Ebook Image File Size

If you were to buy the epub file of this ebook you d see that the file is actually somewhere around 4 2mb.

Ebook image file size. Divide the height by 28 for a landscape book or 41 for a portrait book these numbers are explained below the result of this is the minimum height in mm that text should be in your original file. Standard 8 5 x 11 page size ensures that any included images will be at least large enough for the ipad. Lest you get worried their guidelines say amazon strongly recommends images meet a minimum of 300 ppi.

As a basic rule you should take whatever size in inches you want the image to be and multiply it by 300 to get the pixel dimensions. If you were to send us a document that you d formatted to mimic a common ereader screen size like 4 x 6 5 x 7 or 5 5 x 8 5 most of your images will be too small for larger ereader tablet devices. It is the ideal setting for ebooks because it will help reduce your overall file format size.

Also very importantly check the resolution of your image. Change the width to say 650 pixels wide. We recommend that all images be submitted at 300 pixels per inch at the size they will appear in your ebook.

Any images below 72 ppi will cause the book to fail conversion in other words the range of acceptable is 72 300ppi. Kindle devices and reading applications do not support tiff multi frame gifs or any image with a transparency. However if you re going to be printing your book you ll need to be a bit more careful.

So for example a landscape 10 x 8 book is 200 mm tall divide this by 28 and you get roughly 7 mm. My first hint on lowering file sizes is to ignore the dpi of your images and focus on the total mpixels. Keep in mind that every little bit of space saved on images means space you can use for sample chapters or promotional images.

It is about as large as you would want for an ebook image. So where did the other 4 1mb come from. If you re only making an ebook or webbook anything from 300 x 300 pixels and upwards should generally work.