How to reduce a PDF size:
1. Launch PDF NOW app on your device. iPhone or ipad.
2. Go to the toolbar on top of this app. Click more icon which look like a upside down >.
3. Just click "Compress" button.
4. Choose the PDF you want to compress from your device. Or you can download it from your Google Drive and Dropbox before step 2.
5. Then choose compression level and click " Compress". It can be free to compress. Try it once.
6. Wait for the compression to complete and share your file. It's that simple.