David Dalton released new version of his compressed Prototype collection on Google Code. Awhile back, he took on the task of trying to determine how to best optimize the 120k+ Prototype and Script.aculo.us libraries and get the best compression out of the files.
This pack contains the following compressed versions of Prototype: 1.4, 1.5, 18.104.22.168, 1.6.0 and Scriptaculous: 1.7.1_beta3, 1.8.0. This release compresses Prototype and Scriptaculous around 10% more than regular gzipping.
Prototype’s lowest weighs in at 20.4kb.
Scriptaculous’ lowest weighs in at: 19.7kb.
Protoculous’ lowest weighs in at: 38.4kb.
Compressed forms of Scriptaculous are segmented to allow for custom builds of Protoculous/Scriptaculous.
He has included a common custom build with the pack, “Prototype+Effects”, which weighs in at around 26kb. That’s smaller than standard Prototype gzipped!
Protoculous also allows the loading of additional js files like Scriptaculous via: protoculous.js?load=one,two