[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts.jpg\UserChoice] "Progid"="Applications\photoviewer.dll"
| Software | Key Features | |----------|---------------| | | Extremely fast, supports all formats, plugins available | | ImageGlass | Modern UI, touch-friendly, open-source | | FastStone Image Viewer | Very similar to old Windows Photo Viewer, free for non-commercial | | XnView Classic | Supports 500+ formats, very lightweight |
— those are almost always malware. The real Windows Photo Viewer cannot be downloaded separately.
If you just want a reliable classic image viewer without any registry tweaks: from irfanview.com — it's faster than Windows Photo Viewer and supports more formats.
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts.png\UserChoice] "Progid"="Applications\photoviewer.dll"