Electronic Book Cover Images, One Step At A Time-
(1) Build your cover graphic as an SVG file in Inkscape. Use PNG elements if you have a choice as these offer much more dynamic range than jpeg files. In Document Properties (File -> Document Properties) set your canvas to 600 pixels wide by 860 pixels in height. That's the size of the viewing screen in the Amazon Kindle reader.
(2) When your illustration is finished, select it and then Export it to your My Pictures folder as a PNG file at 600 pixels in width by 860 pixels in height.
(4) Open RIOT and slide the Quality bar to 100%. Import the image into RIOT. Use the following settings. (1) JPEG, (2) turn off jpeg chroma by selecting- Chroma: none (3) set jpeg encoding to 'Progressive' (4) Slide the Quality Bar over to 100% (wishful thinking) (5) Click on the 'Compress to Size' button, and type in 62 kilobytes. (6) Press down slowly but firmly on the 'Enter' key. The slider bar should indicate a final image quality of perhaps as much as 60%.
(5) Amazon Digital Publishing specifications call for a jpeg image measuring 600 pixels in width by some 860 pixels in height (to fill the screen) and weighing in at 62 kilobytes. They say an image quality of 40 is acceptable. So the method given above is more than sufficient, even if it isn't perfect.
Amazon Kindle Books + R.I.O.T.
(2 posts) (2 voices)-
Posted 12 years ago #
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Just a side note:
Setting the quality to 100% or any other value when using Compress to size is useless.Posted 12 years ago #
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