RGBO to PCD Converter

Convert RGBO data to PCD format online for free

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Zero Install

Run the entire RGBO to PCD conversion in your web browser. No downloads, plugins, or system requirements beyond an internet connection.

Rapid Conversion

Processing RGBO to PCD is swift — most conversions finish in moments, so you spend less time waiting and more time working.

Works Everywhere

Desktop, tablet, or phone — the converter runs on any device with a web browser. No platform restrictions for RGBO to PCD conversion.

How to convert RGBO to PCD

1

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

2

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

3

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

About formats

RGBO is a raw pixel data format designation used by ImageMagick, the open-source image processing suite first released in 1990, representing images as a flat sequence of Red, Green, Blue, and Opacity (inverted alpha) sample values with no header, container, or compression. The RGBO channel ordering specifies that the fourth channel is opacity rather than alpha — where alpha represents transparency (0 = transparent, max = opaque), opacity represents the inverse (0 = opaque, max = transparent). This distinction matters in compositing pipelines where the mathematical convention for the fourth channel varies between systems: some compositing models work with alpha (transparency), while older conventions including portions of ImageMagick's internal processing historically used opacity. RGBO files contain raw sample data at a user-specified bit depth (8-bit, 16-bit, or floating-point per channel), with pixels stored in scanline order. Because there is no header, the image dimensions, bit depth, and endianness must be specified externally when reading the file — typically via ImageMagick command-line arguments. One advantage is direct compatibility with processing pipelines that use the opacity convention: RGBO eliminates the need for channel inversion when interfacing with systems that expect opacity rather than alpha, preventing subtle compositing errors that occur when transparency conventions are mixed. The format's raw-data nature provides another practical benefit — with no encoding overhead, RGBO data can be memory-mapped, processed with SIMD instructions, or piped between processes with minimal latency. RGBO is primarily used within ImageMagick processing chains and can be converted to any other format using ImageMagick's extensive format support.
Initial release: 1990
PCD (Photo CD) is a proprietary image format developed by Eastman Kodak in partnership with Philips, launched in 1992 as a system for transferring 35mm film photographs to compact discs for digital viewing and printing. Each PCD file stores a single photograph at five different resolutions in a hierarchical structure called an Image Pac: Base/16 (192x128), Base/4 (384x256), Base (768x512), 4Base (1536x1024), and 16Base (3072x2048), with optional 64Base (6144x4096) on Pro Photo CD discs. Images are stored in Kodak's proprietary YCC color space (a variant of CIE Lab via the Photo YCC color model), which captures a wider gamut than sRGB, at 8 bits per component in the luminance channel and subsampled chrominance. The multi-resolution pyramid is encoded using a progressive scheme: the Base image is stored directly, and each higher resolution is stored as a residual (difference) that refines the upscaled previous level, keeping the total file size manageable. One advantage is the exceptional scan quality: Photo CD scans were performed on Kodak's professional PIW (Photo Imaging Workstation) scanners by trained operators, producing consistently excellent results from 35mm negatives and slides — often better than what contemporary consumer flatbed scanners could achieve. The multi-resolution structure is another notable feature: a single PCD file serves needs from thumbnail browsing to high-resolution printing without separate file versions. PCD files can be read by Adobe Photoshop, ImageMagick, GIMP (via plugin), IrfanView, and XnView, ensuring continued access to the millions of Photo CD images created during the format's commercial peak in the 1990s.
Developer: Eastman Kodak
Initial release: 1992

Frequently Asked Questions

Why convert RGBO to PCD?

Since RGBO has no file structure, most viewers reject it. PCD conversion adds the necessary format structure for universal compatibility.

What programs open PCD files?

PCD files can be opened in IrfanView, XnView, Photoshop, and Kodak Photo CD viewers.

What makes PCD a good target format?

PCD offers multi-resolution, Kodak standard, archival quality. It gives your raw RGBO data a proper structure that any image viewer or editor can handle.

Does converting RGBO to PCD lose quality?

The conversion preserves the visual content of your RGBO data accurately. Any differences depend on PCD's format characteristics like compression type.

Is RGBO to PCD conversion free?

Standard conversions are free on Convertio. Premium plans unlock larger uploads, faster processing, and higher-volume batch conversions.