WMF to MOBI Converter

WMF to MOBI — Mobipocket e-book, free online

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E-Reader Compatible

Convert WMF to MOBI for reading on Kindle devices and a wide range of Mobipocket-compatible e-book apps.

Secure Conversion

WMF uploads are deleted after processing. MOBI output is automatically removed within 24 hours.

Read Everywhere

MOBI files work on Kindle, phones, tablets, and desktops — far more accessible than legacy WMF.

How to convert WMF to MOBI

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose mobi or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your mobi file right afterwards

About formats

WMF (Windows Metafile) is a vector graphics format created by Microsoft, introduced with Windows 3.0 in May 1990 as the platform's native format for recording and replaying graphical operations. A WMF file captures a sequence of GDI (Graphics Device Interface) drawing commands — lines, rectangles, ellipses, polygons, text, and bitmap blits — in the order they were issued, serializing screen or printer output into a replayable file. The format uses a 16-bit coordinate space and organizes records as a linear stream of function calls with their parameters, preceded by a header specifying the bounding rectangle and resolution. WMF became deeply integrated into the Windows ecosystem as the default format for clip art collections, Office document graphics, and clipboard vector interchange during the 1990s — Microsoft Office shipped with thousands of WMF clip art images that defined a visual era of desktop publishing. One advantage is pervasive compatibility: virtually every Windows application from the past three decades can render WMF content, making it one of the most widely supported vector formats in existence. The lightweight recording model is another strength — WMF files are compact and render quickly because they replay native system drawing calls rather than interpreting a complex graphics language. While 16-bit limitations and lack of transparency and Bezier curves led Microsoft to develop EMF as a 32-bit replacement, WMF files remain ubiquitous in legacy documents and across current Windows software.
Developer: Microsoft
Initial release: May 22, 1990
MOBI is an ebook format originally developed by Mobipocket SA, a French company founded in 2000 that was later acquired by Amazon in 2005. The format builds on the PalmDOC/PDB container structure, adding support for HTML-based content markup, embedded images, a DRM layer, and a JavaScript subset for limited interactivity. MOBI files use a record-based database architecture inherited from Palm OS, with a header structure containing metadata like title, author, publisher, and language followed by compressed HTML content records. The format became the foundation of Amazon's early Kindle ecosystem — the original AZW format used on first-generation Kindles was essentially MOBI with Amazon's own DRM wrapper. MOBI supports reflowable text with basic formatting including bold, italic, headings, lists, and tables, as well as internal hyperlinks and a built-in table of contents. One advantage is broad device compatibility: MOBI files are recognized by Kindle devices and apps spanning over a decade of hardware, as well as numerous third-party readers on desktop and mobile platforms. The format's lightweight structure is another strength — even long novels produce compact files that load quickly on modest hardware. While Amazon has since moved to the more capable AZW3/KF8 format for new publishing, MOBI remains widely circulated in existing ebook libraries and continues to be produced by conversion tools like Calibre for maximum Kindle compatibility.
Developer: Mobipocket SA
Initial release: 2000

Frequently Asked Questions

Why convert WMF to MOBI?

MOBI (Mobipocket) is a widely compatible e-book format. Converting WMF to MOBI creates content readable on Kindle and many third-party e-readers.

What opens MOBI files?

Amazon Kindle devices, Kindle apps, Calibre, FBReader, and most multi-format e-book readers support MOBI.

Is MOBI compatible with Kindle?

Yes — MOBI is one of the core formats supported by Amazon Kindle devices and applications.

Is this conversion free?

Free for standard use. Premium subscriptions offer extended limits and faster speeds.

How fast is WMF to MOBI?

A few seconds. Cloud processing packages the e-book quickly.

Can I convert from any device?

Yes — Convertio is browser-based and works on desktops, laptops, tablets, and phones.