FastStone Image Viewer
6.8#4 in file viewer software$34.95 one-timeFree planWindows
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| Fact | FastStone Image Viewer | Okular |
|---|---|---|
| Free plan | Yes | Yes |
FastStone Image Viewer may suit Windows users who need to browse, edit, compare, or batch-process images, including camera RAW formats. It may also fit users who want scanner support or a portable version for removable storage.
Okular suits readers who need one application for documents, e-books, comics and images across desktop platforms. It is also useful for people who annotate or sign PDFs, fill forms, or want a free and open-source viewer.