Extract text from Thumbnail cache files (THUMBNAILS)
To convert THUMBNAILS Thumbnails to another format, you need Android OS or other System software.
To convert other file formats to the "Android Cache Data" file type, you need software like Android OS or a similar tool.
A .thumbnails item is an Android system component, typically found as a hidden folder or a large cache data file (like .thumbdata) inside the DCIM directory of a smartphone. It stores low-resolution preview images to accelerate media loading times in gallery applications.
These files are generated and managed natively by the Android OS and its default Gallery applications.
The primary disadvantage of this format is its aggressive growth. Because it caches every viewed image, a .thumbnails file can balloon to several gigabytes, severely depleting mobile device storage space. Furthermore, the underlying data structure is typically a proprietary binary blob rather than a standard image file. You cannot simply open these files in standard viewers like Windows Photos or web browsers.
If users need to access the images trapped inside (often to recover deleted photos), the best conversion target is extracting the embedded JPG files. Be aware that the extracted files will suffer from significant quality loss and low resolution compared to the original photographs.
This format is notoriously difficult to open or convert because it is a closed, proprietary cache container meant only for internal system use. Standard online converters fail to process it. If our analysis detects a supported underlying or embedded format like JPEG signatures, viewing or conversion may still be possible.
Convert.Guru analyzes your THUMBNAILS file, detects the exact format, and lets you read the text inside.
Users also converted THUMBNAIL, PNG, JPG and PDF files.
If you want to convert THUMBNAILS file to SYS, DLL, EXE, DRV, VXD, 386, COM, BAT, CMD, SCR, PIF or LNK, you can use Android OS or similar software from the "Android Image Cache Storage" category. In the File menu, look for Save As… or Export….
To convert MSI, EXE, REG, MST, LNK, CAB, CAT, DRV, INF, SYS, MSU or DLL files to THUMBNAILS, try Android OS or another comparable tool in the "Android Image Cache Storage" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our THUMBNAILS converter.