---
name: "pdf123-ebook-to-pdf"
description: "Convert an EPUB/MOBI/AZW3 eBook into a PDF. Runs the PDF123 \"eBook to PDF\" tool (pdf123.xyz) over its REST API with curl, no account needed. Use when the user wants this done to their file. Also known as: 电子书转 PDF, Libro electrónico a PDF, ई-पुस्तक से PDF, كتاب إلكتروني إلى PDF, eBook para PDF, Buku elektronik ke PDF, Livre numérique vers PDF, Электронная книга в PDF, 電子書籍からPDF, E-Book in PDF, 전자책을 PDF로, Sách điện tử sang PDF, E-kitaptan PDF'e, 電子書轉 PDF, Ebook in PDF, หนังสืออิเล็กทรอนิกส์เป็น PDF, E-book na PDF, Електронна книга в PDF, E-book naar PDF, eBook ke PDF, E-bok till PDF, Ηλεκτρονικό βιβλίο σε PDF, Електронна книга към PDF, Llibre electrònic a PDF, Kitabu pepe kuwa PDF."
compatibility: "Needs curl 7.76+ and outbound HTTPS to pdf123.xyz, or PDFX_API_BASE pointing at a self-hosted pdfx-server."
---

# eBook to PDF (PDF123)

Convert an EPUB/MOBI/AZW3 eBook into a PDF.

Web version: https://pdf123.xyz/ebook-to-pdf · All tools: https://pdf123.xyz/skills/pdf123.md

## When to use

- Print a DRM-free EPUB for annotation as PDF
- Get a PDF from FB2 when the next reader only takes PDF
- Reflow a MOBI you are allowed to convert

## Run it

Replace the sample file names and values with the user's, then run:

```bash
API="${PDFX_API_BASE:-https://pdf123.xyz}"
curl -sS --fail-with-body -X POST "$API/api/v1/convert/ebook/pdf" \
  -F "fileInput=@input.epub" \
  --output-dir "pdf123-output/$(date +%Y%m%d-%H%M%S)" --create-dirs -OJ -w '%{filename_effective} %{content_type}\n'
```

## Inputs

Everything is `multipart/form-data`. The command above already sends each field with its default; keep them all and change only the values the user asked for, since some endpoints reject a missing optional field.

| Field | Type | Required | Default | Notes |
| --- | --- | --- | --- | --- |
| `fileInput` | file | yes | | .epub, .mobi, .azw3, .fb2 (one file) |

## Result

curl saves the result in a new `pdf123-output/<timestamp>/` directory under the server's file name and prints its path and content type. Several output files come back as one ZIP. Tell the user where the file is.

## Limits

- No DRM removal
- No paper or font controls
- Not OCR
- Upload limit on this website: 500 MB per file, sent in chunks above about 95 MB. A single direct API request body is capped at 100 MB.

## Errors

- A non-zero curl exit means the request failed. The saved file then holds `application/problem+json`; read it and report its `detail` to the user instead of retrying blindly.
- `413`: the upload exceeds 100 MiB. `429`: wait for `Retry-After` seconds, then retry once.
- Send `X-API-KEY: $PDFX_API_KEY` only if the user has a PDF123 API key; anonymous calls work without it.

## Privacy

Files are uploaded to the API host, processed, and deleted once the response is sent. For confidential files, ask before uploading, or use a self-hosted server via `PDFX_API_BASE`.