About BMP to PNG
PNG is lossless like BMP, so converting keeps every pixel exactly as it was, but PNG compresses the data, often making screenshots, diagrams and icons several times smaller. It also works in every browser, document editor and website, and supports transparency. That makes BMP to PNG the safe choice for graphics, interface captures and anything with text, where JPG would add blur around sharp edges. This converter handles 24-bit and 32-bit bitmaps, keeps alpha channels, and converts whole batches at once.
How to Use It
- 01
Add BMP files
Drop your bitmaps into the box, or tap to select them.
- 02
Optional resize
Leave the size as it is, or set a maximum width or height.
- 03
Save PNGs
Press Convert, then download each PNG or a ZIP of all of them.
Questions
Is BMP to PNG lossless?
Yes. PNG stores exactly the same pixels. Only the file size changes.
Why is my PNG still large?
Photos don't compress well losslessly. For photos, BMP to JPG gives far smaller files.
Does it keep transparency?
Yes. 32-bit BMPs with an alpha channel keep their transparent areas in the PNG.
Are my files uploaded?
No. Everything is converted in your browser.