Top Alternatives to Viewnior

IrfanView is a fast, compact, and innovative FREEWARE image viewer and editor for Windows. It supports numerous graphic formats and offers advanced features for batch processing, conversion, and basic image editing.

XnView is a versatile and free multimedia viewer, browser, and converter that supports over 500 image formats. It offers powerful batch processing capabilities for tasks like conversion, renaming, and resizing, making it an essential tool for managing large photo collections.

XnView MP is a powerful cross-platform media browser, viewer, and converter. It's the enhanced version of the classic XnView, offering a rich set of features for organizing, processing, and converting image files across various operating systems.

Preview is the native image and PDF viewer for macOS. It offers essential tools for viewing, annotating, and basic editing of these file types directly within the Apple ecosystem. Designed for efficiency and low resource use, Preview provides a seamless and integrated experience for handling common document and image formats on Mac computers.

JPEGView is a lean, fast, and highly configurable image viewer for Windows, designed for efficient viewing and basic processing of JPEG, BMP, PNG, and other popular image formats. It excels in performance and offers real-time image processing capabilities.

Nomacs is a fast and lightweight free, open-source image viewer offering a wide array of features for diverse image formats, including RAW and PSD. It provides essential editing tools, batch processing capabilities, and extensibility via plugins, making it more than just a simple viewer.

Xee is a lightweight and fast image viewer and browser application designed for macOS. It offers a streamlined interface for quickly viewing images in various formats, managing image collections, and performing basic image operations without the need for heavy editing software.

Imagine is a versatile and lightweight image and animation viewer for Windows, offering robust support for popular formats, including GIF. It includes a range of tools for screen capture, basic image editing, batch processing, and creating animated GIFs.

Geeqie is a blazingly fast and extremely customizable Gtk+ based image viewer designed for Unix-like operating systems. It excels at efficient photo browsing, organization, and basic editing, making it an ideal tool for photographers and anyone dealing with large image collections.

Eye of GNOME (EOG) is the default and official image viewer for the GNOME desktop environment, known for its simplicity, speed, and tight integration within the GNOME ecosystem. It provides essential image viewing capabilities with a clean interface.

Free Opener is a versatile and free utility designed to open a wide array of file types without requiring multiple specialized applications. It acts as a universal viewer for documents, images, media files, archives, and more, simplifying file access for users.

Mirage is a lightweight and fast image viewer built with GTK+ and PyGTK. It offers essential image viewing and basic editing functionalities, making it an excellent choice for users prioritizing system performance and simplicity over feature-rich applications. Its lean design ensures quick startup and smooth performance, even on older hardware.

feh is a lean and fast command-line image viewer tailored for users who prefer efficiency and keyboard-driven workflows on X11 environments. It excels at quickly displaying images, creating collages, and running slideshows directly from the terminal.

PhotoQt is a fast, simple, and elegant open-source image viewer built with C++/Qt. It offers a clean interface, essential image viewing features, and basic editing capabilities, making it a great choice for quickly browsing and managing your image collection across different operating systems.

Ristretto is a lightweight and fast image viewer designed for the Xfce desktop environment. It allows users to quickly view, scroll through, and perform basic operations on image files, making it an essential tool for everyday photo browsing.

Universal Viewer is a portable file viewer capable of displaying a wide array of file formats, including documents, images, media, and raw files, without requiring the associated native applications.

GPicView is a streamlined and exceptionally fast image viewer designed for the X Window System, particularly popular within lightweight desktop environments like LXDE. It prioritizes speed and simplicity over a complex feature set, making it an ideal choice for quickly browsing and displaying image files.

Image Eye is a lightning-fast, lightweight image viewer designed for effortless browsing and quick access to your photo collection. It prioritizes speed and simplicity, offering essential viewing and basic manipulation tools.