Convert BMP to PNG

BMP to PNG: the quick version

BMP to PNG, done in your browser. Convert.diy converts your BMP files to PNG instantly — no uploads, no watermarks, no sign-up, and no limit on how many you convert. Because everything runs locally with WebAssembly, your files never touch a server.

BMP (Bitmap) is an uncompressed Windows format. Files are huge because pixels are stored raw with no compression. PNG is a lossless format with full transparency support, ideal for logos, screenshots, and graphics with sharp edges or text.

People usually convert BMP to PNG for graphics, logos, screenshots, transparency. Drop your files below, pick your quality, and download — it takes seconds.

How to convert BMP to PNG

Add files

Drop your BMP file(s) into the box above, or click to browse. Add as many as you like.

Convert

Pick PNG and adjust quality, then click Convert. It runs instantly on your device.

Download

Download each PNG, or all of them as a single zip.

Frequently asked questions

Is the BMP to PNG converter free?

Yes — it’s completely free with no limits, no watermarks, and no account required. Convert as many BMP files as you want.

Are my files uploaded to a server?

No. Conversion happens entirely inside your browser using WebAssembly, so your BMP files never leave your device. Nothing is uploaded, stored, or seen by anyone.

Can I convert multiple BMP files at once?

Yes. Add as many files as you like and convert them in one batch, then download them together as a zip.

Does the PNG keep transparency?

Yes — PNG is lossless and preserves the alpha channel, so any transparency in the source is kept.

Does it work on my phone?

Yes. Convert.diy works in any modern browser on iPhone, Android, Windows, Mac and Linux — no app to install.