European Accessibility Act (EAA) • Amazon KDP Fee Optimizer
Client-Side EPUB 3 Validator & One-Click Fixer
Unpack, audit, fix, and re-compress your digital publication entirely inside your browser. Your manuscript files never leave your computer.
Drop your .epub file here or browse
Supports EPUB 2.0 and EPUB 3.3. Audits package manifest, EAA metadata, XHTML tags, and interior image weights.
Select Local EPUB
Zero files uploaded•100% In-Browser Memory•Instant Local Analysis
Royalty Recovery Calculator
How Much Is Amazon Quietly Deducting From Your Royalties?
On Amazon KDP's 70% royalty tier, $0.15 is deducted per megabyte on every copy sold.
EPUB File Size14 MB
2 MB (Text)20 MB (Box Set)40 MB (Art heavy)
Estimated Monthly eBook Sales150 copies
25 copies500 copies1,500+ copies
Projected Annual Savings
+$3096.00
Additional royalty retained directly in your account each year.
Current KDP Delivery Fee:$2.1 / copy
After PreFlight Compression:$0.38 / copy
Net Gain per Copy Sold:+$1.72
Transparent Licensing
Simple Plans for Indie Authors & Book Formatters
100% private in-browser Web Worker processing. No upload limits.
Free Audit
Full file diagnostics & health score.
$0/ forever
- Full EPUB 3 & EPUBCheck scan
- EAA accessibility compliance audit
- Amazon KDP delivery fee breakdown
- Plain-English error explanations
7-Day Rescue PassPurchase Rescue Pass
Single Book Rescue Pass
For authors releasing a new title.
$9one-time payment
- Unlimited auto-fixes for 1 book title
- EAA schema metadata injection
- KDP fee image compressor
- 14-day money-back guarantee
Pro Author & Formatter
Unlimited titles for freelance formatters.
$10/ month or $79/year
- Unlimited EPUB titles & backlist fixes
- Batch canvas image compression
- EAA Conformance Audit PDF reports
- Client white-label validation slips