Make sure all images are high resolution Readers can enlarge and interact with images in eBooks, so take advantage of these features by adding images with the highest resolution possible. To be considered for Great on Kindle, images need to be at least 300 pixels per inch (PPI) at the size you would like them to appear in your eBook. For example, if you want an image to take up the full device screen, the image will need to be at least 1200 pixels wide or 1800 pixels in height. See this chart for more examples:



Display size PPI (minimum) Width x height (in pixels) 100% 300 PPI At least 1200 PX wide or 1800 PX tall 75% 300 PPI At least 900 PX wide or 1350 PX tall 50% 300 PPI At least 600 PX wide or 900 PX tall To check the pixel size on a PC:



Right-click on the image file and select Properties. In the image properties window, click the Details tab. Find the size of the image under "Image." On a Mac:



Open the image file using the Preview application. From the menu bar, select Tools. Select Adjust Size. Find resolution in the "Image Dimensions" box that appears. After you determine that your images are 300 PPI at your desired display size, you need to insert them in your eBook file. Here are instructions for inserting high-resolution images into DOC/DOCX and MOBI/EPUB files:



DOC/DOCX Turn off image compression in Word 2016. Images inserted in Word documents are automatically downgraded due to a default setting. Select File > Options. In the "Options" box, click Advanced. Under "Image Size and Quality," do one of the following: Ignore the drop-down list to select your current document by default.

Choose All New Documents (applies to Word only) to turn off picture compression on all future documents. Under "Image Size and Quality," choose Do not compress images in file. This setting applies only to the document that you selected in the "Image Size and Quality" list, unless you also select All New Documents. Under the same section, select Set Default Target Output to: 330 PPI If you’re trying to improve images already in the document, you’ll need to follow the steps to turn off image compression, delete the image(s) from the document, and reinsert the images.



Insert or replace images in your Word document. Select Insert > Pictures for a picture on your computer. Find and select the image, and select Insert. Do not increase the size of your images in Word document because it will decrease resolution.



MOBI or EPUB All images in your MOBI or EPUB file must follow CSS image styling guidelines. To qualify for Great on Kindle, your book needs to include CSS image style tag(s) that show the desired display size of your image(s). The following chart provides more detail on formatting and inserting image style tags in your MOBI or EPUB based on image type:



Image type Description How to calculate CSS image style tag example Cover The cover image of your book The cover image should be at least 1200 x 1800 pixels. A cover image should have a full-page layout and have the image width or height set to 100% in the image tag. <img src="cover.jpg" style="width:100%"> Block Most common images in eBooks. Intended to display between paragraphs, sections, or on their own page. The % width or height of an image in the image tag is required to calculate how much of the screen the image occupies. To calculate the maximum display width size:



Image width calculation: Image width (in pixels)/1200 pixels = maximum width display size (in %)



Example 1: Your image "Happy.jpg" is 900 x 1400 pixels and you want to calculate the maximum display width.



900 /1200 pixels = 75%



Image height calculation: Image height (in pixels)/1800 pixels=maximum height display size (in %)



Example 2: Your image "Funny.jpg" is 700 x 1200 pixels. You want to calculate the maximum display height.



1200/1800 pixels = 67%



For the best reading experience, please make sure that the display size for important images is 40% or more. <img src="happy.jpg" style="width:75%"> Inline Embedded in the lines of text. Scale with the surrounding text when the font size is increased or decreased. Examples include emojis, math equations, or special characters. To properly scale with the text, the inline image needs to be set in Em, a unit of measure, like a font size.



Height of 1 line of text = 1em



1em = 60 pixels



Example: You want your inline image, "equation1.jpg," to take up the space of 3 lines of text (3ems).



3 ems (your desired image height) x 60 pixels (required pixel height per em) = 180 pixels (minimum pixel height for your inline image) <img src="equation1.jpg" style="height:3em">



Enter unique, accurate book details The book details you enter when setting up your title on KDP (e.g., title, author name, and category) describe your book to readers. This information matters because it helps customers find your book and drives purchasing decisions. Keep these criteria in mind when entering book details to help readers find your book:



Be accurate. Make sure your book details match what’s on your cover and in your manuscript to avoid reader disappointment. Don’t add a series name if you only have one title. Example: If your cover says My Kindle Book, make sure your title name and interior file also say My Kindle Book. Also, you can’t choose a fiction subcategory.





Make sure your book details match what’s on your cover and in your manuscript to avoid reader disappointment. Don’t add a series name if you only have one title. Example: If your cover says My Kindle Book, make sure your title name and interior file also say My Kindle Book. Also, you can’t choose a fiction subcategory. Be consistent. Use the same title, author, and series name across editions and formats. The author name is one of the most common ways customers find your books. Also, several Amazon features (e.g., Author Pages and Series Page) rely on a consistent author name. If you want multiple titles to appear on an Author Page or Series Page, or want different editions to be linked, you need to use the same name. For example, if you use John T. Smith for your first book and J.T. Smith for your second book, it can make it harder for customers to find all your titles. We also recommend entering unique book details. Commonly used terms or phrases in your title, subtitle, or series name can make it harder for customers to find your book. Further, as a best practice, don't be redundant when choosing a subcategory. Choosing even a single category will display your book in a variety of searches, so don't list your book in both a category and one of its sub-categories.



See tips on entering book details. Also, to ensure the details you enter don’t result in inaccurate or overwhelming search results, read these guidelines.







Make sure Enhanced Typesetting is enabled Enhanced Typesetting is a series of typographical and layout features that provide benefits such as faster reading with less eye strain, beautiful page layout, and large fonts. See benefits of Enhanced Typesetting.



Use Kindle Previewer to see if your book supports Enhanced Typesetting:



Download Kindle Previewer and open your book. Select View > Book information. If your eBook supports Enhanced Typesetting you'll see a green checkmark in the Navigation pane. Note: Files with large tables and audio/visual files aren’t currently supported with Enhanced Typesetting. If you have large, complex tables, split them into smaller, simpler ones to enable this feature.







Turn on X-Ray X-Ray is a Kindle eBook feature that allows readers to learn more about a topic, event, place, or any other term by pressing and holding on the word or phrase that interests them. Nonfiction readers love X-Ray to get answers to their questions—all without leaving the book. Even a few descriptive words can make a big difference to readers as they try to learn more about your content.



X-Ray enables you, the author, to add your own descriptions or commentary that will show up when the reader engages the X-Ray feature. With X-Ray for Authors, you can add new X-Ray entries, edit existing ones, or enable X-Ray for a new book.



For example, you could use X-Ray content to provide more information about an industry term, event or place in your book:



Event - The coronation. "The coronation of Queen Elizabeth II took place on June 2, 1953 at Westminster Abbey. She was only 25 years old and had become queen after the sudden death of her father, King George VI. Until she was 10 years old, Elizabeth had been third in line to the throne, behind her uncle, Edward, Prince of Wales, and her father, the Duke of York. However her uncle abdicated in 1936 and her father became king, making her the heir to the throne at the time of his death."

"The coronation of Queen Elizabeth II took place on June 2, 1953 at Westminster Abbey. She was only 25 years old and had become queen after the sudden death of her father, King George VI. Until she was 10 years old, Elizabeth had been third in line to the throne, behind her uncle, Edward, Prince of Wales, and her father, the Duke of York. However her uncle abdicated in 1936 and her father became king, making her the heir to the throne at the time of his death." Place - Mexico City. "Destination of my first international trip which inspired my love for travel." To turn on X-Ray:



Go to your Bookshelf. Under the KINDLE EBOOK ACTIONS menu, click the ellipsis button ("…") next to the book you want to update. Select Launch X-Ray. This will take you to the X-Ray for Authors tool. Learn more about turning on X-Ray for your book.





