PDF Reader – iPad Premium Edition supports the PDF flatten feature to help you preserve valuable content of an annotated PDF file, contract, or form before you email it out.
1. Open a PDF file.
2. Tap the "More" icon in the upper righthand corner on the top bar and you will see a menu.
3. Select “Create a Flattened Copy” under “Advanced” to enable the flatten process automatically. The flattened copy will be saved to PDF Documents management page .
△ Attention: Please notice that the annotations in the flattened copy can no longer be edited or moved. This is designed to protect your important information such as digital signatures. △