Fonts used must be fully embedded in the PDF. Please note this especially if you use OpenType fonts.
The PDF file should not contain any transparency. Combine transparency with the associated objects on one layer.
The PDF file must not contain any complex vector graphics. Replace these graphics with pixel graphics.
The following tips have proven their worth when creating a 1000° ePaper:
If you save a PDF file in compatibility with “Acrobat 4.0 or higher”, i.e. as PDF version 1.4, transparencies are automatically reduced.
The same applies if you comply with the PDF/A-1b standard. According to this standard, transparency is also not permitted.
Transparencies in a PDF file are the most common cause of display and performance problems. Reduce all layers in the PDF to just one visible layer.
This means that your ePaper is rendered quickly and is less prone to errors during conversion.
The recommended resolution for images and graphics is 150 dpi. This is usually sufficient for a good display, even when zooming into the ePaper
and ensures optimum performance. As a general rule, the larger the images in a PDF file, the larger the amount of data that is transmitted to
your readers via the Internet. Loading times can be correspondingly longer.
Make sure that the PDF file is created in RGB color space to avoid color distortions. The RGB mode is used for display on all screens.