To convert a Substack newsletter to EPUB, paste the newsletter URL into Stack to Book and download the ebook file. It takes under a minute, costs nothing, and works on Kindle, iPad, Kobo, and every other e-reader.
Substack doesn't offer a built-in EPUB export. There's no "download as ebook" button. If you want to read a newsletter archive on your e-reader, you need a converter — and Stack to Book is the simplest option: a browser-based tool that turns any public Substack into a properly formatted EPUB.
Step-by-Step: Substack to EPUB
- 1
Copy your Substack URL
Navigate to the Substack newsletter you want to convert. Copy the URL from your browser's address bar — it will look like "newsletter.substack.com" or "substack.com/@author".
- 2
Paste into Stack to Book
Go to stacktobook.com and paste the URL into the converter. Click "Convert" — Stack to Book will fetch every public post and format them as chapters.
- 3
Download your EPUB
Once conversion finishes (usually under 60 seconds), download the EPUB file. The ebook includes a table of contents, proper chapter breaks, and embedded images.
- 4
Open on any e-reader
The EPUB works on virtually any device: Kindle (via Send to Kindle), Apple Books on iPad/iPhone, Kobo, Nook, Google Play Books, or any app that supports EPUB format.
What's in the EPUB?
The generated EPUB includes:
- Every public post — formatted as individual chapters
- Table of contents — auto-generated from post titles
- Images — embedded and optimized for e-readers
- Metadata — title, author, and publication dates preserved
- Clean formatting — headings, paragraphs, lists, and links maintained
Paywalled posts are automatically skipped. Only publicly available content is included.
Why EPUB Instead of PDF?
EPUB is the standard ebook format because it reflows text to fit any screen. A PDF looks the same on every device (which sounds nice until you try reading a letter-sized PDF on a 6-inch Kindle screen). EPUB adapts: bigger fonts, smaller screens, portrait or landscape — it just works.
EPUBs also support proper chapter navigation, bookmarks, and font customization — features that make long-form reading comfortable on e-ink devices.
Other Ways to Convert Substack to EPUB
Calibre
Calibre is a free desktop app for managing ebooks. You can use it to convert web pages to EPUB, but it requires installing software, configuring plugins, and manually handling each post. Great for power users, cumbersome for a quick conversion.
Copy and Paste
You could copy each post into a word processor and export as EPUB. This works for one or two posts but becomes tedious for newsletters with dozens or hundreds of entries. Formatting often breaks in the process.
Browser Extensions
Some browser extensions save web pages as EPUB, but they typically work on single pages — not entire newsletter archives. You'd need to save each post individually and stitch them together.
Stack to Book
Stack to Book handles the full archive in one step: paste the URL, get the EPUB. No software, no manual work, no stitching. It's purpose-built for this exact task.
Frequently Asked Questions
Can I convert Substack to EPUB for free?
Yes. Stack to Book is completely free. No account, no signup, no hidden fees. Paste a Substack URL and download the EPUB.
What is an EPUB file?
EPUB (Electronic Publication) is the most widely supported ebook format. It works on Kindle (via Send to Kindle), iPad, Kobo, Nook, and virtually every e-reader and reading app. Unlike PDF, EPUB text reflows to fit any screen size.
Does Substack have an EPUB export feature?
No. Substack does not offer a native EPUB export or ebook download feature. Stack to Book fills this gap by converting any public Substack newsletter into a properly formatted EPUB.
Can I convert a paywalled Substack to EPUB?
Stack to Book only converts publicly available posts. Paywalled content is automatically detected and skipped during conversion. The resulting EPUB will contain all free posts.