Free tool
to EPUB
Turn a Substack article into a clean, well-formatted EPUB, read it on your e-reader or print it.
Turn Substack posts into EPUB files you can keep and read offline on Kindle, Kobo, Boox, and more.
How it works
Paste a Substack or Medium link
Or switch to Paywalled article mode and paste the full page if the post is subscriber-only.
Convert to EPUB
Inkbox extracts the article, removes clutter, and builds a clean EPUB file.
Download and read
Open it in your e-reader app, or use Send to Kindle if you want email delivery.
Frequently asked questions
Can I convert paid Substack posts?
If you are subscribed and can read the post in your browser, use Paywalled article mode and paste the full page.
Is the free EPUB converter really free?
Yes. No login is required. Free use is limited to 3 EPUB conversions per day.
Which sites can I convert without an account?
Substack and Medium. Sign up for a free Inkbox account to convert more publishers and unlock higher limits.
What does the EPUB look like?
Inkbox strips clutter and keeps the article body, images when available, and clean formatting so it reads well on e-readers and apps that open EPUB files.
Can I convert a subscriber-only post?
Yes, if you can already read it. Use Paywalled article mode and paste the full page from your browser while logged in.