THUMBDATA3 File Extension

Have a problem opening a .THUMBDATA3 file? We collect information about file formats and can explain what THUMBDATA3 files are. Additionally we recommend software suitable for opening or converting such files.

What is the .THUMBDATA3 file type?

The .thumbdata3-[10 random digits] extension is a service extension used within the Google Android operating system. Android is an open-source operating system based upon the Linux kernel and developed with strong support both from Google, Inc. and the international community. Android is dedicatedly targeted at touch-screen mobile devices such as smartphones, tablets etc.

The "thumbdata3" part of the extension stands for 'Thumbnail Data,' and such .thumbdata3-[10] files are simply binary files that contain preview images (thumbnails) for images located in a given directory. There is a separate .thumbdata3-[10] file in each directory containing image files, usually on external storage media (SD cards etc.).

Such thumbnail files are created automatically the first time a directory with images is accessed and are usually left behind even when images are deleted.

Such .thumbdata3-[10] files are service files and are not meant to be opened by the user. Still, they can be safely deleted to save storage space, as they will be re-created by the system when needed.

Software to open or convert THUMBDATA3 files

You can open THUMBDATA3 files with the following programs: 

Popular Formats

Video Tutorials