Не испытывал. Просто нашёл ссылку.
http://www.wundes.com/JS4AI/
Set All The Things v.1.2 ::
CS,CS2,CS3,CS4
To download this script: right-click and select "Save Link As"
Wanna Batch Transform objects?
Illustrator has built in tools to resize each selected item,
but only by percentage, not by hard values. I made this script because I could find no
native way to set the width of all selected objects to 100px at once.
This script can accept multiple parameters at once.
To change, for instance, both width and height at the same time,
at the 'attributes' prompt, enter width,height
then at the 'values' prompt, enter a comma separated value list like 20,30
If a single value is passed for 'values', that value will be applied to all chosen properties.
Дополнение из другого источника:
It says CS-CS4 but I've had it work fine in CS5 and CS6. All credit, rights etc to John Wundes.