Convert PNG to BMP
To convert PNG to BMP, add your .png file below and press the button: it's processed on your own device and you download the result, with nothing uploaded. It's free, needs no account, and works with files up to 500MB.
Tip: add several files at once to convert them in one go and download them as a ZIP.
About converting PNG to BMP
PNG (.png) files can be converted to BMP entirely in your browser — no software to install, no file upload, and no account required. The conversion runs on the browser's own Canvas API directly on your device.
Technical comparison
| PNG | BMP | |
|---|---|---|
| Category | image | image |
| Compression type | Lossless (DEFLATE) | Uncompressed (occasionally simple RLE) |
| Typical file size | Moderate — larger than JPEG for photos, smaller for flat-color graphics | Very large — essentially uncompressed pixel data |
| Transparency support | Yes (full 8-bit alpha channel) | Rare (v4/v5 support alpha, but rarely used in practice) |
How to convert PNG to BMP privately
Every step below runs on the browser's own Canvas API inside this browser tab. Your .png file is never uploaded to a server — there's no network request carrying it anywhere.
Add your PNG file
Drag and drop, or click to select, a file (.png). It's read straight from disk into browser memory — no upload step exists.
Convert locally
FreePrivateConvert converts it to BMP using the browser's own Canvas API, entirely within this browser tab.
Download the result
Save your converted .bmp file. It only ever existed in this tab's memory — closing the tab without downloading discards it completely.
Convert PNG to BMP with ffmpeg (command line)
Prefer the terminal? This page uses your browser's built-in image engine; the equivalent ffmpeg command is:
ffmpeg -i input.png output.bmp- -i input.png
- Your PNG file.
- output.bmp
- The BMP file to create. ffmpeg picks the container from this extension.
Don't have ffmpeg installed? You don't need it: use the converter at the top of this page. It runs this conversion on your own device, and your file is never uploaded.
FAQ
- Is my file uploaded anywhere?
- No. Your file is read and processed inside this browser tab and never leaves your device. You can confirm it in your browser's developer tools: the Network tab shows no upload.
- Does converting PNG to BMP reduce quality?
- No. BMP is uncompressed, so nothing is lost in the conversion, but the file is much larger than the PNG.
- Is there a file size limit?
- Yes: 500MB per file. There's no account and no limit on how many files you convert.
- What's the difference between PNG and BMP?
- PNG (Portable Network Graphics) and BMP (Bitmap) store data differently. PNG: lossless (DEFLATE). BMP: uncompressed (occasionally simple RLE). BMP is a simple, largely uncompressed raster image format dating back to early Windows — straightforward but very large files.
- Why convert PNG to BMP?
- Common uses for BMP: Legacy Windows applications and embedded systems; Simple screenshots from older software; Situations requiring zero decode overhead. Trivial to parse and generate — a flat grid of pixel values with almost no decoding logic, unlike compressed formats.
- What MIME type does a .bmp file use?
- image/bmp, the standard type for Bitmap.
- What is the ffmpeg command to convert PNG to BMP?
- Run: ffmpeg -i input.png output.bmp. This page does the same conversion with your browser's built-in image engine, so you don't need to install ffmpeg.
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