POTM to SNB Converter

Convert POTM to SNB e-books online for free

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Bambook Compatible

Produce SNB e-books from your POTM templates — formatted and structured for the Shanda Bambook reading experience.

Secure Handling

Your uploaded POTM file is deleted immediately after processing. SNB output files are purged from servers within 24 hours.

Any Upload Device

Upload your POTM from any internet-connected device — desktop, laptop, tablet, or phone. The converter is fully browser-based.

How to convert POTM 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

POTM (PowerPoint Template with Macros) is a macro-enabled template format for Microsoft PowerPoint, introduced with Office 2007 as part of the Office Open XML family. POTM combines the template functionality of POTX — providing reusable slide masters, layouts, themes, and design foundations — with the ability to embed VBA (Visual Basic for Applications) macro code that executes in presentations created from the template. The format is a ZIP archive containing the standard XML parts for slide masters, layouts, and themes, plus a vbaProject.bin stream housing the VBA project. This combination enables organizations to distribute not just visual consistency but also functional automation: every presentation created from a POTM template inherits both the design system and the programmatic capabilities built into it. Common use cases include templates that automatically populate slides with data from corporate systems, enforce content approval workflows, insert standardized disclaimer slides, or provide custom ribbon tabs with organization-specific tools. One advantage is embedded workflow automation — a POTM template can include initialization macros that configure the presentation environment, add custom menu options, and connect to external data sources the moment a new presentation is created from it. The distinct .potm extension serves a security purpose as well, enabling administrators to apply differentiated trust policies for macro-containing templates versus standard POTX files. POTM is supported exclusively in Microsoft PowerPoint desktop editions where VBA execution is available.
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 POTM to SNB?

SNB is designed for Shanda Bambook e-readers — converting lets you bring presentation content to this device ecosystem, particularly popular in China.

What reads SNB files?

Shanda Bambook devices support SNB natively. Calibre and certain third-party e-reader applications can also handle SNB files.

Is SNB widely supported?

SNB is a niche format primarily tied to Bambook devices. For broader compatibility, consider converting to EPUB or MOBI instead.

Does the conversion preserve slide content?

Text and basic images from your POTM slides are extracted and organized into the SNB e-book structure for readable output.

Is this conversion free?

Convertio converts POTM to SNB at no charge. Paid tiers offer enhanced upload sizes and faster processing queues.

Can I convert SNB to other formats?

Yes — Convertio can convert SNB files to EPUB, MOBI, PDF, and more, so you can easily migrate to other reading platforms.