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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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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WidsMob Viewer
View single image, multiple images or folder-based images in incredible fast speed and simple operation with various viewing modes. You can browse all your photos in one window without extra clicking and operating. Offer stunning filters and effects, adjust photo parameters like exposure, contrast, saturation, temperature, Sharpness, etc. and crop photo to suitable size as your iPhone, Android phone or computer wallpaper. When you have hundreds of photos, you can only add one image or the whole folder to WidsMob Viewer to preview all images. Even if you need to view photos in different folders, you can use the library mode. It has an advanced algorithm to view photos at super fast speed. Besides the JPG, JPEG, TIFF, PNG, BMP and other photos format, WidsMob Viewer also supports most of the popular RAW formats. It is able to load RAW files from SD card or external drive. It also enables you to turn RAW files into JPG, PNG and other photo formats.
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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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