Mozjpeg

[Winapp2.ini]

https://blog.mozilla.org/research/2014/03/05/introducing-the-mozjpeg-project/

 

Mozilla's building a jpeg encoder which should reduce jpeg size considerably without affecting image quality. Should be interesting to see where they take it.

[Corona]

I'll stick with png whenever I can.

[Winapp2.ini]

agreed, but most websites (facebook being a prime example) serve jpegs

 

mozjpeg will convert png to jpeg if it can do so losslessly (which would mean same quality using less disk space)

[TheWebAtom]

I wish WebP would take off.

[Winapp2.ini]

Same. This isn't a competing format though, just an enhanced encoder. I actually don't think firefox supports webp but some pages serve them if you're using Chrome

[eL_PuSHeR]

For me JPEG is obsolete. I prefer PNG most of the time. I really doubt a lossless JPEG would take less space than its PNG counterpart, unless it's not really lossless.

[Andavari]

mozjpeg will convert png to jpeg if it can do so losslessly (which would mean same quality using less disk space)

 

Like others I prefer PNG since it's lossless. Although lossy JPEG does have its uses such as for embedding album art into music files without bloating them.