XBM to SUN Converter

Seamless XBM to SUN image conversion, done in the cloud

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Simple Interface

Three steps to convert: upload your XBM, select SUN, and download. The clean interface makes the process intuitive even for first-time users.

Reliable Conversion

Convertio handles the XBM to SUN transformation accurately, preserving your image content while delivering a widely compatible output.

Any Device Works

Convert XBM to SUN from Windows, macOS, Linux, or mobile — the browser-based tool adapts to any screen size and operating system.

How to convert XBM 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

XBM (X BitMap) is a monochrome (1-bit) image format defined as part of the X Window System, originating at MIT around 1987. XBM files are unique among image formats in being valid C source code: each file defines the image as a static array of unsigned char values containing the packed pixel data, preceded by #define statements specifying the image width, height, and optional hot-spot coordinates (for cursor images). The pixel data is stored in hexadecimal byte values within curly braces, with each bit representing one pixel (1 = foreground, 0 = background) and bits ordered LSB-first within each byte. This design was intentional — XBM images could be #included directly into X Window application source code and compiled into the binary, eliminating the need for external file loading and runtime format parsing. The format was used throughout the X11 ecosystem for cursor shapes, window icons, toolbar buttons, and other small UI elements. One advantage is the source-code nature of the format: XBM files can be edited with a text editor, diff'd and merged in version control, generated by shell scripts, and compiled directly into C programs without any image loading library — a level of toolchain integration that no binary image format can match. The format's role as part of the X Window standard ensures it is understood by every X11-aware toolkit and application. While limited to monochrome and no compression, XBM's simplicity makes it an excellent teaching format for understanding bitmap representations. XBM files are supported by all X11 applications, ImageMagick, GIMP, web browsers (as a legacy web format), and programming environments.
Developer: MIT X Consortium
Initial release: 1987
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 XBM to SUN?

XBM is tied to X11/Unix. Switching to SUN gives you raster format from Sun Microsystems workstations and broad support across platforms, browsers, and devices.

How do I open a SUN file?

Software that handles SUN includes ImageMagick, GIMP, XnView, IrfanView — giving you options on every major operating system.

Can I convert multiple XBM files to SUN at once?

Absolutely. Batch upload your XBM images and convert them all to SUN in a single pass — no need to repeat the process for each file.

Is XBM to SUN conversion free?

Standard conversions are available for free on Convertio. Larger volumes or higher usage may benefit from a premium plan for additional capacity.

Does converting XBM to SUN affect quality?

Quality is maintained to the extent SUN supports. Since XBM is a monochrome bitmap from the X Window System, the visual data transfers cleanly to SUN.

How long does XBM to SUN conversion take?

Usually just seconds. XBM files are typically small, so the upload, conversion, and download process finishes very quickly on Convertio.