The best open source alternative to IrfanView is nomacs. If that doesn't suit you, our users have ranked more than 100 alternatives to IrfanView and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to IrfanView are ImageGlass, JPEGView, qView and Gwenview.
nomacs is a free, open source image viewer, which supports multiple platforms. You can use it for viewing all common image formats including RAW and psd images.
nomacs is not bad, but very limited in comparison with irfanview!
No bloated user interface.
A feature-rich, simple-to-use app seamlessly integrated with a clean, minimal and modern user interface.
Open source, supports more formats than any other viewer
This was pretty good for awhile. But now brings up an extra window every time it is opened to tell you to BUY off the Microsoft Store for updates. On top of that, is taking up to 15 seconds to open a 60kb jpeg. Uninstalled.
Lightweight, minimalist & effective
Lightweight Simple Image Viewer with Slide show feature, Resize and Lossless-cut, Color correction, Rename, Multi-language and more...
More features, less resource-savvy
It's fast and it doesn't eat as many resources as Irfan.
Best free for commercial use alternative to IrfanView. Small, fast, and better than the default Windows image viewer.
Fast and lightweight Qt-based image viewer with support for Windows, macOS, and Linux. Features include multiple format support, customizable interface, GIF playback, high-resolution display compatibility, and efficient navigation through keyboard shortcuts.
IrfanView is not a simple viewer. Take all of what qView does away from IrfanView and you still have a complete program. qView appears to be a good program just not an alternative to IrfanView.
Only processes single images, no way to look at folders or organize.
Offers quick browsing and display of various image formats, basic editing tools like crop, rotate, lossless JPEG manipulation, folder browsing as thumbnails or slideshows, supports XCF, drag-and-drop, metadata viewing, KDE integration, and plugin extensions.
I use it, but it's not as streamlined experience as with IrfanView unfortunately.
PicView is a fast, free and fully customizable picture viewer for macOS and Windows 10/11. It supports virtually all image file types, including (animated) WEBP, (animated) GIF, SVG, AVIF, HEIC, PSD and many others.
Qt5 image viewer with optional video support. Ability to quickly copy / move images to different folders. Can open some extra formats (JPEG-XL, AVIF, APNG, HEIF/HEIC, RAW) via third-party image plugins.
gThumb is an image viewer and browser for the GNOME Desktop. It also includes an importer tool for transferring photos from cameras.
It lacks the simplicity and the 'just-works' feel of Irfan. gThumb keeps resizing images, doesn't respond logically to a scroll wheel and has an overal annoying interface.
gThumb does not have some of the more important and convenient features found in IrfanView.
Desktop app for photo sorting on Windows & Mac, managing JPG+RAW files. Sort photos into folders using keys, providing easy navigation and clean interface without deletion, ensuring a focused experience with flexible viewing, safe storage, and no fluff.
An image viewer and browser utility - primarily for Linux Mint. Pix is part of the X-Apps project, which aims at producing cross-distribution and cross-desktop software.
Eye of GNOME is the official image viewer for the GNOME Desktop environment. With it, you can view single image files, as well as large image collections. The Eye of GNOME supports a variety of image file formats.
It is very bad and it is only for GNOME
Waterfall-style image viewer for macOS, offering a smooth and immersive browsing experience.
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nomacs is so far the best contender to irfanview. You can go through images and delete or keep. Scale and cut. Having some trouble with paste, but I hope that is a setting. Or an yet undiscovered feature.