PDF to MOBI Converter

Convert PDF to MOBI online, for free.

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By proceeding, you confirm you own the rights to the files you upload and agree to our Terms of Use.

Advanced settings (optional)

Optimize for e-book reader

Optimizes layout and formatting for a specific e-reader. Choose the one that matches your device.

Enable Heuristic processing?

Attempts to detect and correct common styling problems in the source file. Experimental, so check the output before relying on it.

Add margins (cm)

Add margin (0-10 cm)

Rescale all fonts (pts)

The base font size is the size of the bulk of the text in your document. Set it and we rescale every font size proportionately, so the most common size becomes your chosen value and headings, captions, and other text scale with it. Select "No Change" to keep the original sizes.

Replace Unicode characters with ASCII?

Replace Unicode characters with ASCII? For example, "Mikhail Gorbachiov" will be replaced by "Mikhail Gorbachiov."

For example, "Mikhail Gorbachiov" will be replaced by "Mikhail Gorbachiov."

Specify input file encoding

Sets the character encoding of the input file. Use this if your text shows up as garbled symbols, which happens when a file has no encoding declaration or declares the wrong one. This overrides any encoding declared in the file, so leave it on "Auto" unless you're fixing a specific problem.

Change e-book title

Enter a title (maximum 100 characters) for the output file. This is stored in the file's metadata and is what e-readers display in a library list, rather than the filename. Leave it empty to use the source file's title, if it has one.

Change e-book author-name

Enter Author Name, maximum 100 characters

How to Convert PDF to MOBI?

Click the “Choose Files” button to select your PDF files.
Click the “Convert to MOBI” button to start the conversion.
When the status change to “Done” click the “Download MOBI” button

Easy to Use

Simply upload your PDF files and click the convert button. You can also batch convert PDF to MOBI format.

Best Quality

We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional, look for the icon).

Free & Secure

Our PDF to MOBI Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically deleted after 8 hours.

What is a PDF (Portable Document Format) file?

The Portable Document Format (PDF) is a universal file format that comprises characteristics of both text documents and graphic images which makes it one of the most commonly used file types today. The reason PDF is so widely popular is that it can preserve original document formatting. PDF files always look identical on any device or operating system.

How to open a PDF file?

Most people head right to Adobe Acrobat Reader when they need to open a PDF. Adobe created the PDF standard and its program is certainly the most popular free PDF reader out there. It's completely fine to use, but I find it to be a somewhat bloated program with lots of features that you may never need or want to use.

Most web browsers, like both Chrome and Firefox, can open PDFs themselves. You may or may not need an add-on or extension to do it, but it's pretty handy to have one open automatically when you click a PDF link online. I highly recommend SumatraPDF or MuPDF if you're after something a bit more. Both are free.

Developed by: ISO

Initial Release: 15 June 1993

Useful links:

https://en.wikipedia.org/wiki/Portable_Document_Format

https://acrobat.adobe.com/us/en/why-adobe/about-adobe-pdf.html

What is a MOBI (Mobipocket eBook) file?

Mobipocket eBook (MOBI) is an e-book format built for handheld devices, storing text as compressed HTML so that it reflows to fit small screens. Amazon bought Mobipocket in 2005 and made MOBI the foundation of the original Kindle format. It supports bookmarks, annotations, and a table of contents, but not the complex layouts or embedded fonts that EPUB allows. Amazon retired MOBI support in 2022.

How to open a MOBI file?

Calibre is the most capable option: it reads MOBI, manages your library, and converts between every common e-book format.

Older Kindle e-readers and the Kindle desktop app still open MOBI files copied over USB, and mobile apps such as FBReader and Moon+ Reader handle them too. Because Amazon’s Send to Kindle service no longer accepts MOBI, converting your library with our MOBI to EPUB tool is worth doing.

Developed by: Mobipocket SA, later Amazon.com

Initial Release: 2000

Convert other files to MOBI format

Freeconvert.me can convert your other files to MOBI format:

Convert Your PDF files to other formats

Freeconvert.me can convert your PDF files to these other formats:

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