# pdf2ereader

> Free PDF to EPUB converter for Kindle, Kobo and any e-reader. Runs in your browser, so your file is never uploaded. No accounts, no copies kept.

pdf2ereader converts PDF files into EPUB ebooks for Amazon Kindle devices. The
conversion runs entirely as JavaScript in the visitor's browser: the file is read
from local disk, parsed with pdf.js, rebuilt into chapters and paragraphs, and
packaged as an EPUB in memory. There is no upload endpoint, no server-side
processing and no storage. The site is static.

## Key facts

- Output format: EPUB 3 (with an NCX table of contents for Amazon's ingester).
- MOBI and AZW3 are not produced. Amazon stopped accepting MOBI for new documents
  in 2022, and Send to Kindle accepts EPUB natively.
- Scanned (image-only) PDFs are detected and rejected; the tool does not do OCR.
- No accounts, no cookies, no file size charges. Practical size limit ~300 MB,
  bounded by browser memory.
- Chapters come from the PDF's bookmarks when present, otherwise from heading
  detection based on relative font size.
- Running heads, running feet and page numbers are detected by repetition across
  pages and removed.

## Pages

- [Converter](https://pdf2ereader.com/): the tool itself.
- [PDF to EPUB](https://pdf2ereader.com/pdf-to-epub): the format, what the output contains, what gets stripped.
- [PDF to Kindle](https://pdf2ereader.com/pdf-to-kindle): Send to Kindle, the approved-sender list, why MOBI is rejected.
- [PDF to Kobo](https://pdf2ereader.com/pdf-to-kobo): USB transfer, KEPUB, and why Kobo needs no conversion step.
- [How it works](https://pdf2ereader.com/how-it-works): the extraction and reconstruction pipeline, and its known limits.
- [FAQ](https://pdf2ereader.com/faq)
- [Privacy](https://pdf2ereader.com/privacy): why no upload happens, and how to verify it.
- [Terms](https://pdf2ereader.com/terms)

## Guides

- [Which file formats a Kindle actually accepts](https://pdf2ereader.com/guides/kindle-supported-formats): EPUB, PDF, DOCX and the rest. What Amazon takes today, what it converts behind the scenes, and why MOBI stopped working.
- [Three ways to get an EPUB onto your Kindle](https://pdf2ereader.com/guides/send-epub-to-kindle): The web uploader, the email address and the USB cable. Which to use, and the setup step that catches everyone out.
- [Getting a better conversion out of an awkward PDF](https://pdf2ereader.com/guides/fix-a-bad-pdf-conversion): Run-together paragraphs, missing chapters, page numbers in the prose. What causes each one, and what you can do about it.
- [Why PDFs read so badly on a Kindle](https://pdf2ereader.com/guides/why-pdfs-read-badly-on-kindle): Fixed pages versus reflowable ones, why that matters so much on a six-inch screen, and what converting actually fixes.