XCF to SUN Converter

Transform XCF images into SUN format — free online

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Cross-Platform

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

Format Bridge

Bridge the gap between XCF and modern formats. The converter handles the technical translation so you get a clean SUN file.

Simple Workflow

Upload your XCF file, select SUN, and download the result. Three steps — no learning curve, no complicated menus to navigate.

How to convert XCF to SUN

1

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

2

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

3

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

About formats

XCF (eXperimental Computing Facility) is the native file format of GIMP (GNU Image Manipulation Program), named after the computing facility at UC Berkeley where Spencer Kimball and Peter Mattis originally developed GIMP as a student project, with the format introduced alongside GIMP 1.0 in 1998. XCF stores the complete editing state of a GIMP project: all layers with their positions, dimensions, opacity, and blending modes; layer masks; channels (including custom alpha channels); paths (vector shapes stored as Bezier curves); parasites (arbitrary named data attached to the image or individual layers); and the image's color profile, resolution, guides, and grid settings. The format supports 8-bit, 16-bit, and 32-bit floating-point precision per channel in RGB, grayscale, and indexed color modes, and uses a tile-based internal structure where the image is divided into 64x64 pixel tiles that are individually RLE-compressed. Each layer in an XCF file is stored independently with its own dimensions (layers can be larger or smaller than the canvas), enabling non-destructive editing workflows where source material is preserved at full resolution. One advantage is complete state preservation: XCF files save everything needed to resume editing exactly where you left off — every layer, mask, path, and setting — making them the essential working format for any multi-session GIMP project. The format's open specification is another strength: the XCF structure is fully documented and readable by GIMP, XnView, ImageMagick, and various programming libraries, ensuring project files remain accessible without vendor lock-in.
Initial release: 1998
SUN is a raster image format associated with Sun Microsystems workstations, encompassing both the Sun Raster format (.ras) and the Sun Icon format used for window system icons and cursors on SunOS and Solaris systems. Sun Raster files, identifiable by their 0x59a66a95 magic number, store bitmap images in 1-bit monochrome, 8-bit indexed color, 24-bit BGR, or 32-bit XBGR modes, with optional run-length encoding compression and a 32-byte header. The Sun Icon subset is a simpler text-based format used for small monochrome bitmaps — window icons, cursor images, and toolbar graphics — stored as C-language data arrays that could be directly compiled into X Window and SunView applications. These icon files begin with a comment block specifying width, height, and optionally hot spot coordinates (for cursor images), followed by hexadecimal pixel values in a format readable by both the C compiler and the iconedit tool. Sun workstations running SunOS and later Solaris were foundational platforms for Unix computing, networking, and the early internet, and the SUN image formats were integral to their graphical environments. One advantage is the format's dual text/binary nature: Sun Icons are valid C source code that can be #included directly into applications, a practical approach to resource embedding that predates modern asset management systems. The Sun Raster variant's simplicity provides another strength — the 32-byte header and straightforward encoding make it one of the easiest binary image formats to parse. SUN format files are supported by ImageMagick, GIMP, XnView, and Unix image viewing tools.
Developer: Sun Microsystems
Initial release: 1982

Frequently Asked Questions

Why convert XCF to SUN?

XCF stores layers and channels that only GIMP understands. Converting to SUN flattens the project into a format any viewer can display.

Which apps support SUN format?

Sun workstation software, GIMP, IrfanView, XnView, and legacy Unix image viewing applications.

Does this work on my phone?

Yes — the Convertio converter runs in any mobile browser. Upload your XCF file, pick SUN, and download the result directly on your phone.

Does converting XCF to SUN lose quality?

The conversion preserves the quality stored in the original XCF file. No additional degradation occurs during the format change on Convertio.

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 XCF to SUN.

Is the original resolution preserved?

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