ImageGlass

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.

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 features semi-transparent widgets that display additional information such as thumbnails, metadata or histogram. It is able to browse images in zip or MS Office files which can be extracted to a directory. Metadata stored with the image can be displayed and you can add notes to images. A thumbnail preview of the current folder is included as well as a file explorer panel which allows switching between folders. Within a directory, you can apply a file filter, so that only images are displayed whose filenames have a certain string or match a regular expression. Activating the cache allows for instantly switching between images.