I originally shared this image on my Facebook page a few months ago but wanted to share it again as it really is such a great explanation of why you should sometimes use a PNG (Portable Network Graphics) image instead of a JPEG/JPG (Joint Photographic Experts Group) image.
I often get asked to look at websites where the graphics are fuzzy (and you will see them quite often on social media too). Unsurprisingly these are usually JPEGs and this is the cause.
With a JPEG image, the original image is compressed and reduces the file size to about 5% of their normal size. This is great when you need to save space, but it also means that some detail can be lost. Hence this is known as ‘lossy compression’.
Portable Network Graphics (PNG) on the other hand is a raster graphics file format that supports ‘lossless’ compression. PNG was created as an improved, non-patented replacement for Graphics Interchange Format (GIF), and is the most used lossless image compression format on the Internet.
So, choose wisely young Padawan – whichever format you decide to use, it is always best to keep your originals and simply save copies of your files for conversion. That way, if it doesn’t work out you can always start again!