Thumbdata is a file that Android devices create to store thumbnail images of media files, such as photos, videos, and music. When you browse through your device's storage, you may notice that thumbdata files are scattered across different directories, taking up a significant amount of space. These files are generated by the Android operating system to provide a faster and more efficient way to display thumbnails of your media files.
You deleted a batch of photos and emptied the trash. However, a Thumbdata file might still contain cached miniature copies of those images. While thumbnails are not full resolution (max 512x512 in most cases), they can be better than nothing—especially for identifying lost documents or sentimental low-res shots. thumbdata viewer
Requires Python 3.8+ and the Pillow library. Not ideal for beginners. Thumbdata is a file that Android devices create