Free publishing tool
Print Image Resolution Checker
Choose an image and page size to estimate its effective print resolution. The image is processed 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 image guidance.