Why not just sideload the PDF directly?

Kindle Scribe will show a PDF, but the text doesn't reflow. You're stuck pinching to zoom because the page is laid out for an 8.5x11 sheet, not a 10.2-inch e-ink screen. Converting to EPUB lets the Scribe resize the text to whatever font size you choose.

Will my annotations carry over?

No. Annotations live in the original PDF file format. After converting, you start with a clean EPUB. The Scribe's pen still works on the new file.

Does Send to Kindle accept EPUB?

Yes — as of late 2022 Amazon's Send to Kindle service accepts EPUB and converts it to the native AZW3/KFX format on their end. You just email the .epub or drop it into the Send to Kindle web page.

No. The conversion happens in your browser using pdf.js and JSZip. The only upload involved is when you choose to send the finished EPUB to your @kindle.com address — that's between you and Amazon.

Convert PDF for Kindle Scribe

Drop a PDF and get back an EPUB that the Kindle Scribe actually treats like a book — text reflows, font size works, the table of contents jumps, the pen still annotates. No more pinch-zoom on a 10.2-inch screen built for typeset prose.

Got a scan? If you can't select text inside the PDF, it's an image — there's no text to reflow. Run Scanned PDF to Text first, then come back here.

Drop your PDF here

or click to browse

Chapter splitting

The Scribe is a great reader. PDFs aren't great files for it.

The Kindle Scribe ships with a 10.2-inch e-ink screen, slightly smaller than a US Letter PDF page. So if you sideload a typical 8.5x11 PDF, the page renders shrunk-to-fit and the body text comes out around 9 pt on a 1872-pixel display. You can pinch to zoom, but the moment you turn the page you're back to tiny. Converting the PDF into a reflowable EPUB fixes this: you pick the font size on the Scribe, and the text rewraps to fill the screen.

How to get the EPUB onto your Scribe

Hit convert above. An EPUB downloads.
Find your Send to Kindle email address — it's in the Kindle app under Settings → "Your Account" or on amazon.com/sendtokindle.
Email the EPUB to that address. The Scribe pulls it down within a minute or two. (Free Wi-Fi tier limits attachments to 50 MB; Personal Document size limits are 200 MB.)
Alternative: the Send to Kindle web page accepts EPUB drops directly. No email step.

What works well

Novels and prose books. Single-column, text-heavy PDFs come out clean.
Research papers. One-column papers reflow beautifully. Two-column papers (most journals) tend to interleave columns — try "Single chapter" and accept that the reading order needs a touch of skipping.
Reports and white papers. Auto-detect catches the section headings.

What doesn't transfer

Footnotes appear inline rather than as popups.
Margin notes you wrote in another reader. Annotations are PDF-specific.
Heavily styled layouts (cookbooks, art books) — the visual design is the point of those, so they're better sideloaded as PDFs and viewed with the Scribe's zoom.

Why not just use Kindle Convert / Calibre?

You can. Both work. The difference is friction: Calibre is a 200 MB desktop install plus plugins; Kindle Convert is a Mac/Windows-only tool. This page is a URL. Drop a file, get a file, done.

Nothing uploads

The PDF stays in your browser. The conversion runs locally using pdf.js and JSZip. If you're sending a sensitive document (legal, medical, manuscript drafts) this matters — the only time anything leaves your machine is when you choose to email the resulting EPUB to your @kindle.com address.