WBMP to PNG Converter

Turn your WBMP bitmaps into PNG format — fast and online

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Effortless Process

Converting WBMP to PNG takes just a few clicks — no technical knowledge required. Upload, choose your format, and download the result.

Modern Format Output

PNG provides lossless compression with transparency support — a significant upgrade over the legacy WBMP format for everyday image use and sharing.

Batch Processing

Upload multiple WBMP files at once and convert them all to PNG in a single session — ideal when you have many legacy images to migrate.

How to convert WBMP to PNG

1

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

2

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

3

Let the file convert and you can download your png 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
PNG (Portable Network Graphics) is a lossless raster image format developed by the PNG Development Group and published as a W3C Recommendation on October 1, 1996, created as a patent-free replacement for GIF after the Unisys LZW patent controversy. PNG uses a two-stage compression pipeline: a prediction filter selects the optimal per-row preprocessing (none, sub, up, average, or Paeth), then DEFLATE compression encodes the filtered data. The format supports rich color modes — 1/2/4/8/16-bit grayscale, 8/16-bit per channel true color, and indexed color with palettes up to 256 entries — all with optional alpha transparency ranging from a single transparent color to a full per-pixel alpha channel with 256 or 65536 levels. PNG also stores gamma correction, ICC color profiles, text metadata, and suggested background color. One advantage is lossless compression with transparency — PNG preserves every pixel exactly while supporting smooth semi-transparent edges, making it the standard format for web graphics, UI elements, logos, screenshots, and any image where artifacts or color shifts are unacceptable. Universal support is another core strength: every web browser, operating system, image editor, and programming library handles PNG natively. The format has proven remarkably durable — after nearly three decades, PNG remains the default lossless web image format. While newer formats like WebP and AVIF offer better compression, PNG's combination of lossless quality, full transparency, and absolute ubiquity keeps it indispensable.
Initial release: October 1, 1996

Frequently Asked Questions

Why convert WBMP to PNG?

WBMP is tied to WAP mobile phones. Switching to PNG gives you lossless compression with transparency support and broad support across platforms, browsers, and devices.

How do I open a PNG file?

Software that handles PNG includes any web browser, Photoshop, GIMP, Paint, Preview — giving you options on every major operating system.

What exactly is the WBMP format?

The WBMP format is a monochrome bitmap from the WAP era for early mobile phones, rooted in WAP mobile phones. Modern software rarely supports it natively, making conversion essential.

Is WBMP to PNG conversion free?

Yes — Convertio offers free WBMP to PNG conversion. Premium options exist for users who need more capacity or faster processing speeds.

Are my uploaded files kept private?

Your privacy is protected. All uploaded files are erased after conversion and output files are purged within 24 hours — nothing is stored long-term.

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 — WBMP to PNG conversion is fully supported.

WBMP to PNG Quality Rating

4.6 (24 votes)
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