AdjustMargins is a RoboFont extension created in 2015 by Alex Jacque.
What does it do?
AdjustMargins batch adjusts the left and right margins on your glyphs.
The amount you with to add/subtract from the margins on your selected glyph(s) (e.g. 100, -20, 42, -5). You can also use the = operand followed by a number to set the margin(s) explicitly to that measurement, or you can enter a glyph name to have the margins of your selected glyphs(s) to be changed to that glyphs margin measurements (e.g. =15, =-50, =A, =Oacute, =uni20B9).
Change all of the glyphs in your file, or just a selected subset.
Change both margins, change just the left margins, or change just the right margins
The MIT License (MIT)
Copyright (c) 2015 Alex Jacque (alexjacque.com)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.