XPM to WBMP Converter

Turn your XPM bitmaps into WBMP format — fast and online

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Modern Format Output

WBMP provides 1-bit monochrome for mobile devices — a significant upgrade over the legacy XPM format for everyday image use and sharing.

Any Device Works

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

Reliable Conversion

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

How to convert XPM to WBMP

1

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

2

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

3

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

About formats

XPM (X PixMap) is a color image format for the X Window System, developed by Arnaud Le Hors at GROUPE BULL beginning in 1989 as the color successor to the monochrome XBM format. Like XBM, XPM files are valid C source code — each file defines the image as a static array of character strings, where the header strings specify width, height, number of colors, and characters per pixel, the color definition strings map character codes to color values (supporting X11 color names, hexadecimal RGB, and symbolic color types like 'background' and 'foreground'), and the pixel strings encode each row as a sequence of character codes that index the color palette. This ASCII art representation makes XPM images human-readable: one can often see the image content directly in the text of the source file. The format went through three revisions: XPM1 (1989, compatible with X10), XPM2 (simplified syntax), and XPM3 (1991, the current version with the static char* syntax and extended color specification). XPM was the standard format for X Window application icons, splash screens, pixmap buttons, and themed UI elements throughout the 1990s and 2000s. One advantage is the combined benefits of being a valid C source file and a color image: XPM files can be compiled into applications, edited in any text editor, processed by text tools, and version-controlled, while supporting up to 256 colors with transparency (using the 'None' color keyword). The X11 ecosystem's reliance on XPM ensures broad tool support. XPM files are handled by all X11 toolkits, ImageMagick, GIMP, and web browsers (legacy support).
Initial release: 1989
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

Frequently Asked Questions

Why would I convert XPM to WBMP?

XPM is tied to X11/Linux desktops. Switching to WBMP gives you 1-bit monochrome for mobile devices and broad support across platforms, browsers, and devices.

How do I open a WBMP file?

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

How long does XPM to WBMP conversion take?

Most XPM to WBMP conversions complete within a few seconds. The lightweight nature of XPM images means fast processing times.

Are my uploaded files kept private?

Yes — your XPM files are deleted immediately after processing. The resulting WBMP files are also removed from servers within 24 hours.

Does this converter work on mobile devices?

It works on any device with a web browser. Whether you are on Android, iOS, Windows, or macOS — XPM to WBMP conversion is fully supported.

Does converting XPM to WBMP affect quality?

Your image content stays intact during conversion. Any differences depend on WBMP characteristics — such as color depth or compression method.