BMP to PNG
BMP stores pixel data with little to no compression, so files are often 5–10× larger than an equivalent PNG for the exact same image with no visible quality difference.
BMP files are most often produced by older Windows tools like Paint or screen-capture utilities, and converting to PNG is usually just about shrinking the file down before emailing or uploading it somewhere.
As a rule of thumb: stick with BMP when you need it for legacy windows tools only, and convert to PNG when screenshots, logos, graphics with text is what you actually need instead. Converting also gains you transparency support, which BMP doesn't have.
BMP vs PNG
| BMP | PNG | |
|---|---|---|
| Compression | None or minimal | Lossless |
| Transparency | No | Yes |
| Best for | Legacy Windows tools only | Screenshots, logos, graphics with text |
Frequently asked
- Is my BMP file uploaded to a server?
- No — the conversion runs entirely in your browser using the Canvas API. Your image never leaves your device.
- What's the maximum file size?
- There's no hard limit, but very large images (over ~50 megapixels) may be slow to process since everything runs on your device rather than a server.
- Can I convert multiple files at once?
- Yes, the converter above accepts multiple files and lets you download them all at once as a zip.