IrfanView uses plugins to handle several additional images, video, and sound formats and to add optional functionality such as filter processing or other program features. Ī plugin allows IrfanView to support lossless JPG operations: horizontal or vertical flip, rotation by 90° increments, and cropping. Many of these changes can be applied to multiple images in one operation using batch processing. Images can be adjusted by modifying their brightness, contrast, tint, and gamma level manually or automatically, and by converting them between file formats. Image editing includes crop, resize, and rotate. It supports viewing and saving of numerous file types including image formats such as BMP, GIF, JPEG, JP2 & JPM (JPEG2000), PNG (includes the optimizer OptiPNG APNG can be read), TIFF, raw photo formats from digital cameras, ECW (Enhanced Compressed Wavelet), EMF (Enhanced Windows Metafile), FSH (EA Sports format), ICO (Windows icon), PCX (Zsoft Paintbrush), PBM (Portable BitMap), PDF (Portable Document Format), PGM (Portable GrayMap), PPM (Portable PixelMap), TGA (Truevision Targa), WebP, FLIF (Free Lossless Image Format) and viewing of media files such as Flash, Ogg Vorbis, MPEG, MP3, MIDI, and text files.

IrfanView is specifically optimized for fast image display and loading times. Version 4.44 and older versions were compatible with Windows 95/ 98/ ME and can also be run in Linux under Wine and in macOS using WineBottler. The current version of IrfanView, 4.62, works under all versions of Windows from Windows XP to Windows 11. IrfanView is named after its creator, Irfan Škiljan, from Jajce, Bosnia and Herzegovina, living in Vienna.

It is noted for its small size, speed, ease of use, and ability to handle a wide variety of graphic file formats. IrfanView is free for non-commercial use commercial use requires paid registration. It can also play video and audio files, and has some image creation and painting capabilities. IrfanView ( / ˈ ɪər f æ n v j uː/) is an image viewer, editor, organiser and converter program for Microsoft Windows.

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