MOBI to MNG Converter

Convert MOBI ebook pages to MNG format — free online

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Animated Page Sequence

MOBI ebook pages become frames in an MNG animation — a visual slideshow of your book content in PNG-quality, full-color frames.

PNG-Quality Animation

Unlike GIF, MNG supports millions of colors and transparency per frame — ebook pages render with full visual fidelity in the animation.

Processed Remotely

Convertio handles the MOBI to MNG conversion on its servers — no animation tools or image editors needed on your machine.

How to convert MOBI to MNG

1

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

2

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

3

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

About formats

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
MNG (Multiple-image Network Graphics) is an animation and multiple-image format designed as the animated counterpart to PNG, with its specification reaching version 1.0 on January 31, 2001. Developed by Glenn Randers-Pehrson and members of the PNG development community, MNG extends PNG's capabilities with support for frame-based animation sequences, slide shows, complex sprite overlays, and JNG (JPEG Network Graphics) frames for lossy compression of photographic content within the same container. An MNG file consists of a series of chunks (following PNG's chunk-based architecture): MHDR and MEND chunks bookend the datastream, with embedded PNG or JNG images as individual frames and control chunks (DEFI, FRAM, LOOP, ENDL, TERM, BACK, BASI, CLON, PAST, DISC, SHOW) directing playback timing, looping behavior, layer compositing, and memory management. The format supports both full-frame replacement and delta (difference) updates for efficient encoding of animations with static backgrounds, as well as object-based animation where sprites are defined once and repositioned across frames. One advantage is technical sophistication: MNG provides a level of animation control that GIF and APNG cannot match — frame-accurate timing, nested loops, conditional branches, interframe compression, and mixed lossy/lossless content within a single animation. The PNG-based foundation ensures lossless quality with full alpha transparency for each frame. MNG is supported by ImageMagick, GIMP, and various media players, though browser support was limited, which led to APNG's emergence as a simpler alternative for web animation.
Initial release: January 31, 2001

Frequently Asked Questions

Why convert MOBI to MNG?

MNG extends PNG with animation support — converting MOBI pages to MNG can bundle them into an animated image sequence for visual presentations.

How do I open an MNG file?

IrfanView, XnView, and ImageMagick handle MNG files. Some web browsers previously supported MNG, though support is now limited.

How does MNG differ from animated GIF?

MNG supports full-color PNG-quality frames with alpha transparency, unlike GIF which is limited to 256 colors per frame.

Can MNG hold an entire ebook as an animation?

Technically yes — each page becomes a frame in the animation. It creates a slideshow effect of your MOBI ebook content.

Is MNG widely supported?

MNG has limited browser and viewer support compared to GIF or APNG. It is best for specialized use cases or workflows that require the format.