You can use the steps below to convert a file to PDF, which allows the full annotation and bookmarking ability in ForeFlight Mobile.
If you have a Mac:
STEP 1. Open the file on your Mac
STEP 2. Go to File-Print (or use shortcut Command + P).
STEP 3. At the bottom of the Print window, click the "PDF" button.
STEP 4. Choose "Save as PDF...".
STEP 5. Give the file a name and save it.
STEP 6. Import the new PDF file into ForeFlight Mobile using email, iTunes, document sync, or another method.
If you have a PC:
STEP 2. Once the PDF printer driver is installed, open the document.
STEP 3. Print the document using the virtual printer.
STEP 4. Give the file a name and save it.
STEP 5. Import the new PDF file into ForeFlight Mobile using email, iTunes, or another method.