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Add to SafariWhen comparing FastStone Image Viewer vs ImageGlass, the Slant community recommends FastStone Image Viewer for most people. In the question“What are the best image viewers for Windows?” FastStone Image Viewer is ranked 1st while ImageGlass is ranked 4th.
Question Ranking
Pros
Pro Really fast
Pro Great for comparing and sorting multiple images
Pro Lots of features for simple editing
Pro Free
Pro Best keyboard controls
Pro Editing photo levels
Pro Built-in folder browser
Can browse folders, images and videos, all with thumbnails.
Pro Has dark mode
As well as Gray mode. Good for your eyes.
Pro Open source
As long as you have enough skill you can mold it to your liking.
Pro It handles animated GIF files really well
Animated GIF files (let it be transparent or regular) are played seamlessly even if you zoom in and out.
Pro Portable version available
If you don't want to or you can't install ImageGlass, you can go with the portable.
Pro Good looking
Cons
Con Free version is not valid for business usage
Only good for private use, small business licensing is very expensive.
Con Broken SVG Support
SVG images do not show at all.
Con Sometimes really sluggish
Showing the wait cursor for multiple seconds like executing large operations in the GUI thread.
Con Can't view photos that have a filename over 30 characters
![[deleted]](https://avatars.slant.co/identicons/50/90635fc4-c65b-53f9-a897-48ce7e58d6e0)
Con Does not support APNG
It does not support the Animated Portable Network Graphic (APNG) format yet. And it is a con worth considering.
Con No editing options
The program lacks any kind of image manipulation or batch processing features like Irfanview or XnView has. If you're an advanced user, this will be the biggest con against this software.
Con Color picker doesn't have an X [close]
And can only be closed with the menu options or by ctrl+shift+k.
