Image viewer. Fast, easy to use. Optional video support.

nomacs is a free image viewer for windows, linux, and mac systems.

Practical and minimal image viewer

Fork of JPEGView by David Kleiner - fast and highly configurable viewer/editor for JPEG, BMP, PNG, WEBP, TGA, GIF and TIFF images with a minimal GUI. Basic on-the-fly image processing is provided - allowing adjusting typical parameters as sharpness, color balance, rotation, perspective, contrast and local under-/overexposure.

claiming to be the best image viewer / photo collection browser

A terminal image and video viewer.

A homebrew lightweight image viewer.

Quantitative Image Analysis in C++, MATLAB and Python

An image and texture viewer for tga, png, apng, exr, dds, pvr, ktx, ktx2, astc, pkm, qoi, gif, hdr, jpg, tif, ico, webp, and bmp files. Uses Dear ImGui, OpenGL, and Tacent. Useful for game devs as it displays information like the presence of an alpha channel and querying specific pixels for their colour.

A GTK image viewer, manga reader, and booru browser

A simple image viewer 一款简单的看图软件

Image viewer for image processing experts

PDF and image viewer for the Linux framebuffer.

A small single file image viewer written in C/C++.

YUVviewer is a small tool for developers to view and preview various original image formats. It is based on Qt and opencv frameworks and supports windows/linux/macos.YUVviewer一款用于开发人员查看预览各种原始图像格式的小工具，其基于Qt和opencv的框架，支持windows/linux/macos。

Simple, cross-platform image viewer

A simple cross-platform image viewer written in C++ QT

Internet Imaging Protocol server with 3D capability.

Qt-based photo viewer that concentrates on what photographers need.

Fast and lightweighed image viewer for Windows. Suitable for image processing and computer vision area, providing presize visualization without interpolation, high zoom and color picking mode.