BMP to PNG converter
Turn BMP files into PNG for free. The conversion runs entirely in your browser, so your pictures are never uploaded anywhere.
How to convert BMP to PNG
- Add your BMP files. Drop one or more .bmp files on the box above, or tap it to pick them from your device.
- Let it convert. Each picture is converted to PNG in about a second, right in your browser.
- Download the PNG. Press Download next to each file. Nothing was sent to a server, so close the tab and it's gone.
What is a BMP file?
BMP is the old uncompressed Windows bitmap format. It stores raw pixels, so files are huge but simple.
What is PNG?
PNG is a lossless image format. Every pixel is kept exactly, and it supports full transparency, which makes it the standard for logos, screenshots and graphics.
Why convert BMP to PNG?
BMP is great for very old software and some industrial tools, but enormous files and almost no web support. PNG is the better choice for lossless quality and transparent backgrounds that work everywhere; keep in mind photos as PNG are much larger than the same photo as JPG or WebP.
Will I lose quality?
No. PNG is lossless, so every pixel that BMP gave us is kept exactly.
Private by design
Most online converters upload your file to their servers. This one doesn't: the converter itself is loaded into your browser and works offline from there, so your pictures never leave your phone or computer.
Questions
Is this BMP to PNG converter free?
Yes, completely free, with no sign-up, no watermark and no daily limit.
Are my BMP files uploaded?
No. The conversion happens inside your browser on your own device. Nothing is sent to us or anyone else.
Can I convert BMP to PNG on iPhone or Android?
Yes. It works in Safari, Chrome and other modern browsers on phones and tablets.
Can I convert several files at once?
Yes. Drop as many as you like; they are converted one after another and each gets its own download button.
Is there a file size limit?
No fixed limit. Very large pictures (100+ megapixels) may be slow on phones.