Orion Viewer vs STDU Viewer

A side-by-side look at Orion Viewer and STDU Viewer. For an in-depth review of either product, follow the links below.

Orion Viewer

Photos & Graphics

Orion Viewer is a free open-source image viewer focused on speed and usability. It's lightweight with support for common raster image formats like JPEG, PNG, BMP, as well as RAW formats. Key features include basic image editing, exif data display, customizable themes, and customizable keyboard shortcuts.

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Full review → Alternatives

STDU Viewer

Office & Productivity

STDU Viewer is a free portable software used to open and view various file types like PDFs, images, Microsoft Office documents, emails, archives, EPUB books and more. It supports viewing over 20 file formats and includes features like tabbed browsing, thumbnail previews, bookmarks and annotations.

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