Amazon.txt: 8x

Publishing 8" x 8" books on Amazon KDP requires precise technical setup, including 300 DPI resolution, a 0.125-inch bleed margin on all sides, and accurate cover templates to avoid submission errors. Key, text, and image elements must stay within designated safety zones, with final files exported as flattened PDFs for optimal printing. For detailed guides, visit the KDP Community Forums . AI responses may include mistakes. Learn more How to Publish an Illustrated Book on Amazon KDP