General 33 Image quality Resolution If your book contains images, make sure they are of good quality (resolution). We recommend a resolution of at least 300 dpi (dots per inch) to 600 dpi maximum. Of course, the quality of the images will be checked by us. Be careful when enlarging images, this will affect the resolution and thus quality. For example, if the resolution of the image is 300 dpi and you double its size, the effective resolution will be only 150 dpi. Reduce an image size however, can again improve the quality. Adobe Photoshop is an example of pixel-oriented software. Pixel-oriented file types can be; .psd, .jpg, .tiff, .png or .bmp. Vector figures So-called vector graphics are scalable without losing quality. They have no resolution and do not depend on the number of pixels. Therefore, vector figures are ideally suited for line figures, graphics, logos, etc. The small file size of vector figures also makes them easy to process. Adobe Illustrator is an example of vector-oriented software. Vector file types can be; .ai, .eps .pdf, .emf, .svg or .wmf. Should you have created figures in certain programmes, see if you can save them in a file type as described above. You can then place this file in, for example, your Word document or Indesign document. 300 DPI 72 DPI
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