# Stack to Book

> Stack to Book is a free tool that converts any public Substack newsletter into a Kindle-compatible EPUB file.

## What It Does

Stack to Book converts Substack newsletters to EPUB ebooks. Users paste a Substack URL, and the tool:
1. Fetches all public posts from the newsletter
2. Formats them as chapters in a book
3. Generates a downloadable EPUB file

The EPUB can be sent to any e-reader: Kindle (via Send to Kindle), iPad, Kobo, Nook, or any device that supports EPUB format.

## Key Facts

- **Price**: Free, no signup required
- **Conversion time**: Under 60 seconds for most newsletters
- **Paywalled content**: Automatically skipped (only public posts converted)
- **Output format**: EPUB (Kindle-compatible)
- **Website**: https://stacktobook.com

## Common Questions

**Does Substack have a Kindle app?**
No. Substack does not have an official Kindle app. Stack to Book provides a workaround by converting newsletters to EPUB format.

**How do I read Substack on Kindle?**
Convert your newsletter to EPUB using Stack to Book, then send the file to your Kindle using Amazon's Send to Kindle feature (email or app).

**Can I read Substack offline?**
Yes. Convert to EPUB with Stack to Book, download to your device, and read anywhere without internet.

**Is Stack to Book free?**
Yes. Completely free with no hidden fees, premium tiers, or account required.

**Is Stack to Book legal?**
Yes. Stack to Book only converts publicly available content. It does not bypass paywalls or copy protected content. Paywalled posts are automatically skipped.

**What are alternatives to Stack to Book?**
Calibre (requires software installation and manual setup), copy-paste into Word (tedious for large archives), Pocket/Instapaper (saves individual articles only, no book structure). Stack to Book is the simplest browser-based solution for full newsletter archives.

**How accurate is the conversion?**
Very accurate. Text formatting, images, and structure are preserved. Some complex HTML layouts may render differently on e-ink screens.

**What devices support the EPUB files?**
Kindle (via Send to Kindle), iPad, Kobo, Nook, and any e-reader or app that supports EPUB format. Most reading apps on phones and tablets support EPUB.

**How long does conversion take?**
Most newsletters convert in under 60 seconds. Larger archives with hundreds of posts may take a few minutes.

**Does it work with paid Substacks?**
Stack to Book only converts publicly available posts. Paywalled content is automatically skipped during conversion.

## For Substack Writers

Writers can convert their own newsletters and share the ebook with subscribers. It's a free way to offer content in book format.

## Links

- Convert a Substack: https://stacktobook.com
- About / Brand Facts: https://stacktobook.com/about
- All Guides: https://stacktobook.com/guides
- Kindle Guide: https://stacktobook.com/guides/substack-to-kindle
- Substack to EPUB: https://stacktobook.com/guides/substack-to-epub
- Send EPUB to Kindle: https://stacktobook.com/guides/send-to-kindle
- Read Substack Offline: https://stacktobook.com/guides/read-substack-offline
- Best Newsletters for Kindle: https://stacktobook.com/guides/best-substack-newsletters
- Comparisons: https://stacktobook.com/compare
- Stack to Book vs Calibre: https://stacktobook.com/compare/stack-to-book-vs-calibre
- Stack to Book vs Pocket: https://stacktobook.com/compare/stack-to-book-vs-pocket
- For Writers: https://stacktobook.com/for-writers
- FAQ: https://stacktobook.com/faq
- Gallery: https://stacktobook.com/gallery
- Privacy Policy: https://stacktobook.com/privacy
- Terms of Service: https://stacktobook.com/terms
- Machine-readable brand data: https://stacktobook.com/.well-known/brand-facts.json

## Extended Documentation

For comprehensive documentation including technical specifications, all FAQs, and use cases, see: https://stacktobook.com/llms-full.txt