Free publishing tool
KDP Cover PDF Size Checker
Choose your paperback settings and compare a one-page cover PDF with the expected full-wrap dimensions. The file stays in your browser.
Create an account to use this tool
The tool is free to use after sign-up. Your account lets you return to the same tool after verification; a paid subscription is only required for full book generation.
This is a planning aid, not an Amazon approval or a replacement for KDP Print Previewer. Check your final files and print settings in KDP.
Source: Amazon KDP paperback cover guide.