The best Image Editor alternative to nomacs is IrfanView. It's not free, so if you're looking for a free alternative, you could try IrfanView or XnView MP. If that doesn't suit you, our users have ranked more than 100 alternatives to nomacs and many of them are Image Editors so hopefully you can find a suitable replacement. Other interesting Image Editor alternatives to nomacs are FastStone Image Viewer, XnView Classic, Gwenview and JPEGView.
Compact and efficient image application offering viewing, editing, and conversion with batch processing, multi-language support, plugin extensibility, and ad-free operation suitable for Windows and portable use.
Comprehensive photo management software for viewing, batch converting, editing and resizing images and creating thumbnail sheets.
A feature-rich, simple-to-use app seamlessly integrated with a clean, minimal and modern user interface.
Fast image browser and editor for Windows with robust support for browsing, editing, and conversion. Features red-eye removal, resizing, enhanced EXIF access, and musical slideshows with over 150 effects.
XnView Classic is an efficient image viewer, browser and converter for Windows with built-in support for over 500 image formats.
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.
Lightweight Simple Image Viewer with Slide show feature, Resize and Lossless-cut, Color correction, Rename, Multi-language and more...
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.
Offers organization, viewing, and editing tools for digital images, supports over 700 RAW formats, enables metadata embedding and syncing, dynamic category and keyword filters, workflow optimizations, non-destructive edits, detailed image preview, and sharing options.
gThumb is an image viewer and browser for the GNOME Desktop. It also includes an importer tool for transferring photos from cameras.
Native macOS app for viewing, annotating, and editing images and PDFs, featuring tools for cropping, rotating, resizing images, rearranging pages, full-screen viewing, markup, document merging, batch conversion, and export in multiple formats.
Photos is a digital photograph manipulation application developed by Apple, intended to be less complex than its predecessor iPhoto .
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XNview-MP (not listed) might be a good alternative. And it's multi-platform... I do use it, it has a lot of features, but is not small or simple.