Offline PDF Converter

Convert files to PDFwithout uploading anything.

PDFBook is a desktop app for Windows, macOS, and Linux that converts EPUB, Word (DOCX), Markdown, HTML, text, comic books (CBZ/CBR), and DRM-free Kindle (MOBI, AZW, AZW3, KF8) files to PDF entirely on your device. Unlike cloud converters such as CloudConvert or Zamzar, your files are never uploaded to a server, so private documents stay private. Converted PDFs drop straight into your library, ready to read with flip mode and PDFBook's dual rendering engines.

Download PDFBook freeSee pricing

Converts offline, nothing uploaded

Every conversion runs locally on your computer. Your documents never leave the device and never touch a third-party server, so confidential files, manuscripts, and personal ebooks stay private.

EPUB, Word, Kindle, comics, and more

Convert EPUB and KEPUB, Word DOCX, Markdown, HTML, plain text, comic archives (CBZ and CBR), and DRM-free Kindle formats (MOBI, AZW, AZW3, KF8) to clean PDFs, all in one place.

Fast, batch, and built in

Convert multiple files at once with no internet round trip. No upload wait, no file-size cap from a web service, and no queue: it is as fast as your machine.

Private by design, no account

No sign-up, no telemetry, no cloud. PDFBook converts and stores everything locally, the same privacy-first approach as the rest of the app.

Your files never leave your computer

How PDFBook converts your files to PDF

  • Convert EPUB and Kobo KEPUB ebooks to PDF offline
  • Convert Word (DOCX) documents to PDF without uploading to a server
  • Convert DRM-free Kindle MOBI, AZW, AZW3, and KF8 books to PDF
  • Convert comic archives (CBZ, CBR) to PDF for reading and archiving
  • Convert Markdown, HTML, and plain text files to PDF
  • Batch-convert several files in a single run
  • Converted PDFs land directly in your PDFBook library
  • Everything runs on-device: no upload, no account, no telemetry
  • Works fully offline on Windows, macOS, and Linux
  • Free tier supports 50 books; Lifetime is $89 once

Convert any file to PDF, privately.

EPUB, Word, Kindle, comics, and more, converted on your device with nothing uploaded. Free for 50 books, $89 once for Lifetime.

Download PDFBook freeSee Lifetime ($89)

Frequently asked questions

How do I convert EPUB to PDF offline?+
Install PDFBook (Windows, macOS, or Linux), open the Converter, and drop in your EPUB file. PDFBook converts it to PDF entirely on your device and adds it to your library. Nothing is uploaded, so it works with no internet connection and keeps your ebook private.
Can I convert Word (DOCX) to PDF without uploading it?+
Yes. PDFBook's converter turns DOCX files into PDF locally on your computer. Unlike online converters that require uploading your document to a server, PDFBook never sends the file anywhere, which is ideal for contracts, manuscripts, and other confidential documents.
What file formats can PDFBook convert to PDF?+
PDFBook converts EPUB and KEPUB, Word DOCX, Markdown (.md), HTML, plain text (.txt), comic archives (CBZ and CBR), and Kindle formats (MOBI, AZW, AZW3, KF8) to PDF. All conversion happens on your device.
Is converting files to PDF in PDFBook private and safe?+
Yes. PDFBook is local-first: the converter processes files on your machine with no upload, no account, and no telemetry. Your documents never reach a third-party server, unlike cloud converters such as CloudConvert, Zamzar, or online ilovepdf tools.
Can I convert Kindle (MOBI/AZW) books to PDF?+
Yes, for DRM-free files. PDFBook converts MOBI, AZW, AZW3, and KF8 books to PDF on your device. Files protected by DRM are skipped, since PDFBook does not remove copy protection.
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