Set paragraph indentations and line spacing to ensure that your book body text displays consistently youll want to indent paragraphs tab spacing doesnt convert to kindle and set line spacing to ensure consistency and save time modify the normal style this will automatically apply the formatting. File formats that you can upload to kdf aredoc docxtxt html and pdf files pdf format is least recommended as the results are really poor and visually unpleasing the best option for you is to convert pdf to epub or a tailored mobi file apt for your book. Publishing with kindle works best when you go through the kindle direct publishing service it sets the content up specifically for use with the kindle o understand the language of kindle although the kindle books are published using html and css there are some codes that are unique to the kindle format o invest in an html guide you can purchase a book for the purpose or do your . Find helpful customer reviews and review ratings for the best guide to kindle formatting at amazoncom read honest and unbiased product reviews from our users