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Convert BMP to PNG online

Drop your BMP images in, download PNG back — converted locally in your browser, so nothing is ever uploaded. This page is preset to PNG output; the same converter handles every format, and no account or watermark is involved.

Conversion tool

or drag & drop them here

BMP files · converted on your device, never uploaded

Convert to

How to convert BMP to PNG

  1. Step 1

    Add your BMP images

    Drag BMP files onto the box or click to browse — queue as many as you like. They stay on your device the whole time.

  2. Step 2

    PNG is already set

    PNG is preset as the output and needs no quality setting — lossless conversion is one click.

  3. Step 3

    Convert and download

    Each finished row shows its new PNG size next to the original. Download the files one by one — no waiting rooms, no watermarks.

Should you convert BMP to PNG?

If you need the pixels kept exact but the file made sane, PNG compresses BMP's raw data losslessly — typically several times smaller — while storing every pixel untouched. Scanned documents, pixel data from lab tools, 1-bit masks: PNG keeps them verifiable.

In short: Choose BMP → PNG when every pixel must survive and size is secondary.

How BMP and PNG differ
Property BMP (source) PNG (output)
Compression None — raw, uncompressed pixels Lossless — every pixel stored exactly
Transparency Rarely exposed by the format Yes — full alpha channel
Best for Programs that must read pixels without image codecs Screenshots, logos, graphics with text and hard edges
Worth knowing BMP stores pixels without compression, so files are enormous compared to every other format here. Pixel-exact storage makes PNG files large for photographic content.

BMP to PNG — frequently asked questions

How do I convert BMP to PNG?

Drop your BMP files into the converter above (several at a time is fine), confirm the output is set to PNG, then hit convert and download the results. Everything happens locally in your browser while the files stay on your device.

Does converting BMP to PNG lose quality?

No extra quality is lost. PNG is lossless: it stores the decoded pixels exactly, so the copy adds no new artifacts of its own. (BMP stores pixels without compression, so files are enormous compared to every other format here.)

Will the PNG file be smaller than my BMP file?

Yes — PNG applies lossless compression to BMP's raw pixels, typically producing a file several times smaller while keeping every pixel identical.

What happens to transparency and EXIF metadata?

The PNG target supports transparency, so any that exists in your image is kept. EXIF metadata such as camera model, timestamps and GPS coordinates is not carried over: the output is written as a brand-new file containing pixels only. That is a privacy bonus, not a bug.

Are my images uploaded to a server?

No. The converter decodes and re-encodes your images locally in your browser using Web Workers. Your files never leave your device, which is why the tool keeps working even on slow or offline connections.

Other conversions

Converting several kinds of files? The full Convert Image tool handles every format in one place.

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