Does Kindle's Ask this Book work with your own files?

When Amazon launched Ask this Book (alongside "Story So Far" and chapter recaps), it proved something important: having an AI assistant right where you read is genuinely useful. Asking what happened three chapters ago or clarifying a dense argument without leaving the reader makes books more accessible.

However, Amazon's implementation came with three hard boundaries. First, it only works on books purchased or borrowed through Amazon's Kindle Store — personal documents, sideloaded EPUBs, and PDFs from outside the store are completely ignored. Second, it is locked to newer hardware released in 2024 and later. Third, authors and publishers were given no ability to opt in or opt out, sparking public concern from the Authors Guild over copyright, data ingestion, and model training.

Resage is built from the ground up for a different premise: you should be able to read and discuss any file you legitimately own, with full-page fidelity and local-first privacy.

The three gaps in Amazon's walled garden

Amazon's reading features are designed to serve Amazon's storefront. That creates three immediate pain points for readers who bring their own material:

• 1. The format & catalog wall: If you bought an EPUB from an independent bookstore, downloaded a public-domain classic from Standard Ebooks, or read academic PDF preprints from arXiv, Ask this Book is absent. Amazon's "Send to Kindle" service converts your files for reading, but deliberately excludes them from AI discussion and recap features.
• 2. Planned obsolescence for hardware: Despite the AI responses generating on remote cloud servers, Amazon restricted Ask this Book to 2024 and newer Kindle devices (such as the 2024 Paperwhite, Colorsoft, and Scribe). If you own an older Oasis, Voyage, or standard Paperwhite, you are left out.
• 3. The Authors Guild controversy & author consent: In December 2025, the Authors Guild publicly issued a statement questioning Amazon's rollout of "Ask this Book." Authors and publishers were never asked for permission to ingest their books into the AI pipeline, nor given an opt-out mechanism. This raised serious concerns across the literary community regarding fair use, copyright boundaries, and opaque AI ingestion.

How Resage approaches your reading

Resage is not an e-commerce storefront with an AI layer. It is a dedicated Mac reader built for the files you already own:

Your files stay on your device: Your books remain on your Mac and sync exclusively through your personal iCloud container. The entire file is never uploaded to an AI server. When you ask a question, only the few passages necessary to answer are sent, used solely for that single response, and immediately discarded. Your text is never used to train AI models.

Native support for your formats: Resage opens PDF (preserving the exact fixed layout, columns, and diagrams), EPUB, Word (DOCX), TXT, Markdown, and DRM-free MOBI and AZW3 files. Scanned pages are automatically recognized locally using Apple's on-device Vision framework without sending images to the cloud.

A learner model that compounds: Instead of ephemeral summaries that vanish when you close a book, Resage maintains a private learner profile. It notes what concepts you understand, where you got stuck, and which explanations resonated with you. That understanding carries across every book and paper in your library, and you can inspect, edit, or reset the profile at any time in Settings.

A note on DRM and legal boundaries

Resage strictly respects copyright and digital rights management. Resage does not strip, bypass, or remove DRM from copy-protected files. Books purchased with Amazon's proprietary DRM cannot be opened in Resage (no third-party app can legally open them). Resage is built for your open-format EPUBs, PDFs, personal documents, and DRM-free MOBI and AZW3 files.

Where Kindle Ask this Book wins

• Integrated e-ink hardware: If you read exclusively on a 2024+ Kindle e-reader in direct sunlight, Amazon's built-in feature offers convenient, battery-friendly access without carrying a laptop.
• No added subscription cost: Ask this Book is included directly with eligible Amazon Kindle purchases and titles from Amazon's subscription reading programs.
• Spoiler-free fiction recaps: Amazon's "Story So Far" feature is specifically tuned for popular fiction titles in their store to catch up on plot points up to your current reading percentage.

The verdict

Common questions

Can I use Kindle's Ask this Book on my own EPUB or PDF files?

No. Amazon's Ask this Book, Story So Far, and Recap features only work on eligible titles purchased or borrowed through the Amazon Kindle Store. Sideloaded documents and personal files sent via Send to Kindle do not support Ask this Book. Resage is designed specifically to fill this gap, providing page-anchored AI discussions on your own EPUBs, PDFs, Word documents, and DRM-free files.

Why doesn't Ask this Book work on older Kindle devices?

Amazon restricted Ask this Book to hardware released in 2024 and later (such as the 2024 Paperwhite, Colorsoft, and Scribe), even though the AI generation happens in the cloud. Older Kindle devices do not receive the feature. Resage runs natively on any Apple Silicon Mac running macOS 14.0 or newer.

Can Resage open DRM-protected Kindle books?

No. Resage does not remove or bypass DRM protection. Books purchased with Amazon's proprietary DRM cannot be opened. However, DRM-free MOBI, AZW, and AZW3 files work seamlessly in Resage alongside EPUBs and PDFs.

How does Resage handle privacy compared to Amazon's AI features?

Resage follows a strict local-first privacy standard: your books stay on your Mac and in your own iCloud container. Entire files are never uploaded; only the specific passages needed to answer a question are sent to the AI, used solely for that answer, and never used to train models. This directly addresses the concerns raised by the Authors Guild regarding transparency and data ingestion in commercial AI reading features.

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