PDF to MOBI Converter

Convert PDFs to MOBI eBook format for free, right in your browser. No Kindle app needed, no account. Your file stays on your device.

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Conversion Options
Conversion Info

Upload a PDF file and click convert. The generated MOBI file cannot be previewed directly in the browser.

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eBook Converter

PDF to MOBI

Convert static PDF pages and layout structures to reflowable Mobipocket (MOBI) eBooks for Kindle devices.

Local eBook Compiler
STEP 01

Select PDF

Choose your PDF file or drag and drop it into the conversion zone.

STEP 02

Adjust Style

Set target base font scaling sizes, upload custom cover graphics, and configure margins.

STEP 03

Map Chapters

Define chapter header triggers to automatically generate a structured eBook index layout.

STEP 04

Generate MOBI

Click Convert to build reflowable page layouts and download the compiled MOBI eBook.

Your Privacy Matters

All processing stays in your browser

No Server Uploads

Files never leave your device

Auto-Cleared

Data removed when you close

Capabilities

PDF to MOBI Features

eBook Compilation

Reflowable Page Layouts

Converts fixed PDF page structures into reflowable text content, adjusting display layouts dynamically to fit any Kindle screen size.

Chapters Index Mapping

Scans document headers to build a native hierarchical Table of Contents (TOC) index for easy eReader navigation.

DRM-Free eBook Compilation

Creates clean, standard DRM-free MOBI books compatible with Kindle, Calibre, and all standard mobipocket reader clients.

Cover Sheet Integration

Automatically uses the first PDF page as the cover art or allows uploading custom image sheets.

100% Client-Side Privacy

Your PDF documents, cover images, and compiled Mobipocket eBook assets are processed entirely within your local browser memory sandbox. We guarantee offline conversion with zero server uploads or external network transfers.

Support

Common Questions Answered

Quick help
Q1 Will the converted MOBI file work on Kindle e-readers?
Yes, the output is formatted as a standard Mobipocket eBook package compatible with all Amazon Kindle devices.
Q2 How does the reflowable text feature work?
The parser extracts the raw text blocks and formatting to strip away fixed page boundaries, letting the text adapt to Kindle screen orientations.
Q3 Can I preserve all formatting and fonts?
Basic font sizes, bold/italic markers, and list elements are preserved, while fixed columns are merged into single-column flows for readability.
Q4 What happens if the PDF has tables?
Tables are converted into responsive block elements or simple linear layout flows to avoid layout breaks on narrow screens.
Q5 Does the eBook compilation send data to third-party APIs?
Absolutely not. The entire conversion, text extraction, cover layout compilation, and MOBI packaging run entirely client-side inside your browser sandbox.