Handy PNG optimisation

[bigsofty]

Just came across this little site for shrinking PNG sizes. I was a little worried about it as it's a lossy compression method but it looses unused colour channels and meta data, which was fine by me. I had great results on some files 85%+ compression.

Here's the site...

http://tinypng.org/

[Ruidesco]

Another option (if you run Windows) would be to use ScriptPNG.
There are also some other image optimization scripts there: http://css-ig.net/tools/

[spicypixel]

RIOT uses OptiPNG engine (so is nice as a GUI too) for the optimisation but RIOT also does GIF and JPEG also.

http://download.criosweb.ro/download.php?sid=R <<--- Link to Portable USB version

[Ian Price]

Some great tools here. Cheers

[Ruidesco]

Before "discovering" ScriptPNG & co, I did use RIOT. It gives good results but there are some things it does that are pretty annoying (for a web designer at least), mainly that it doesn't respect any kind of transparency when transforming to PNG8.

[spicypixel]

Before "discovering" ScriptPNG & co, I did use RIOT. It gives good results but there are some things it does that are pretty annoying (for a web designer at least), mainly that it doesn't respect any kind of transparency when transforming to PNG8.

You have a dropdown now where you can choose one of the external PNG optimisers so it'll probably remedy the 24bit --> 8bit alpha not being rendered.

[Ruidesco]

Yeah I know; I mean, I was using it until a month ago or so. None of the three worked with simple GIF-like transparency, much less partial transparencies in PNG8 images.

[spicypixel]

Didn't realise you had tried it so recently. Here's another PNG optimising download to add to the mix

http://pnggauntlet.com/

[bigsofty]

Yeah I know; I mean, I was using it until a month ago or so. None of the three worked with simple GIF-like transparency, much less partial transparencies in PNG8 images.

http://tinypng.org handles 24 bit to 8 bit+transparency well BTW.