WBMP to PNG Converter
Convert a legacy WAP Wireless Bitmap (.wbmp) file into a standard PNG image. Runs entirely in your browser — no upload.
Input
Pick a .wbmp file. It's decoded locally — never uploaded.
Output
Upload a .wbmp file to see the converted PNG here.
More ways to use this tool
REST API
curl -X POST https://api.iotools.cloud/v1/tool/wbmp-to-png \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"file": "data:application/octet-stream;base64,AAAEBKBQoFA…"
}'Swap in your own key from your account. The tool's fields are the body — no wrapper.
Ask an AI agent
Use the IOTools `wbmp-to-png` tool (WBMP to PNG Converter) on this input:
YOUR_INPUT_HEREPaste this at any agent connected to the IOTools MCP server, then add your input.
Embed widget
<iframe
src="https://iotools.cloud/embed/wbmp-to-png/"
width="100%" height="520" frameborder="0" scrolling="no" loading="lazy"
title="WBMP to PNG Converter — iotools.cloud"
sandbox="allow-scripts allow-forms allow-same-origin allow-downloads allow-popups allow-popups-to-escape-sandbox"
allow="clipboard-write"
style="width:100%;border:1px solid #e5e7eb;border-radius:12px;overflow:hidden"></iframe>
<script src="https://iotools.cloud/embed.js" async></script>Drop this into your own page — free, no key required, just a link back.
| Cost per API/MCP call | From 5 credits |
|---|
Also available with
Guides
.wbmp (Wireless Bitmap) is a tiny, 1-bit-per-pixel monochrome image format from the WAP/early-mobile era — every pixel is either black or white, with no grayscale or color. Modern browsers and image viewers can't open it directly, but it still turns up occasionally from legacy embedded devices, thermal/label printers, and old WAP-era assets. This converter turns a .wbmp file into a standard PNG you can open anywhere.
How to use it
Upload your .wbmp file — it's decoded entirely in your browser and never leaves it. The converted PNG appears instantly; download it or drag it out of the preview.
What it supports
- Type 0 WBMP — the standard, uncompressed black-and-white variant, which is the only WBMP type ever actually defined and used in practice.
- Any image size the file declares, up to 4096×4096 pixels — far larger than any real WBMP (a legacy mobile-screen or printer format), and a sanity limit against a corrupted or adversarial file claiming an impossibly large canvas.
Privacy
Everything happens client-side — reading the .wbmp bytes and assembling the PNG both run in your browser. Nothing is uploaded to a server.
Why is my converted PNG black and white with no gray?
That's a property of the source format, not something lost in conversion. .wbmp only ever stores 1 bit per pixel — on or off — so there was never any grayscale or color information to preserve. If you need to add color or shading, open the PNG in an image editor afterward.
I uploaded a file but nothing happened
The converter only reads the standard, uncompressed "type 0" WBMP variant — every real-world .wbmp file is type 0, so this almost always means the file isn't actually a .wbmp (a different format renamed with a .wbmp extension) or is truncated/corrupted. Double-check the file with a hex viewer or re-export it from its original source.
For other legacy or specialized image formats, see the ICO to PNG Converter.