BMP to PNG Free
Convert BMP pictures to PNG at their original size. PNG is lossless and keeps transparency, so the file is larger than the same picture as JPG.
How to use it
- Choose one or more images, or drag them in.
- Set the options on the right. The result updates as you change them.
- Check the result, then press Download.
About BMP to PNG
When a BMP holds a screenshot, a diagram or scanned text, JPG is the wrong destination because it blurs exactly the sharp edges that make such images readable. PNG compresses the file substantially while keeping every pixel exactly as it was.
Good to know
- Lossless, so text and thin lines stay crisp instead of developing a halo.
- Still a very large size reduction from BMP, just not as large as JPG would give.
- The correct choice for anything containing text, tables or line art.
Questions
PNG or JPG for my BMP?
PNG for screenshots, diagrams and scanned text. JPG for photographs, where it is much smaller and the loss is invisible.
Is any quality lost?
None. PNG is lossless, so the result is pixel-identical to the BMP.
How much smaller does it get?
Typically several times smaller, and far more than that for simple graphics with large flat areas.
Does BMP transparency carry over?
Most BMP files have none. Where it exists, PNG preserves it.
Is my file uploaded anywhere?
No. Everything runs inside your browser using your own device. Your file never leaves it, and we never see or store it. You can even disconnect from the internet and the tool still works.
Is it really free?
Yes. No account, no daily limit, no watermark on your files. The site is paid for by ads.