PDF to MOBI Converter

Convert PDF to MOBI online, for free.

最大文件大小 1GB. 报名了解更多

继续操作即表示您同意我们的使用条款。

高级设置（可选）

Optimize for e-book reader

Optimize output for your e-book reader

Enable Heuristic processing?

Attempt to identify and correct common styling issue (experimental)

Add margins (cm)

Add margin (0-10 cm)

Rescale all fonts (pts)

The base font size of a document is the most common font size in that document, i.e., the size of the bulk of text in that document. When you specify a Base font size, we automatically rescales all font sizes in the document proportionately, so that the most common font size becomes the specified base font size and other font sizes are rescaled appropriately.

Replace Unicode characters with ASCII?

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

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

Specify input file encoding

Helpful for eBooks without an encoding declaration or declare an erroneous one. This option will override existing encoding declarations.

Change e-book title

Enter Title, maximum 100 characters

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 delete after a few 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