RLA to SNB Converter

Export Wavefront renders as SNB format online for free

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Private & Secure

Your RLA uploads are deleted right after conversion, and the SNB output is removed from servers within 24 hours — your data stays safe.

Multi-File Processing

Queue several RLA files at once and convert them all to SNB simultaneously. Batch mode streamlines repetitive conversion work.

Browser-Based Tool

No downloads or plugins needed — convert RLA to SNB directly in your web browser on any operating system or device.

How to convert RLA 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

RLA is a raster image format developed by Wavefront Technologies in the mid-1980s for their Advanced Visualizer 3D rendering software, which ran primarily on Silicon Graphics workstations. RLA files store rendered frames with support for multiple channels beyond standard RGB — including alpha transparency, Z-depth, surface normal vectors, object ID, material ID, and other arbitrary data channels that compositing artists use to manipulate rendered elements without re-rendering. Each scanline is independently compressed using run-length encoding, allowing efficient random access to any row without decompressing the entire image. The format supports 8-bit, 16-bit, and 32-bit floating-point per channel, making it suitable for high-dynamic-range rendering output. RLA was a staple of visual effects production throughout the 1990s, used extensively in film and broadcast VFX pipelines alongside Wavefront's Composer compositing software. The format's successor, RPF (Rich Pixel Format), extended the concept further and was adopted by Autodesk 3ds Max, but RLA remains the earlier standard. One advantage is the multi-channel rendering data: unlike simple RGB image formats, RLA files carry per-pixel depth, normal, and ID passes that enable post-render effects like depth-of-field blur, fog, re-lighting, and object-level color correction without returning to the 3D application. This pipeline efficiency made RLA essential in early visual effects production. The format is recognized by Autodesk tools, Foundry Nuke, ImageMagick, and various legacy compositing applications.
Initial release: 1986
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 RLA to SNB?

RLA was designed for 1990s VFX pipelines and lacks modern support. Exporting to SNB lets you archive and share those renders universally.

What programs can open SNB?

Samsung S Note app is the primary viewer. Calibre and some third-party note apps can open or convert SNB documents.

Will I lose image quality converting RLA to SNB?

SNB preserves image data without lossy compression, so the visual content from your RLA is retained faithfully during conversion.

Is RLA to SNB conversion fast?

Most RLA images convert to SNB within seconds. The exact time depends on the resolution and complexity of the source, but it is typically quick.

Does Convertio support batch RLA to SNB conversion?

Yes — upload multiple RLA files in one session and convert them all to SNB simultaneously. Batch processing saves time on repetitive tasks.