SNB to XPM Converter

Convert SNB ebooks to XPM pixmap images free

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Any Platform Works

Access the converter from Windows, Mac, Linux, or mobile — any modern web browser is all you need.

SNB to XPM in Seconds

Upload a Bambook SNB ebook and receive XPM pixmap images ready for use in X11 applications and Linux workflows.

Secure File Handling

Uploaded SNB files are deleted immediately after processing. Converted XPM downloads are purged within 24 hours.

How to convert SNB to XPM

1

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

2

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

3

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

About formats

SNB is a proprietary ebook format developed by Shanghai Nutshell Electronics, a subsidiary of Shanda Interactive Entertainment, for the Bambook e-reader launched in August 2010. The format is structurally based on EPUB principles, packaging HTML content, CSS styling, images, and metadata within a compressed archive, but uses a proprietary container that restricts native playback to Bambook devices and associated software. Shanda designed the Bambook and its SNB ecosystem as an integrated reading platform tied to the Cloudary literature portal (later rebranded as China Literature), one of China's largest online publishing networks hosting millions of web novels and serialized fiction. The format supported reflowable text, chapter navigation, bookmarks, and basic typographic controls suited to Chinese-language content display. One advantage was tight integration with Shanda's massive content catalog, providing readers instant access to an enormous library of Chinese-language literature directly through the device. The Bambook was initially offered at a heavily subsidized price point, using the content ecosystem to drive revenue — a model that preceded similar strategies by other e-reader manufacturers. While the Bambook hardware line was eventually discontinued as the Chinese market shifted toward tablet-based reading apps, SNB files from that era can be converted to standard formats using tools like Calibre with appropriate plugins. The format represents an interesting case study in platform-specific ebook ecosystems within the Chinese digital publishing landscape.
Initial release: August 2010
XPM (X PixMap) is a color image format for the X Window System, developed by Arnaud Le Hors at GROUPE BULL beginning in 1989 as the color successor to the monochrome XBM format. Like XBM, XPM files are valid C source code — each file defines the image as a static array of character strings, where the header strings specify width, height, number of colors, and characters per pixel, the color definition strings map character codes to color values (supporting X11 color names, hexadecimal RGB, and symbolic color types like 'background' and 'foreground'), and the pixel strings encode each row as a sequence of character codes that index the color palette. This ASCII art representation makes XPM images human-readable: one can often see the image content directly in the text of the source file. The format went through three revisions: XPM1 (1989, compatible with X10), XPM2 (simplified syntax), and XPM3 (1991, the current version with the static char* syntax and extended color specification). XPM was the standard format for X Window application icons, splash screens, pixmap buttons, and themed UI elements throughout the 1990s and 2000s. One advantage is the combined benefits of being a valid C source file and a color image: XPM files can be compiled into applications, edited in any text editor, processed by text tools, and version-controlled, while supporting up to 256 colors with transparency (using the 'None' color keyword). The X11 ecosystem's reliance on XPM ensures broad tool support. XPM files are handled by all X11 toolkits, ImageMagick, GIMP, and web browsers (legacy support).
Initial release: 1989

Frequently Asked Questions

Why convert SNB to XPM?

The Bambook SNB format is only readable on Shanda devices. XPM produces color pixmap images that integrate with X11 toolkits and Linux apps.

How do I open XPM files?

GIMP, XnView, ImageMagick, and native X Window System tools all support XPM. Many Linux desktop environments display them directly.

What quality can I expect?

XPM captures page content as a color-mapped image. Text remains readable and layout is preserved as a visual snapshot.

Can I convert multiple pages?

Yes, multi-page SNB ebooks produce individual XPM files for each page, giving you separate images of every page.

Is the service really free?

Convertio provides free online conversion from SNB to XPM with no software to install and no account needed to start.