Trusted by 500+ Authors

Fix Your KDP Margin & Bleed Errors.

The professional-grade PDF utility for Amazon KDP authors. Upload your manuscript and we will handle the math.

Drag and drop your PDF here or click to browse.

Start your free KDP Health Scan. No credit card required.

Max 650MB (KDP limit). Processed locally in your browser.

Stop wasting hours on manual formatting.

Rejected

Spine text clipped in the gutter

Approved

Aligned spine & safe margins

Step 1

Drag your manuscript PDF.

Step 2

We check 15+ KDP print requirements instantly.

Step 3

One click to fix all errors and get your print-ready file.