PCT to WBMP Converter

Free PCT to WBMP conversion — online image tool

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Wide Compatibility

Convert PCT to WBMP and dozens of other formats. Convertio supports hundreds of conversion directions for maximum flexibility.

No Installation

Everything happens in the browser. Open Convertio, upload your PCT file, and download the WBMP result — zero setup required.

Quick Turnaround

Upload and convert PCT to WBMP in moments. Server-side processing keeps the workflow fast regardless of your device's capabilities.

How to convert PCT 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

PCT (also known as PICT) is a metafile graphics format originally developed by Apple Computer and introduced alongside the original Macintosh in January 1984. PCT files can contain both vector drawing commands and raster bitmap data, encoded as a sequence of QuickDraw drawing operations — the same graphics primitives used by the Macintosh operating system for all on-screen rendering. The format evolved through two major versions: PICT 1, which recorded basic QuickDraw operations (lines, rectangles, ovals, text, 1-bit bitmaps) in a compact format suitable for the original Macintosh's limited memory, and PICT 2, introduced with Color QuickDraw in 1987, which extended the format to support 24-bit color, multiple color spaces, and embedded JPEG-compressed data. PCT files begin with a 512-byte header (originally used for resource fork information), followed by the picture size, bounding rectangle, and a sequence of opcodes that define the drawing operations. During the Macintosh's commercial ascendancy, PICT was the universal graphics interchange format on Mac OS — the system clipboard used PICT for all graphical copy/paste operations, and most Mac applications could import and export the format. One advantage is the hybrid vector/raster nature: PCT files from the QuickDraw era preserve both scalable drawing commands and pixel data in a single format, enabling resolution-independent output for the vector portions. PICT's historical significance as the native Mac graphics format throughout the classic Mac OS era (1984-2001) provides another dimension. PCT files remain readable by Preview) on macOS, ImageMagick, XnView, LibreOffice, and GIMP.
Developer: Apple Computer
Initial release: 1984
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 convert PCT to WBMP?

PCT files from old Mac systems are unreadable by most modern software. Converting to WBMP makes the image data accessible on any platform.

What programs open WBMP files?

Legacy mobile browsers, GIMP, IrfanView, XnView, and some mobile development tools for testing WAP-era content.

Is the original resolution preserved?

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

Do I need to pay for this converter?

Basic PCT to WBMP conversions are free. Convertio offers premium tiers for heavier workloads with faster processing and priority support.

Where can I upload PCT files from?

You can upload from your local device, Google Drive, Dropbox, or paste a direct URL. Convertio pulls the PCT file from any of these sources.

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 PCT to WBMP.