Convert images, documents, video and audio in your browser. Your files stay on your device.
PNG keeps every pixel identical to the BMP but compresses the data: you get the same image in a much smaller file.
Drag one or more BMP files onto the dashed area, or tap it to pick them from your device.
PNG is already selected; the options hold the settings that matter for this conversion.
Press “Convert to PNG”. When it’s done, download the files one by one or all together in a ZIP archive.
Good to know. Ideal for screenshots and graphics exported from old Windows software.
Source format
BMP (Windows Bitmap)
The historic Windows format: it stores pixels almost always without any compression. It’s simple and faithful, but a Full HD image easily exceeds 6 MB. Scanners, old software and some industrial machines still produce it.
Target format
PNG (Portable Network Graphics)
Born as a free alternative to GIF, it keeps every pixel exactly as it is and supports transparency with 256 levels. It’s the natural choice for screenshots, logos, graphics with text and images you’ll edit several times.
No. Both BMP and PNG are lossless, so the image stays identical pixel for pixel.
No. The conversion from BMP to PNG happens entirely in your browser, using your device’s computing power. Files aren’t sent or stored anywhere: when you close the page they’re gone from memory too.
Up to 100 files at a time. There’s no fixed size limit: it depends on your device’s memory. On smartphones it’s best to work in smaller batches with heavy files such as videos.
Yes, with up-to-date Safari, Chrome, Firefox, Edge and Samsung Internet. On phones, converted files end up in the Downloads folder or the Files app.
Only to open the page (and, the first time, to download the components needed for that type of file). After that the conversion keeps working even if the connection drops.