POTX to SNB Converter

Convert POTX templates to SNB Bambook format free online

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Bambook-Ready Output

Your POTX template content transforms into an SNB file optimized for reading on Shanda Bambook devices.

No Software Required

The full conversion workflow runs in your web browser. No Bambook authoring tools, no plugins — just upload and download.

Secure Processing

Your POTX file is deleted right after conversion. The SNB output is automatically purged from servers within 24 hours.

How to convert POTX to SNB

1

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

2

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

3

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

About formats

POTX (PowerPoint Template XML) is the Open XML template format for Microsoft PowerPoint, introduced with Office 2007. A POTX file is a ZIP archive containing XML parts that define slide masters, slide layouts, theme colors, theme fonts, theme effects, placeholder configurations, and default content — everything needed to establish a consistent visual foundation for new presentations. When applied, a POTX template creates a new PPTX document inheriting the template's complete design system, including multiple slide layout variants (title, content, two-column, comparison, blank, and custom layouts) each with precisely positioned placeholders. The XML-based structure brings advantages over the legacy POT format: templates can be inspected and modified using standard XML tools, design elements are cleanly separated into dedicated files (theme.xml, slideMaster.xml, slideLayout.xml), and built-in ZIP compression yields smaller file sizes. One advantage is design system management — POTX files encapsulate an entire visual identity as a distributable package, and the modular XML structure makes it straightforward to update individual elements like color schemes or font stacks without rebuilding the entire template. Broad compatibility is another strength: POTX templates work in PowerPoint on Windows and macOS, LibreOffice Impress, and online platforms. The format integrates with PowerPoint's template gallery and organizational template libraries, enabling centralized design governance across large teams.
Developer: Microsoft
Initial release: January 30, 2007
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

Frequently Asked Questions

Why convert POTX to SNB?

SNB is the native format for Shanda Bambook e-readers. Converting from POTX lets you distribute template content to users of that reading platform.

What opens SNB files?

Shanda Bambook devices read SNB natively. On desktop, Calibre can import and convert SNB files for viewing or further format changes.

Is SNB widely supported?

SNB is specific to the Bambook ecosystem and not broadly used outside it. For wider e-reader support, consider EPUB or MOBI instead.

Does SNB handle images?

SNB supports embedded images in a basic capacity. Visual elements from your POTX template that suit e-book reading are included where possible.

Is POTX to SNB conversion free?

Convertio provides POTX to SNB conversion at no charge. Premium accounts unlock additional capabilities for heavy users.

Can I convert SNB to other e-book formats?

Yes. Tools like Calibre can convert SNB to EPUB, MOBI, FB2, and other formats if you later need broader compatibility.