jpeg is smaller (followed by png, gif and a bmp-which is largest).
The effect of the GIF,JPEG,PNG,BMP and TIFF on the data transfer
Yes, BMP files can be compressed, but they are typically uncompressed by default, which results in larger file sizes. Compression can be achieved using lossless methods, such as ZIP compression, or by converting BMP files to other formats like JPEG or PNG, which inherently support compression. However, converting to a lossy format may result in a loss of image quality.
.jpeg, .bmp, .png
PNG is an image file format, such as JPEG or BMP. One of the differences between PNG and JPEG, is that PNG supports transparency.
Image file formats.
PNG, JPEG, TIFF, GIF, PSD, or BMP.
When a picture is saved uncompressed from paint. You should use PNG instead of BMP as it still retains the quality loss-less but compresses it.
Size (in MB) is the main disadvantage. BMP (.bmp) or Bitmaps are huge image files. By using simple Jpeg (.jpg), PNG (.png) or GIF (.gif) compression you can greatly reduce an image size, especially for web applications. A bitmap of say, 500,000 Bytes can easily be reduced to some 15,000 Bytes by converting the image to Jpeg and slightly compressing it.
BMP or PNG of size smaller than 240X320.
MSPaint can compress *.bmp files as JPEG, TIFF, PNG and GIF.
You can use an image viewer like Irfanview to save the image and use the proper image setting to save as a PNG. Or the same with an image editor like GIMP.