Convert BMP to PNG
Convert BMP to PNG free, right here in your browser. You get the same picture with every pixel intact, in a file a fraction of the size — no quality given up anywhere. No signup, nothing to install, whole folders at once.
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Why convert BMP to PNG here
Converting BMP to PNG here is free, needs no account, and has no size limit set by us.
Your files stay with you
Converting your BMP here doesn't send it to a server. It happens on your own computer.
No account, no watermark
No email, no sign-up wall, and nothing stamped across the image you get back.
Whole batches at once
Drop a folder's worth of BMP files. They queue up together and come back as one zip.
We don't set a size limit
Convert a file of any size, as many times as you like. There is no plan tier and no daily cap.
Free, and it stays free
Every conversion here is free to use, with no trial, no credits and nothing held back behind a payment.
It just works
Drop your BMP in and take the PNG away. Nothing to install, nothing to set up first.
The rare conversion with nothing to trade away
Smaller file, identical picture. Most conversions ask you to give up something to gain something. This one doesn't.
A BMP writes down the colour of every dot in the image and compresses none of it. That is why even a plain screenshot of a mostly-white page arrives enormous — the format spends the same amount of room on empty white as it does on fine detail. It is a design from an era when simplicity mattered more than space.
PNG stores exactly the same pixels and packs them properly. Nothing is approximated, nothing is discarded, and no detail is softened. Open the PNG next to the BMP and you are looking at the same image — one of them just stopped wasting room. For screenshots, scans, diagrams and anything with text, this is simply the better file to keep.
When JPG beats PNG for a BMP
When the picture is a photograph. Then converting to JPG gets it smaller still, and the compression won't show.
Text, screens and flat colour
Screenshots, scanned documents, diagrams, logos, anything with lettering or hard edges. These are what most BMPs turn out to be, and they are exactly the images where lossy compression shows as fuzz around the edges of letters.
Photographs
A photograph has no hard edges to protect and enormous amounts of subtle detail, which is precisely what JPG is built for. You will get a far smaller file again, and at the default setting you would struggle to tell the two apart.
Questions people ask
None at all. Both formats keep every pixel exactly as it is — the difference is that PNG packs them intelligently and BMP doesn't. You end up with an identical picture in a much smaller file, which is about as close to a free win as image conversion gets.
Because a BMP writes down the colour of every single dot and squeezes nothing. A picture with millions of dots therefore takes millions of entries, regardless of how simple the image is. A screenshot of a mostly-white document costs the same as a detailed photograph of the same size.
PNG for almost anything that started life as a BMP — screenshots, scans, diagrams, logos, anything with text or flat areas of colour. It keeps edges crisp and loses nothing. JPG is the better pick only when the picture is a photograph, where it gets much smaller still and the compression does not show.
PNG can hold one, but a BMP almost never has one to carry across — the format is used for flat, fully opaque images. So your PNG will normally arrive opaque, with the advantage that you can cut a background out later and have that stored properly.
Yes, and this is the conversion where it pays off most. Drop in as many as you like; they queue together and come back as a single .zip that will be very much smaller than the folder you started with.