ImageGlass

ImageGlass is a desktop image viewer for Windows, macOS, and Linux, with support for more than 90 formats, including WEBP, GIF, SVG, PNG, JXL, HEIC, and RAW. It provides slideshows, thumbnails, color picking, hardware-accelerated rendering, and EXIF viewing through ExifGlass. Built-in tools rotate, flip, crop, resize, and compress images without loss. Classic is free at no cost plan. Pro Individual costs $$14.90 once for one user or device, while Pro Team is $$69 once for up to three users or devices. Pro adds an HDR Tone Mapper, panning options, File Watcher, custom mouse clicks, and settings and feature locks. Business licenses are $9,917 a year, with seat-based commercial use and priority support. ImageGlass says it does not scan image libraries for analytics or send images, names, or folder paths elsewhere. The stated ImageGlass 10 requirements include Windows 10/11, macOS 14+ on Apple Silicon, or Linux Desktop X11 x64.

ImageGlass pairs broad format support with viewing and basic editing tools across three desktop platforms. Classic is free; Pro adds features under one-time and annual license options.

ImageGlass suits people who need a desktop viewer for varied image formats, including RAW, with basic editing and metadata viewing. Pro options also serve individual, team, or commercial use.

ImageGlass is a desktop viewer for people handling image collections that span modern, legacy and camera formats. It suits privacy-conscious users who want basic edits and extensibility without moving files to a service. Its broad format coverage is the main reason to choose it; the lack of side-by-side comparison and the split between Classic and Pro are the main reservations.

Overview

ImageGlass has been developed since 2010 and runs on Windows, macOS and Linux. It opens more than 90 formats, including WEBP, GIF, SVG, PNG, JXL, HEIC and RAW, so mixed collections need fewer separate viewers. Color management, RAW support and metadata viewing add useful context, although side-by-side comparison is not included.

Privacy is a clear strength for local libraries: ImageGlass does not scan images for analytics and does not send images, file names or folder paths elsewhere. External editing applications can be associated with the viewer, custom hotkeys can call them, and developers can extend the app through the ImageGlass SDK. Plugin loading is guarded by a first-use permission prompt, and a plugin is disabled if its binary signature changes unexpectedly.

Key features

• Collection viewing: Hardware-accelerated rendering, smart caching, thumbnails and slideshows make it practical for moving through folders and presentations.
• Format and conversion tools: Support for over 90 formats, including RAW and HEIC, is valuable for photographers and mixed archives. Conversion is useful, but this remains a viewer rather than a full image-production suite.
• Basic editing: Rotate, flip, crop, resize and lossless compression cover quick corrections without opening another editor. Users needing advanced retouching will still need an associated external application.
• Color and metadata: Color picking and color management help with inspection, while EXIF information is available through ExifGlass.
• Pro controls: Pro adds an HDR Tone Mapper, free and margin panning, File Watcher, custom mouse clicks, settings lock and feature lock. These additions matter most in managed or specialized workflows, not casual viewing.
• Local licensing: Pro verifies licenses locally and requires no account, online activation or device lock.

Pricing

Classic costs nothing, with unlimited users, GPLv3 licensing, all versions and community support channels. It is the sensible choice for personal users who need broad viewing and basic edits and do not require Pro controls.

Pro Individual costs $14.90 once for one user or device and personal use, covering Pro v10.x with standard purchase help. Pro Team costs $69 once for up to three users or devices and commercial use, also for Pro v10.x. These one-time plans suit individuals and small commercial groups respectively, but they do not include the all-version coverage or priority support of Business.

Pro Business costs $9,917 a year on a seat-based subscription, with monthly or yearly options, commercial Pro access, all versions while active, priority support and volume pricing as low as $19 per seat. Organizations can evaluate Pro features with a free 14-day Business license. The subscription model and renewal obligation make Business appropriate for companies that need ongoing version coverage and support rather than occasional use.

Platforms

ImageGlass supports Windows, macOS and Linux. ImageGlass 10 requires Windows 10 or 11 x64 or arm64 version 1809 or later, macOS 14 or newer on Apple Silicon, or Linux Desktop X11 x64. Those requirements are important for older Macs, non-X11 Linux desktops and unsupported Windows installations.

Who it's for

Choose ImageGlass for a cross-platform desktop library containing many formats, especially RAW, HEIC, SVG or JXL, when local handling and quick edits matter. It also fits teams that need plugin controls, external-editor links or organization-wide licensing. Look elsewhere if image comparison is central, if you need a comprehensive editor, or if your computer misses the stated ImageGlass 10 requirements.

Pros and cons

Pros

• Over 90 formats, including RAW, reduce format-related app switching.
• Hardware rendering, caching, thumbnails and slideshows support large browsing sessions.
• Local privacy practices avoid sending images, names or paths for analytics.
• Basic edits, conversion, metadata and color tools cover common viewer tasks.
• Plugin signature checks and permission prompts provide a defined safety barrier.

Cons

• No side-by-side comparison limits review and curation workflows.
• Advanced editing depends on external applications rather than built-in tools.
• Pro Business is a $9,917-per-year commitment, while lower one-time plans are limited to Pro v10.x.
• ImageGlass 10 platform requirements exclude some older systems and non-X11 Linux setups.

Alternatives

Photo Viewer Software is a useful category starting point when you want to compare several viewers before committing.

Ghost Commander is a free Android option, so choose it when mobile Android access matters more than ImageGlass's desktop focus.

ApolloOne is a macOS freemium alternative with a free version and a 14-day purchase reminder, making it the more focused choice for Mac-only users.

FastStone Image Viewer is a Windows alternative with free personal and educational use and a commercial lifetime-license option.

QTerminal is a free Linux and macOS option for readers seeking that alternative platform experience.

XnConvert is a cross-platform freemium alternative oriented toward conversion workflows.

Geeqie is free open software for Linux, macOS and Windows.

GNOME Remote Desktop is free Linux and self-hosted software with RDP and VNC backends.

Gwenview is a free Linux image viewer with basic editing.

Verdict

ImageGlass is a strong recommendation for desktop users who need unusually broad format support, private local viewing and quick edits across Windows, macOS and Linux. Classic delivers that core without cost, while Pro adds meaningful controls for specialized and business workflows. Choose another tool if side-by-side comparison, deep editing, mobile use or an older platform is your priority.