What is an ICDB file? An ICDB file is a thumbnail database created by Icaros, a program used to show thumbnail images for videos in Windows File Explorer. It contains cached thumbnails. Icaros uses ICDB files to load thumbnails if they are not present in File Explorer's thumbnail cache.

More Information Shark007 Icaros uses a set of Windows shell extensions to provide thumbnails for many types of videos. Icaros can provide thumbnails for videos saved in most formats recognized by FFmpeg . Optionally, a user can choose to cache the thumbnails Icaros creates in an ICDB file. To enable caching, users must select Cache from Icaros's menu. They can then choose to manually or automatically create ICDB files. If Windows File Explorer deletes a thumbnail Icaros created, Icaros can retrieve the thumbnail from its cache, speeding up the process of regenerating that thumbnail. Typically, Icaros ICDB files are saved in the following directory: C:/​Users/​UserName/​AppData/​Local/​Icaros/​IcarosCache