PCT to SNB Converter

Online PCT to SNB converter — create e-books free

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Cross-Platform

Works on Windows, macOS, Linux, iOS, and Android. Convert PCT to SNB from whichever device you have at hand — no restrictions.

Quality Preserved

The conversion transfers all pixel data from PCT to SNB faithfully. No detail is lost during the format change.

Files Stay Safe

Uploaded PCT images are wiped after conversion, and SNB downloads are cleaned from servers within 24 hours — security is built in.

How to convert PCT 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

PCT (also known as PICT) is a metafile graphics format originally developed by Apple Computer and introduced alongside the original Macintosh in January 1984. PCT files can contain both vector drawing commands and raster bitmap data, encoded as a sequence of QuickDraw drawing operations — the same graphics primitives used by the Macintosh operating system for all on-screen rendering. The format evolved through two major versions: PICT 1, which recorded basic QuickDraw operations (lines, rectangles, ovals, text, 1-bit bitmaps) in a compact format suitable for the original Macintosh's limited memory, and PICT 2, introduced with Color QuickDraw in 1987, which extended the format to support 24-bit color, multiple color spaces, and embedded JPEG-compressed data. PCT files begin with a 512-byte header (originally used for resource fork information), followed by the picture size, bounding rectangle, and a sequence of opcodes that define the drawing operations. During the Macintosh's commercial ascendancy, PICT was the universal graphics interchange format on Mac OS — the system clipboard used PICT for all graphical copy/paste operations, and most Mac applications could import and export the format. One advantage is the hybrid vector/raster nature: PCT files from the QuickDraw era preserve both scalable drawing commands and pixel data in a single format, enabling resolution-independent output for the vector portions. PICT's historical significance as the native Mac graphics format throughout the classic Mac OS era (1984-2001) provides another dimension. PCT files remain readable by Preview on macOS, ImageMagick, XnView, LibreOffice, and GIMP.
Developer: Apple Computer
Initial release: 1984
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 PCT to SNB?

PCT was standard on classic Mac OS but is now obsolete. Converting to SNB brings those images into a format modern editors handle natively.

What can I use to view SNB files?

Samsung devices (S Note app), and Calibre e-book manager for conversion purposes.

Do I need to install anything?

No — the entire conversion runs in your web browser. There is nothing to download or install on your computer or phone to convert PCT to SNB.

Is it safe to upload PCT files?

Convertio deletes uploaded files immediately after conversion. Converted output is removed from servers within 24 hours for your privacy.

Can I convert multiple PCT files at once?

Yes — Convertio supports batch uploads. Queue several PCT files and convert them all to SNB in one session, saving time on repetitive tasks.

Is the original resolution preserved?

Yes — the pixel dimensions of your PCT image are maintained in the SNB output. No downscaling or cropping happens during conversion.