BMP to PNG Converter
Convert BMP to PNG free — no upload, no signup
To convert BMP to PNG, drop your BMP images into the box below, click Convert, then Download. Fylo does the work inside your browser, so nothing is uploaded and there's no signup or watermark. Lossless and much smaller — the ideal way to modernise BMP files.
Drop images here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
No settings needed — PNG output keeps every pixel. Options are under Advanced.
Advanced
Leave empty to keep the original size.
How to convert BMP to PNG
Add your BMP files
Drag and drop BMP files into the box, tap to choose them, or paste with Ctrl+V. You can add many at once.
No settings needed
PNG is lossless, so Fylo keeps every pixel. Advanced options let you limit the maximum width.
Convert and download
Click Convert, then download each PNG or get them all in one ZIP.
Why convert BMP to PNG?
PNG is the natural upgrade for BMP: both are lossless, but PNG compresses, supports transparency and works in every browser and web form. It's the right choice for archiving screenshots, diagrams and scanned line art.
Does converting BMP to PNG affect quality or size?
Every pixel is preserved exactly. Typical BMP screenshots shrink by 80–95% as PNG because flat areas compress extremely well; noisy photos shrink less, often to around half.
What's the difference between BMP and PNG?
BMP is Microsoft's uncompressed bitmap format. It's simple and lossless but huge: every pixel is stored raw, so a 12-megapixel photo takes about 36 MB.
PNG is a lossless format with full transparency. It keeps every pixel exact, which makes it ideal for screenshots, logos and graphics — but photos saved as PNG are large.
Learn more: BMP format guide · PNG format guide
| Property | BMP | PNG |
|---|---|---|
| Compression | Usually none (optional RLE) | Lossless (DEFLATE) |
| Transparency | Rarely (32-bit only) | Yes — full 8-bit alpha |
| Animation | No | APNG only (rarely used) |
| Colour depth | 1 to 32-bit | Up to 48-bit + alpha |
| Typical size, 12 MP photo | ≈ 36 MB | ≈ 15–25 MB |
| Support | Windows, most editors, all major browsers | Universal — every browser and editor |
| Best for | Legacy Windows software, embedded displays | Screenshots, logos, graphics with text, editing |
| Introduced | 1985 | 1996 |
Frequently asked questions
Is BMP to PNG lossless?
Yes. Both formats are lossless, so the image is identical — only the file size changes.
Which BMP types can Fylo read?
The common 1, 4, 8, 24 and 32-bit Windows bitmaps. If a 32-bit BMP stores real alpha values, the PNG keeps them.
Are my BMP files uploaded to a server?
No. Fylo converts BMP to PNG entirely inside your browser using a background Web Worker, so your files never leave your device. That's also why it's fast — there's no upload or download wait.
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