jpeg is smaller(compressed) in size, the algorithm is "lossy" and jpg (jpeg) does not support transparency; furthermore jpg compression introduces "artifacts" which degrade the appearance especially when the image is magnified. ["Lossy" means that original information in the image (prior to applying the compression algorithm) is lost - you cannot retrieve the original image.] jpg files have a headder in which EXIF information such as shutter speed camera type, geotagging... is stored
png is often larger in size (unless it is a very simple image with great expanses of a single color) and supports transparency and is lossless. ["Lossless" meand that the original information is retained and is retrieved when the image is displayed] The png format has no (standardized) way of including EXIF data - which adds information about the picture such as shutter speed camera type, geotagging...
Obviously you see the advantages of png but if file size is the most important and the image is complex then jpg often is good enough. Both are widly supported by Web Browsers and image processing software. Few cameras save in png format
PNG is an image file format, such as JPEG or BMP. One of the differences between PNG and JPEG, is that PNG supports transparency.
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
.jpeg, .bmp, .png
.png .jpeg
PNG, BMF, or TIFF files
JPEG2000 is a newer version of the JPEG encoding algorithm.
Image file formats.
JPEG: for photos/images - higher resolution images are smaller in JPG format PNG: for transparency, design elements, logos, etc.
new mac computers use PNG to create their screen shot files - they have very small file sizes. new mac computers use PNG to create their screen shot files - they have very small file sizes. PNG is usually used for images with transparent pixels because PNG accepts transparent areas on image and jpeg doesnt. PNG is larger in size then jpeg but give better quality because doesnt compress file as much as jpeg on save.
There are many formats such as jpeg,gif,png and (for favicons) ico. Jpeg format is the best
.jpg and .jpeg stand for Joint Photographic Experts Group, and .png stands for Portable Network Graphic