You can follow these steps to increase the size of the thumbnail images in Windows Explorer’s thumbnail view.
1. Run regedit.
2. Navigate to
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer.
3. In the right pane right-click on the ThumbnailSize key and select Modify. If the ThumbnailSize keys do not exist, you can create them by right-clicking on an empty space in the right pane and selecting “New - DWORD Value”.
4. You can set the Value between 32 and 256, the higher the number you choose, the larger you thumbnail will be.
5. Close regedit.
Create Bigger Thumbnails In Windows XP
