These two formats are two of the most popular file formats on the web, however they have very distinct purposes. PNG is a lossless format that supports full transparency, perfect for graphics and icons. JPG applies efficient compression to create much smaller file sizes.
Main motivation to change PNG to JPG is storage. A single PNG file is often 5 to 10 times larger the equivalent JPG. For online use, this means directly to poor loading speed and worse PageSpeed results.
Changing PNG to JPG is the right option if you are handling photos that do not use a clear background. It is also perfect when you require to lower file size for quicker email attachments.
Note that PNG to JPG conversion is not always recommended. If your PNG file has a alpha channel such as a graphic, converting it to JPG replaces that transparency with white background, removing the alpha.
For optimal image conversion quality, use a compression level of 80 to 85 percent for online publishing. Try alljpgconverters.com for a totally free online PNG to JPG tool with no click here account needed.