The main function of this app is to compress photos to accurate file size as required by you.
This app will reduce image size in mb to kb.
Use QReduce -> https://play.google.com/store/apps/details?id=com.mobso.photoreducer
<- to perform the same task in multiple photos simultaneously.
* Compresses to the nearest size below the entered value. (Attaining perfect size always is impossible)