Illustrations created at 300 DPI (dots per inch) are considered the industry standard for high-quality print production, ensuring sharp, detailed visuals without pixelation. For digital formats, 72–150 DPI may suffice, but starting at 300 DPI offers flexibility to resize or repurpose artwork without losing clarity.
When working with a book illustration service, it’s essential to confirm that all artwork is delivered in 300 DPI resolution, especially for printed editions. This guarantees that your illustrations will appear crisp in both paperback and hardcover formats, while also allowing easy optimization for digital platforms like Kindle or Apple Books. High-resolution illustrations are not just a technical requirement, they reflect the professionalism and polish your book deserves.