Browser edition: files stay on your device. Up to 100 MB total and 10 minutes. First use downloads a 32 MB engine. Some formats depend on codec support. Public-link downloading is not ready on this free deployment.
Convert BMP to PNG
Convert BMP to PNG online for free — right in your browser, without uploading. Real conversion, batch support, no sign-up.
How to convert BMP to PNG
- Add your fileDrop it on the page, choose it from your device, or paste it with Ctrl+V.
- ConvertAdjust settings if you like, then press the button. You'll see live progress.
- Browser processing uses original files on your device. Public-link downloading is unavailable.
What happens to your file
BMP files are common for legacy Windows software, embedded displays, but not every app or device opens them. PNG works best for logos, screenshots, graphics with transparency. Spool converts BMP to PNG with FFmpeg and libheif/Pillow — real decoding and encoding, not a renamed file extension.
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
BMP vs PNG
| BMP | PNG | |
|---|---|---|
| Full name | Bitmap Image File | Portable Network Graphics |
| Created by | Microsoft, 1990 | W3C, 1996 |
| Type | Image | Image |
| Typical contents | uncompressed raster | lossless DEFLATE compression with alpha channel |
| Best for | legacy Windows software, embedded displays | logos, screenshots, graphics with transparency |
| Strength | Simple and lossless | Lossless quality |
| Weakness | Enormous file sizes | Large files for photographs |
About BMP
- Type
- Bitmap Image File
- Contains
- uncompressed raster
- Use
- legacy Windows software, embedded displays
About PNG
- Type
- Portable Network Graphics
- Contains
- lossless DEFLATE compression with alpha channel
- Use
- logos, screenshots, graphics with transparency
FAQ
Are my photos uploaded?
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
Can I convert several BMP files at once?
Yes. Drop up to 10 files at a time — each one is converted in parallel and you can download them individually or all at once.
Is there a file size limit?
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
Is this BMP to PNG converter free and safe?
Yes. There are no pop-ups, redirects or fake download buttons, and no software to install. Files are transferred over HTTPS, processed in isolated job folders and deleted automatically.