A modern, tabbed viewer for people who open images all day
ImageGlass is a free, open-source image viewer for Windows that was written to replace the ageing defaults without giving up speed. It opens a broad set of formats - the usual JPEG, PNG, GIF, BMP, TIFF and WebP plus SVG, HEIC, AVIF, JXL, camera RAW and animated formats - inside a tabbed window that keeps several pictures open at once. The layout is deliberately minimal: a thin toolbar, a large canvas, and side panels that appear only when you ask for them. Version 10 runs on a current .NET runtime, ships as an MSI, an MSIX or a portable archive, and is offered for both x64 and ARM64 Windows machines.
What it does
Beyond opening files, ImageGlass provides the viewing tools people reach for constantly: zoom to fit, zoom to fill, actual size, pan by drag, rotate and flip, a colour picker, a cropping overlay, a resize export and a slideshow. A filmstrip at the bottom moves through the folder, and arrow keys or the mouse wheel step between images without leaving full-screen mode. Metadata and colour-profile panels show EXIF values and the embedded ICC profile, and the settings dialog exposes the file associations, hotkeys, mouse gestures and language. Command-line switches and a portable build make it usable from a USB stick or a scripting context.
The workflow
Install once, associate the formats you care about from the settings page, then browse with the file dialog or drag a folder onto the window. Open several candidates as tabs, compare them with the filmstrip, and use the crop and resize dialogs for quick exports before saving as a new file. Because the viewer caches the current directory, paging through a shoot feels instant after the first pass. For reference work, pin the metadata panel open and check the ICC profile before judging colours.
Practical settings and limits
Choose the MSI for a conventional managed installation, the MSIX for store-style updates or the ZIP when nothing may be written to the registry. The portable build keeps its configuration in a local file, so move the whole folder when you move the stick. ImageGlass is a viewer with light editing tools, not an editor: there are no layers, no non-destructive adjustments and no 16-bit pipeline, and saving always creates a new file or overwrites with a prompt. Very large panoramas and RAW files load more slowly in the portable build, and some advanced formats depend on optional codec packs.
Who should choose something else
Anyone who needs retouching, batch conversion or catalogue features should pair ImageGlass with a dedicated editor or organiser. Users who want a viewer that manages libraries, ratings and keywords will prefer a full asset manager, and Windows 7 users should stay on the older 9.x branch. As a fast, uncluttered, licence-clean viewer for a modern Windows desktop, ImageGlass is hard to beat.
- Best for
- Anyone on modern Windows who wants a fast tabbed viewer with wide format support and no licence strings.
- Good to know
- GPLv3, so commercial use is allowed. It is a viewer with light crop and resize tools, not a layer-based editor.
How to get started
- Open the ImageGlass releases page and download the win-x64 MSI for the latest stable version.
- Run the MSI, accept the GPLv3 licence and finish the installer; a portable ZIP and an MSIX package are published with every release.
- Start ImageGlass and choose which image formats it should open by default from the settings page.
- Drag a folder onto the window, then page through files with the arrow keys or the filmstrip.
- Use Settings to set zoom behaviour, theme, language and hotkeys, then try the crop and resize export tools.
- Pin the viewer to the taskbar and set your two or three favourite hotkeys before you start using it daily.
Questions & answers
Is ImageGlass free for commercial work?
Yes. It is released under GPLv3, which permits personal and commercial use under the terms of that licence.
Is there a portable version that leaves nothing behind?
Yes. Each release includes a portable ZIP next to the MSI and MSIX packages, and the portable build keeps its settings beside the program files instead of in the registry.
Can ImageGlass edit images?
It offers crop, resize, rotate and colour picking, but there are no layers, no masks and no non-destructive adjustments; deeper editing belongs in another program.
