When to convert BMP to PNG
Uncompressed Windows bitmap. Large files, so PNG output is usually the better choice.
PNG is lossless, so later edits and re-saves never add artefacts, and it keeps transparent backgrounds.
How it works on your device
- Runs
- In your browser
- Transparency
- Not applicable
- Batch size
- Up to 200 files
- BMP files are uncompressed, so expect the output to be far smaller than the input.
- Colour profiles are read on decode and the output is written in sRGB, the colour space every screen and browser expects.
How to convert BMP to PNG
- Open the converter and drop your .bmp files, up to 200 at a time.
- Choose PNG as the output.
- Convert, then download each file or one ZIP of the batch.
Questions
Is converting BMP to PNG free?
Yes. Conversion runs in your browser on every plan, with no account, no watermark and batches of up to 200 files.
Are my BMP files uploaded?
No. The browser decodes each file and encodes the new one on your device. Nothing is sent to a server.
Does converting BMP to PNG lose quality?
No further loss: PNG stores every pixel exactly. It cannot bring back detail an earlier lossy save removed, and the file is often larger than the original.
Can I make the PNG bigger at the same time?
Converting keeps the pixel size. To enlarge, run the upscaler afterwards: 2× is free and also runs on your device.