What DPI should KDP images use?
Calculate the pixels required for a chosen print size.
KDP paperback guidance specifies a minimum image resolution of 300 DPI. An 8.5 × 11 inch page therefore needs 2550 × 3300 pixels.
Steps
- Measure the final trim size in inches.
- Multiply width and height by 300.
- Check each source image before layout.
How to verify the result
Example: check whether 2550 × 3300 pixels is enough for an 8.5 × 11 inch page.
Check: This is a calculation aid, not marketplace certification or a print proof.
Frequently asked question
Does changing metadata increase real DPI?
No. Effective print DPI depends on actual pixel dimensions divided by print size.