How to convert BMP to PNG
- Add your BMP files above — drag and drop, click to browse, or paste. Nothing is uploaded.
- Each file is decoded and re-encoded to PNG on your device, right in the browser.
- Download each PNG individually, or grab the whole batch as a ZIP.
Why convert BMP to PNG?
An uncompressed Windows image format that produces very large files. A lossless format with transparency support that opens in every browser and editor.
- Lossless quality
- Transparency support
- Universal compatibility
File sizes depend on the image and your chosen settings.
About the formats
Bitmap (.bmp)
An uncompressed Windows image format that produces very large files. It’s commonly used for Legacy Windows images.
Portable Network Graphics (.png)
A lossless format with transparency support that opens in every browser and editor. It’s a great choice for Graphics, screenshots, logos, and editing.
Is it private?
Yes. Everything runs locally in your browser, so your BMP images are never intentionally sent to a server. Read more on our privacy page, or see whether converting images online is safe.
Frequently asked questions
Is this BMP to PNG converter free?
Yes. It’s completely free with no signup, no watermarks, and no per-file limits beyond sensible batch caps that keep your browser responsive.
Are my BMP files uploaded to a server?
No. Conversion happens entirely in your browser using WebAssembly and your device’s own image tools, so your files are never intentionally sent to a server.
Does converting BMP to PNG reduce quality?
PNG is a lossless format, so every pixel from the decoded image is preserved exactly — there’s no visible quality loss.
Can I convert multiple BMP files at once?
Yes. Add up to 50 files per batch, convert them together, and download them individually or as a single ZIP.
