WBMP to XBM Converter

WBMP to XBM conversion — modern image format in seconds

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Cloud Conversion

All WBMP to XBM processing runs on Convertio servers — your device stays fast and free while the conversion happens in the cloud.

Simple Interface

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

Privacy Protected

Your WBMP files are deleted immediately after conversion to XBM. Converted files are automatically removed from servers within 24 hours.

How to convert WBMP to XBM

1

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

2

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

3

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

About formats

WBMP (Wireless Bitmap) is a monochrome (1-bit, black and white) image format defined as part of the Wireless Application Protocol (WAP) specification, developed by the WAP Forum (later consolidated into the Open Mobile Alliance) around 1998. The format was designed for the extremely constrained mobile devices of the late 1990s and early 2000s — phones with small monochrome screens, minimal processing power, and narrow bandwidth GSM data connections. WBMP uses the simplest possible encoding: a type identifier byte (always 0 for the only defined type), width and height encoded as multi-byte integers using a variable-length scheme, and the raw pixel data where each bit represents one pixel (0 for white, 1 for black) packed eight per byte. There is no compression, no metadata, and no color — the format is purely a minimal container for delivering small monochrome graphics to WAP-era mobile browsers. One advantage was extreme efficiency on constrained devices — WBMP images could be decoded with virtually zero CPU overhead and minimal memory, critical on early mobile hardware running at single-digit megahertz clock speeds. The tiny file sizes are another strength: a typical WBMP icon occupied just a few hundred bytes, practical for transfer over 9.6 kbps GSM data channels. While the WAP ecosystem has been entirely superseded by modern mobile web browsers capable of rendering full-color JPEG, PNG, and WebP images, WBMP files remain encountered in archived mobile content from that transitional era.
Developer: WAP Forum
Initial release: 1998
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

Frequently Asked Questions

Why convert WBMP to XBM?

Few modern tools handle WBMP natively. XBM provides monochrome bitmap for X11 cursors and icons, making it widely recognized across operating systems and applications.

What programs open XBM files?

Open XBM using GIMP, ImageMagick, X11 viewers, web browsers. Cross-platform support means you can access these files on virtually any system.

Is my WBMP file safe when converting online?

Yes — Convertio deletes uploaded files right after conversion. Converted files are removed from servers within 24 hours for complete privacy.

Does converting WBMP to XBM affect quality?

The conversion preserves the visual content of your WBMP image. XBM will reproduce the same pixel data within the limits of its format capabilities.

Is WBMP to XBM conversion free?

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