Convert PNG to BMP
Free online converter for PNG files. Uncompressed Windows bitmap. Nothing to install, no watermark, and every file is deleted automatically.
Drag and drop your files
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Upload a PNG file to convert it to BMP. Up to 3 files at once, 100 MB each.
Free · up to 3 files · 100 MB each · files deleted automatically after 1 hour.
About PNG and BMP
PNG .png
A lossless image format built for graphics rather than photographs. Every pixel it stores comes back exactly as it went in, and it carries a full alpha channel for transparency.
Good for
- Lossless — no generation loss no matter how often you re-save
- Full 8-bit alpha, so edges blend cleanly over any background
- Sharp on text, screenshots, logos and line art
Trade-offs
- Much larger than JPEG for photographs
- No animation in the baseline format
- Large photographic PNGs are slow to transfer
image/png
BMP .bmp
Microsoft's plain bitmap. It generally stores pixels with no compression at all, which makes it simple to read and very large on disk.
Good for
- Dead simple — every pixel stored literally
- No compression artefacts of any kind
- Reliably readable by old Windows software
Trade-offs
- Enormous files, often ten times a PNG of the same image
- Effectively unusable on the web
- Transparency support is inconsistent between readers
image/bmp
PNG and BMP side by side
| PNG | BMP | |
|---|---|---|
| Compression | Lossless | Uncompressed |
| Transparency | Yes — 8-bit alpha | Limited — 32-bit variants only |
| Animation | No | No |
| Typically used for | Screenshots, logos, UI assets, anything with transparency | Legacy Windows software, intermediate working files |
What changes when you convert PNG to BMP
Expect a very large file
BMP generally stores every pixel with no compression at all, so the result is often several times the size of the PNG it came from while looking exactly the same. It is worth choosing only for old Windows software that will not read anything else.
Camera data is removed by default
A PNG straight from a phone or camera carries EXIF metadata — model, settings, timestamp and, quite often, the GPS coordinates of where the photo was taken. The converted BMP is written without it, so a file you are about to share does not quietly carry your location. The orientation flag is read and applied to the pixels first, so the image will not come out sideways once the tag holding it is gone. If you need the metadata kept, there is a setting for it.
How the BMP is written
Our default is stored as plain uncompressed pixels, since that is essentially all BMP offers. The quality control on the converter moves this if you need to — the default aims to be indistinguishable from the source at a sensible file size, rather than to win a compression benchmark.
Nothing is lost in this step
Both PNG and BMP store every pixel exactly, so this conversion changes the container rather than the content. What changes is file size and what will open it — convert freely, and as often as you like, without degrading anything.
Other PNG conversions
Other ways to get BMP
Worth reading next
Why your PNG is so much bigger than your JPEG
The same photograph can be 300 KB as a JPEG and 4 MB as a PNG. Here is what each format is actually doing, and how to tell which one your file wants to be.
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Where your transparent background went
Transparency is the property most often lost silently in a conversion — the file looks perfect until it lands on a coloured background and grows a white rectangle.
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