Are there any preferred specifications on the PDF file?

The optimized preferences on the PDF file are:

1.  All pages should have same height and width. Example: all pages in A4 format and portrait orientation.
2. Crop marks and bleeds should be removed
3. We recommend that your PDF file is at least 200 dpi in resolution.
4. If your PDF is using photos, graphics or any other kind of images, make sure they are in high resolution. 200 to 300 dpi to avoid pixelation.
5. Avoid adding crop marks to your PDF document, otherwise they will be visible.
6. We recommend the use of big, sharp, readable font types or Web fonts. This will guarantee a clean and crisp look in your texts.
7. In order to create a digital replica of your original content you must have the copyright of the original document.

What you see is what you get. Please read our instructions how to create a flawless online publication here.