Compress Image Size in KB & MB is a free Android app developed by Mobso Apps. As the name suggests, the app's main function is to compress photos to a specific file size. The app reduces the image size in MB to KB, allowing users to save storage space on their devices. While the app compresses photos to the nearest size below the entered value, attaining the perfect size is not always possible.

The app also provides a tutorial on how to use it, which can be accessed through YouTube. Additionally, users can use QReduce Lite or QReduce Multi, also developed by Mobso Apps, to perform the same task on multiple photos simultaneously. However, it is important to note that transparent and translucent pixels of PNG photos will be lost during the compression process. All compressed photos are saved to the gallery in JPG/JPEG format.