Is my BMP file uploaded to a server?

No. The conversion runs entirely in your browser using local processing. Your image never leaves your device.

Will the PNG look identical to my original BMP?

Yes. PNG is a lossless format, so every pixel is preserved exactly as it was in the BMP — no quality is lost.

Does PNG support transparency?

Yes. Unlike BMP, PNG supports an alpha channel, so if you need transparent backgrounds the PNG format is the right choice.

Is there a file size limit?

There is no enforced limit. Very large BMP files may take a moment to process depending on your device's speed, but the tool places no cap on file size.

BMP to PNG

WEB

Convert BMP images to PNG online — free, fast and private. Your files never leave your browser. Nothing is uploaded.

From

Convert to

Choose imagesor drop here

Add at least one image to continue.

Need PDF? Image → PDF PDF → Image

100% private — images never leave your browser.

What it does

BMP to PNG converts your raw bitmap images into compact, lossless PNG files directly in your browser — no upload, no account, no server ever sees your files. BMP files are uncompressed and bulky; PNG keeps every pixel identical while shrinking the file size dramatically, making it ideal for screenshots, icons, logos, and anything where sharp edges and transparency matter. Just drop your BMP onto the tool, and the conversion runs instantly on your device. The resulting PNG is ready to download in seconds. Because everything happens locally, your images stay completely private — Carbide never touches your data. It is 100 % free with no limits on file count or size, and it works fully offline once the page has loaded. No watermarks, no sign-up, no waiting.

How to use the BMP to PNG

Open the BMP to PNG tool in Carbide — no sign-up needed.
Click 'Choose file' or drag and drop your BMP image onto the upload area.
The tool converts the image instantly on your device — no uploading happens.
Click 'Download PNG' to save the converted file to your device.

Frequently asked questions

Is my BMP file uploaded to a server?: No. The conversion runs entirely in your browser using local processing. Your image never leaves your device.
Will the PNG look identical to my original BMP?: Yes. PNG is a lossless format, so every pixel is preserved exactly as it was in the BMP — no quality is lost.
Does PNG support transparency?: Yes. Unlike BMP, PNG supports an alpha channel, so if you need transparent backgrounds the PNG format is the right choice.
Is there a file size limit?: There is no enforced limit. Very large BMP files may take a moment to process depending on your device's speed, but the tool places no cap on file size.

Take Carbide everywhere

All 111 tools, offline, on iOS & Android — free.