XnView
XnView MP/Classic is a free Image Viewer to easily open and edit your photo file. The Image Viewer supports all major image formats (JPEG, TIFF, PNG, GIF, WEBP, PSD, JPEG2000, OpenEXR, camera RAW, HEIC, PDF, DNG, CR2). As Image Viewer you have features like color adjusting, image resizer, cropping, screen capture, metadata editing (IPTC, XMP) and much more. With its easy-to-use explorer-like interface, XnView MP allow you to quickly view your images and photos, but also to make image management. You have features like batch rename, batch converter, duplicate image finder, image compare, but you can also create contact sheets, slideshow.
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Handy Viewer
Handy Viewer provides an all-in-one solution for photo viewing and editing.
Handy Viewer boasts a user-friendly interface that offers an effortless experience right from the start. All required plug-ins and codecs are included, eliminating the need for cumbersome downloads. Navigating through folders and finding specific images is a breeze thanks to hotkey support and three different viewing modes you can choose from.
One standout feature of Handy Viewer is its extensive format compatibility. Whether it's JPEG, TIFF, PNG, or even the latest HEIC image format, Handy Viewer will open and display nearly any image file format. Moreover, Handy Viewer shines when it comes to video playback as well. In total, more than 150 formats are supported.
Photo editing and ability to apply effects is another important feature of this program. Handy Viewer allows you to resize, crop and rotate your images. The brightness, contrast, saturation, gamma can be configured as well.
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Picview
Picview is an image viewer for macOS with a nice minimal modern user interface. Picview works great with JPEG, HEIC, PSD, RAW, WEBP, PNG, GIF, and many other formats. Provides basic image processing, including flip and rotate, EXIF, and other information. Supports keyboard shortcuts and trackpad gestures. The most important, Picview like Windows' default picture viewer — Photos, where zoom in and out with the mouse wheel and switch between images with arrow keys and/or with on-screen buttons.
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Picturama
Digital image organizer powered by the web. Scan local files, and keep your privacy. Don't upload your private photos to a cloud service and give a big company the rights to analyze them and do whatever they like. Non-destructive, the original images won't be touched (unless you purge the trash). Read various photo formats, JPG, PNG, TIF, WebP, and HEIC/HEIF. Read the raw formats of a whole bunch of cameras (only on Mac and Linux). Browse photos by dates, and view photos in detail (zoomable). View EXIF information, tags, and favorites, rotate, tilt and crop photos, and delete photos.
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