Best tool to compress a transparent png file to its smallest

I've played around with the usual optipng, pngcrush, advpng but by far the best results are found with pngquant which is actually a lossy compressor.

Depending on the settings the "loss" can be invisible so you get the benefits of a small file with none of the drawbacks.

pngquant --quality=65-80

Submitted by oliver on Wed, 18/12/2013 - 15:28

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Yes. If you want to torture me put me on a locked down windows computer with a locked down network and no power for a day. — 15 years 6 weeks ago
can someone please #invent a mobile phone where the camera can double as an optical mouse — 15 years 8 weeks ago
@philhawksworth don't you mean thank goodness for @oliverpolden too :p — 15 years 8 weeks ago
What's #Debian like nowadays compared to #Ubuntu ? — 15 years 9 weeks ago
@gavman80s Pidgin will do all that and more and has done for years: http://2tu.us/1pha — 15 years 9 weeks ago
that doesn't work if no other checkboxes are checked by default #drupal contact-us?edit[submitted][mycheckboxes][0]=mycheckbox — 15 years 11 weeks ago
ahh, something like: contact-us?edit[submitted][mycheckboxes][0]=mycheckbox — 15 years 11 weeks ago
Is it possible to use the prepopulate module to check a checkbox on a webform? #drupal — 15 years 11 weeks ago