What happens when you convert BMP to PNG
| Compression | Lossless → Lossless |
|---|---|
| File size | Usually much smaller, roughly 63% less for photos |
| Metadata | EXIF, GPS location and camera data are not copied to the new file |
| Opens in | every browser, phone and image editor |
Sizes are typical values; your files will vary with content and settings.
BMP Windows Bitmap
BMP is the uncompressed bitmap format native to Windows. Files are large because each pixel is stored raw, but almost every program, embedded device and legacy system can read it.
BMP converterPNG Portable Network Graphics
PNG stores pixels with lossless DEFLATE compression and a full 8-bit alpha channel. It is the safe default for screenshots, logos, UI assets and anything with sharp edges or text, because every pixel survives exactly as drawn.
PNG converterHow to use the BMP to PNG Converter
- 1
Click Choose files or drop your BMP images onto the page.
- 2
Adjust the PNG options if needed. The defaults work well for most images.
- 3
Click Convert, then download each PNG or all of them as a ZIP.
Why convert BMP to PNG?
BMP files come from old Windows software, Paint, scanners and embedded devices that write raw bitmaps. Files are very large because there is no compression. Choose PNG when you need exact pixels or transparency, for example to keep editing the image or place it on a coloured background.
BMP to PNG settings
You can also cap the width and height, which resizes large photos in the same step.
Frequently asked questions
Will the PNG lose quality?
No. Both formats are lossless, so every pixel or sample in your BMP is kept exactly.
Will the PNG be smaller than the BMP?
Usually much smaller for photos: as a rough guide, the PNG comes out at around 35% of the BMP's size, depending on the quality setting.
Questions about privacy, file-size limits or conversion speed are answered in the general FAQ.