Booklist Export reads book metadata from your signed-in Amazon.com library only when you start an export. Titles, authors, book identifiers and library data stay in this browser and your downloaded files. We do not receive your Amazon password, reading content or browsing history. Clear saved books removes the local inventory; browser storage removal or uninstalling also removes local data. Purchase verification sends a random license credential over HTTPS; we store its hash, random device IDs and Stripe customer, checkout and payment status identifiers. Stripe processes payment and billing contact information. Cloudflare hosts billing and processes network requests, including IP addresses. The billing service keeps temporary hashed IP rate-limit counters to prevent abuse; it does not collect precise location. Library data is never sent to billing. We do not sell data or use advertising analytics. We comply with the Chrome Web Store User Data Policy, including Limited Use requirements. Contact mrlightsource@gmail.com for help or billing-data deletion; financial records may need to be retained.