How to Prepare a PDF for Amazon KDP Publishing

KDP has specific technical requirements that differ significantly from standard document PDFs: **Trim size**: The physical dimensions of your printed book. Common sizes: 5×8" (fiction), 6×9" (non-fiction, business), 8.5×11" (textbooks, workbooks). Your PDF page dimensions must exactly match your chosen trim size. **Bleed**: An extra 0.125" (3.2mm) added to all sides that will be cut during printing. Content that goes to the edge of the page (full-bleed images, colored backgrounds) must extend into the bleed area. If your book has no full-bleed elements, set bleed to 0. **Margins**: KDP requires minimum margins to prevent text from being cut during printing. For 5×8" books: minimum 0.25" outside margins, 0.375" inside margin (gutter), 0.75" total gutter recommended. The inside margin is larger to account for the binding. **Image resolution**: All images must be at least 300 DPI (dots per inch) for professional print quality. Lower resolution images will print blurry. **File size**: KDP accepts PDF files up to 650MB for print books. Realistically, aim for under 100MB for manageable upload times. **Font embedding**: All fonts must be embedded in the PDF. KDP will reject PDFs with non-embedded fonts.

The most efficient approach is to set up your word processor or design software with the correct dimensions from the beginning, rather than trying to adjust after writing. Here's how to configure the most common tools:

1. 1Choose your trim size and calculate total page dimensions including bleed (e.g., 6×9" trim + 0.125" bleed on all sides = 6.25×9.25" page size in your software)
2. 2Set margins: outside 0.25", inside 0.375–0.75" (gutter), top 0.75", bottom 0.75"
3. 3In Word: Page Layout → Size → More paper sizes, enter custom dimensions
4. 4In Google Docs: File → Page Setup → Paper size → Custom
5. 5In InDesign: New Document → set page size and bleed
6. 6Verify margins are correct using the ruler view
7. 7Set up a master page template before writing content

A KDP book PDF must have all pages in the correct sequence. For a typical non-fiction book: - **Even page count**: KDP requires books to have an even total page count (books are printed in signatures). If your book has 217 pages, you need to add a blank page somewhere to make it 218. - **Front matter pages**: Half-title page (page 1), full-title page (page 3), copyright page (page 4), dedication (page 5), table of contents, foreword — all in the correct sequence. - **Chapter alignment**: Chapters should start on odd (right-hand) pages. If a chapter ends on an odd page, the next chapter starts with a blank even page followed by the first chapter page. Use LazyPDF's Organize tool to verify page ordering and add blank pages where needed after your initial export. The Merge tool can help combine separately prepared sections (front matter, chapters, back matter) into one complete document.

1. 1Export your complete manuscript as PDF from your writing software
2. 2Count total pages — must be even
3. 3Verify front matter is complete: title page, copyright, dedication, TOC
4. 4Check that each chapter starts on a right-hand (odd-numbered) page
5. 5Use LazyPDF Organize to view all pages as thumbnails and verify ordering
6. 6Insert blank pages where needed using the Organize tool
7. 7Verify the final page count is even

Images in KDP print books must be at 300 DPI minimum. Here's how to check and optimize: **Checking image resolution**: Open your PDF and try to zoom to 100% view of each image. At 100% on screen (typically 72–96 DPI display), a 300 DPI image should look sharp. Blurriness at 100% zoom is a warning sign. **Grayscale vs. color**: KDP charges significantly more for color printing. If your book has charts or diagrams that work in grayscale, convert them to grayscale in your design software before exporting. Mixed color/grayscale pages in the same PDF is also possible — KDP's system detects color pages automatically. **Image placement**: Ensure images don't extend into the binding area (gutter). The inside margin must be free of critical content. **Cover vs. interior**: Your book's cover is a completely separate PDF from the interior. KDP provides a cover creator or accepts a print-ready cover PDF. Do not include your cover image in the interior PDF.

KDP accepts files up to 650MB, but large files take longer to upload and process. More importantly, KDP charges a download delivery fee per page for ebooks based on file size — keeping your PDF reasonably sized reduces costs for Kindle editions. For print books, the file size matters primarily for: - Upload reliability (large files risk timing out on slower connections) - Review processing speed (smaller files get through KDP's review faster) Use LazyPDF's compress tool with medium compression on your final interior PDF. For text-and-image books, this typically reduces size by 50–70% with no visible quality degradation in print. **Important**: After compressing, always verify: - Re-check image resolution — compression should not reduce print DPI significantly, but verify - Open and page through the entire compressed PDF to check for any rendering issues - Verify all fonts still display correctly - Compare the compressed version to the original at 100% zoom to check image quality If compression produces any visible quality issues, use a lower compression level. Print quality must be preserved — reader reviews of a blurry printed book can damage your author reputation significantly.