TDB files exist as 3 different types. Please find information about each of them below.
Type 1: Android Thumbnail Cache
A tdb file contains thumbnail cache created by Android system. The default software to open tdb files is Google Android operating system. An Android tdb file is created when an SD card with images is ...
A tdb file contains thumbnail cache created by Android system. The default software to open tdb files is Google Android operating system. An Android tdb file is created when an SD card with images is inserted. It stores thumbnails of images for faster browsing. The tdb file is automatically generated and is typically named SThumbDB.tdb. It is a hidden system file not meant to be opened manually. The Android tdb file provides more efficient image browsing on the device by caching thumbnails instead of loading full size images.
A tdb file may appear if you mount the SD card on a non-Android device. It is similar to the Thumbs.db file in Windows which also stores thumbnail cache. As the tdb file is used internally by Android, it should not be edited. Primarily the tdb file extension indicates an Android Thumbnail Cache file from Google for the Android operating system. The tdb file format is binary with a low popularity rating as Android-generated cache files are rarely found in most users’ file systems.
Android Operating System
Various File Managers
SQLite Database Viewers
eBay Turbo Lister