MOBI → PDF

MOBI to PDF

Turn Kindle-format ebooks into a universal PDF.

Convert MOBI, AZW3 and KF8 ebooks into PDFs anyone can open. Great when you want to print a book, annotate on an iPad, or share a chapter with someone who doesn't use Kindle.

Files auto-deleted within 1 hour · no signup for basic use

How it works

Four calm steps.

  1. 01

    Drop your file

    Drag your MOBI or AZW3 file onto the upload card, or click to pick it from your device. You can also paste a link to a file hosted online.

  2. 02

    Choose page style

    Paper size, margins, font family and size. We recommend serif at 11pt on A5 for a book-like feel.

  3. 03

    Let us do the work

    Our engine renders the ebook with pagination and a hyperlinked TOC in a few seconds. Nothing leaves the encrypted pipeline while it runs.

  4. 04

    Download the result

    Save the PDF to your device, share a temporary link, or send it straight to Google Drive or Dropbox. Files are wiped from our servers within one hour.

Why MOBI to PDF

Built to be the last mobi to pdf tool you try.

Universal

Everyone can open a PDF – no Kindle app, no Amazon account.

Quality that holds up

Chapters, footnotes and images render cleanly with a real TOC.

Private by default

Uploads travel over TLS, files are encrypted at rest, and every trace is deleted within 60 minutes. We do not read, index, or train on your documents.

No signup required

The free tier handles most day-to-day work. You only create an account if you want history, larger files, or batch automation.

FAQ

Questions people ask.

Are DRM'd Kindle books supported?

No. Only unprotected MOBI files (books you created, public-domain classics, etc.) work here.

Can I control font size?

Yes – 8pt to 16pt, applied consistently across the book.

Is PDF Books Lib really free?

Yes. The free tier covers everyday use – you can convert several files per hour without an account. Pro unlocks larger uploads and batch jobs.

What happens to my files?

They live in an encrypted staging area for at most one hour, then they are permanently deleted. Nobody on our team can browse them.

Do I need to install anything?

No. Everything runs in your browser against our servers – Windows, macOS, Linux, iOS and Android are all supported.

Is Universal free to use?

Yes. Universal is free on the no-signup tier with no watermark added to your files. A paid plan only lifts batch and file-size limits for heavy users.

Do I need to install software or create an account for Universal?

No. Universal runs entirely in your browser - there is nothing to download and no account is required to get started.

Are my files private when I use Universal?

Yes. Uploads travel over an encrypted connection, are processed in an isolated pipeline, and are permanently deleted from our servers within 60 minutes. We never read, index or train on your documents.

What is the largest file Universal can handle?

On the free tier Universal accepts files up to 100 MB. Larger documents are supported on the paid plan, or you can split a big file first.

Does Universal work on mobile and every browser?

Yes - Universal is fully responsive and works in Chrome, Safari, Edge and Firefox across Windows, macOS, Linux, iOS and Android.

Will Universal keep my original formatting and quality?

Universal preserves fonts, images, tables and layout as faithfully as the PDF format allows, so the result looks like your source file.