Why convert BMP to PNG
- Screenshots and graphics produced by old tools as BMP.
- Anything you need to keep pixel-exact but share or store sensibly.
How to convert BMP to PNG in ConvertX
- 1
Open Image Converter
On the Home screen tap Image Converter.
- 2
Select your BMP files
Tap "Select image files" and pick the BMP images (.bmp). On desktop you can also drag them in from Explorer or Finder.
- 3
Choose PNG as the target
In the output format list choose PNG.
- 4
Optional settings
Add a rename pattern (use {name} for the original file name), turn on "Keep photo details" if you want camera and location data copied into PNG, and pick an output folder (Android default: Pictures/ConvertX).
- 5
Start the batch
Tap "Convert N images". The Queue opens and processes them in order; you can stop one file or the whole batch.
- 6
Find the results
When the batch finishes, the summary shows the files converted and the space saved. Tap View Library to browse them, or find them in the output folder.
What to know before you convert
- BMP has no transparency, so the PNG is opaque.
- For photographs the PNG is still large; BMP to JPG saves far more.
BMP vs PNG: what changes
| BMP | PNG | |
|---|---|---|
| Compression | Lossless: always | Lossless: always |
| Transparency | No | Yes |
| Animation | No | No |
| Keeps EXIF in ConvertX | No | Yes |
| ConvertX reads it | Yes | Yes |
| ConvertX writes it | Yes | Yes |
| Extensions | .bmp | .png |
BMP: Windows' raw bitmap: no compression, huge files, trivial to decode. PNG: Lossless with transparency. Perfect for graphics, wasteful for photos.
Nothing is uploaded
ConvertX converts on the device. There is no server, no account and no file size or count limit beyond your storage. Location and camera details are removed from every output unless you turn on "Keep photo details" (PNG can carry them).
Frequently asked questions
Is BMP to PNG lossless?
Yes. Every pixel is identical.
Why is my PNG still big?
Photographic content compresses poorly without loss. Use JPG or WebP for photos.
Related
Ready? Download ConvertX: free, with no ads, on Android and desktop.