How to enter your book descriptionTo add or update your book’s description:

1. Sign in to: https://kdp.amazon.com
2. Go to your Bookshelf
3. Next to the book you want to update, click the ellipsis button ("…").
4. Select Edit Details.
5. Under Description, make the necessary edits. Note that we have a limit of 4000 characters for the description.
6. Click Save and Continue.
7. At the bottom of the Pricing page, click Publish.

The window to enter for the Amazon Kindle Direct service is as follows.

Choose your language, and put your title of a book.

​Include the author's name and, if your book is in a series, this information.

​Enter the name of the contributor and brief book information.

Enter the relevant category, keywords and whether or not you own the copyright.
Also you have to put primary audience and primary marketplace. 

​Once you have entered detailed information, proceed to the next step. This is a window for uploading premade files. This step is the process of creating an ebook.

​They ask if your book was created by artificial intelligence.

​If the body file and cover image have been uploaded smoothly without errors, you can preview them by clicking the button below.

​Next is the pricing window.

​After setting the price, click the publish button and the entire process is completed.

As of my last knowledge update in January 2022, there are several online tools available for converting images to PDF. However, please note that the popularity and reliability of specific tools can change over time, and new tools may emerge. Therefore, it's advisable to check for the latest reviews and user feedback to ensure the tool's current effectiveness and safety.

As of my last update, some popular online tools for converting images to PDF include:
​

1. SmallPDF: SmallPDF offers a variety of PDF-related tools, including image to PDF conversion. It's user-friendly and supports multiple image formats.
2. ILovePDF: ILovePDF provides a suite of PDF tools, and one of them is the image to PDF converter. It supports various image formats and is easy to use.
3. Online2PDF: Online2PDF allows you to convert various file types, including images, to PDF. It supports batch processing and offers some customization options.
4. PDFcrowd: PDFcrowd is an online HTML to PDF converter, but it also supports image to PDF conversion. It might be useful if you have images embedded in HTML.
5. PDF24 Tools: PDF24 offers a set of online PDF tools, and their image to PDF converter is one of them. It supports various image formats.
   
   ​Among them, I would like to recommend PDF24 Tools. There is no need to register, and it is quick and easy.
   
   

If this is your first time uploading your own book cover to Amazon KDP, we recommend that you check the information below. This is because it can be frustrating if you see an error message while uploading. When a user encounters a problem, KDP does not have a way to promptly resolve the problem by calling or chatting. In fact, most problems can be solved by reading their well-prepared menus and guides carefully. However, it is not easy for beginners to calmly read these manuals and respond. I would like to show it in a more visual way to prepare for this type of situation.

1. Change the browser you are using. If you are using Safari, we recommend using Google Chrome.

2. Check the trim size in the cover image. It should be the same trim size you wanted to make.

3. If the problem is still not resolved, check the PDF version of the file.

Below is an example of loading multiple image files at once and editing them at once. In my case, I would like to show you how to batch-change image files from RGB to CMYK, a printing mode.

1. Go to the File ---> Scripts---> Load Files into Stack.

2. Through the Browse button, you can open your all images, which you want to edit at once. 

In my case, I would like to change the mode like below. 

For mode changing, I clicked the 'don't merge' button. 

After changing the mode, I moved File---> Export---> Layers to Files. 

​Save the file as a JPG file in the designated location.

In my case, I converted all images to PDF.