IrfanView to read/write ECW files (Enhanced Compressed Wavelet)
EFFECTS - (version 4.27): contains image effects
EMAIL - (version 3.85): allows IrfanView to send images as emails
EXIF - (version 4.27): allows IrfanView to show EXIF information from JPG files
EXR - (version 4.22): allows IrfanView to read EXR files
FILTER_FACTORY - (version 3.85): allows IrfanView to use Filter Factory 8BF files (Photoshop PlugIns)
FLASH - (version 2.2.0.1): allows IrfanView to read Flash/Shockwave/FLV format
FORMATS - (version 4.27): 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)
FPX - (version 4.22): allows IrfanView to read FlashPix files
FTP - (version 4.00): allows IrfanView to transfer files from Thumbnails window using FTP
FILTERS_UNLIMITED - (version 3.20): allows IrfanView to use Filters Unlimited files (Photoshop PlugIns and filters)
HDP - (version 4.26): allows IrfanView to read HDP/WDP (Microsoft HD Photo) files
ICONS - (version 3.85): additional icons for IrfanView file associations
ICS - (version 4.22): allows IrfanView to read ICS files (Image Cytometry Standard)
IMPDF - (version 0.75): allows IrfanView to save PDF files (Portable Document Format)
IPTC - (version 4.27): allows IrfanView to show/edit IPTC and Comment information from JPG files
IV_PLAYER - (version 3.35): allows IrfanView to play video/sound/audio-cd files using Windows Media Player
JPEG2000 - (version 4.26): allows IrfanView to read/write JPEG 2000 files
JPEG_LS - (version 0.6.3.1): allows IrfanView to read/write JPEG-LS files
JPG_TRANSFORM - (version 4.27): allows IrfanView to support lossless JPG operations
JPM - (version 4.22): allows IrfanView to read/write JPM files
KDC - (version 1.54): allows IrfanView to read Kodak Digital Camera files
LCMS - (version 4.25): allows IrfanView to use color management
LDF - (version 4.22): allows IrfanView to read/write LuraDocument LDF files
LOGO-MANAGER - (version 3.50): allows IrfanView to read Nokia Logo Files: NLM/NOL/NGG/NSL/OTB/GSM
LWF - (version 4.22): allows IrfanView to read/write LuraWave LWF files
MED - (version 3.30): allows IrfanView to play MED/OctaMED audio files
MNG - (version 4.22): allows IrfanView to read/play MNG/JNG files
MP3 - (version 3.90): allows IrfanView to play MP3/MP2/MP1 files
MPG - (version 4.22): allows IrfanView to extract frames from MPEG files
MRC - (version 3.70): allows IrfanView to read MRC files
MR-SID - (version 4.22): allows IrfanView to read LizardTech's SID files
NERO - (version 4.20): allows IrfanView to burn slideshow to data or Video CD, using Nero Burning ROM software
OCR_KADMOS - (version 4.4p): adds OCR features to IrfanView
PAINT - (version 0.4.13.67): allows IrfanView to to paint lines, circles, arrows, straighten image etc.
PHOTO-CD - (version 3.00): allows IrfanView to read Kodak PCD files (high resolutions)
PNGOUT - (version Jan 18 2006): allows optimized PNG saving
POSTSCRIPT - (version 4.27): allows IrfanView to read EPS/PS/PDF files (using Ghostscript)
QUICKTIME - (version 4.22): allows IrfanView to play/read Apple Quicktime files
REAL-AUDIO - (version 3.37): allows IrfanView to play Real-Audio RA files
REGIONCAPTURE - (version 2.00): allows IrfanView to capture a rectangle area of the screen
RIOT - (version 0.3.3.0): allows IrfanView to save optimized JPG/GIF/PNG files
SFF - (version 4.22): allows IrfanView to read SFF (Structured Fax) Files
SLIDESHOW - (version 4.25): allows IrfanView to create presentations in EXE or SCR format (standalone executable/screen saver)
SOUND_PLAYER - (version 3.80): allows IrfanView to play OGG files (Ogg Vorbis)
VIDEO - (version 4.22): allows IrfanView to play video/sound files (AVI, MPG/MPEG, WAV, MOV, MID/RMI, AIF, AU/SND, WMA, WMV)
VTF - (version 3.99): allows IrfanView to VTF (Valve Texture) files
WBZ - (version 0.99): allows IrfanView to read WebShots (WBZ/WBC/WB1) files
WSQ - (version 2008.12.16): allows IrfanView to WSQ (Wavelet Scaler Quantization) files

fix a bug in the handling of very high resolution images.