Convert PNG to BMP — free, private, in your browser
Decoded with OxiPNG, encoded with ImageMagick WASM — entirely on your device. No upload, no queue, no watermark.
Why convert PNG to BMP?
Convert PNG (lossless with full transparency. the standard for screenshots, logos and ui graphics) to BMP — the conversion can preserve every pixel. Drop files below: decoding and encoding run entirely in your browser via WebAssembly, so images are never uploaded to a server.
How to convert PNG to BMP
- 1Drop your PNG files onto the tool above (or click to browse, or paste from the clipboard). Batches are fine.
- 2BMP is pre-selected as the output. BMP is lossless, so there is no quality to lose. Optionally cap the maximum dimension to also downscale.
- 3Each file converts in your browser and shows its new size. Download files individually or grab everything as a ZIP.
PNG vs BMP
| PNG | BMP | |
|---|---|---|
| Introduced | 1996 (PNG Development Group (W3C)) | 1990 (Microsoft) |
| Compression | Lossless | Lossless |
| Transparency | Yes | No |
| Animation | No | No |
| HDR / wide gamut | No | No |
| Browser display | All browsers | All browsers |
| Typical use | Screenshots | Legacy Windows applications |
About PNG full guide →
Lossless with full transparency. The standard for screenshots, logos and UI graphics.
About BMP full guide →
Uncompressed Windows bitmaps. Huge files — almost always worth converting.
Frequently asked questions
Is it safe to convert PNG to BMP online?+
With EditItAll, your files are never uploaded: decoding and encoding run inside your browser using WebAssembly (Squoosh-grade codecs (MozJPEG, libwebp, libavif, libjxl, OxiPNG) to decode, ImageMagick compiled to WebAssembly to encode). The images stay on your device from start to finish, and the whole thing works offline once the page has loaded.
Will converting PNG to BMP lose quality?+
No. BMP is lossless: every pixel of the decoded PNG is preserved exactly.
What happens to transparency when converting to BMP?+
BMP has no alpha channel, so transparent areas are flattened onto a background color (white by default — you can pick another in the options).
Is there a file size or count limit?+
No hard limits and no accounts — processing uses your own device's memory and CPU, so very large images are only constrained by your browser (multi-hundred-megapixel images may fail on low-memory devices). Batch as many files as you like; they are processed in sequence.
Can I convert BMP back to PNG?+
Yes — use the BMP to PNG converter, or just change the output format dropdown after dropping files.