I have assembled a handy single-sheet reference to help you choose the right trim size for your book. This is doubly helpful if you want to use the same file for KDP and IngramSpark.
All good design (whether that is cover design, interior formatting, or illustrations) requires the designer to know the parameters they are designing in. Before deciding on your trim size, make sure it has all of the options that you want.
Click on the graphic to bring the image up in a larger view or download the PDF here.
Knowing all of these details is what makes a professional worth the investment. Time is our greatest asset, and knowledge is power. A professional designer saves you time by implementing the knowledge she has gained over the years.
Book designing is my full-time business, not my side hustle. I have worked with over 500 authors and presses on a variety of publishing projects. I would love to speak with you about your publishing project.