Export and save files from apps to your sdcard.
* use the send option in Google Drive to save your files as pdf
* use the share option in image/gallery apps to save the image
* share an imgur album from any app and it will save the album as a zip file
All files will be saved to your downloads directory on your sdcard.
This app does not appear in your app drawer, it will appear whenever you choose to share an image or send a Google Drive document. To uninstall you can go into your app manager or use the Google Play app.
If you like more file types supported, drop me a line.