+0.25%

TypeSizer window

TypeSizer window

If you are an InDesign user and you are involved in typography for reading sizes, this might be for you. TypeSizer is a small tool, a javascript for InDesign. Its buttons increase or decrease the size of the selected text by 0.25%. This means that small sizes will change in a very small amount, and big sizes will change in big steps.

Just think that with linear steps in point size, the increment gets smaller when the type gets bigger. A +0.5 step on a 6 point text is about 8%, but a +0.5 step on 30 point text is only 0.016%. See what I’m getting at? TypeSizer lets you take 0.25% proportional steps relative to the size of the text. The point size will become a non-integer, but hey, this is why we have scalable type. Your readers deserve your attention. Real microtypography geeks rock the floats on text sizes.

TypeMedia alumnus Colin M. Ford did most of the heavy lifting on implementing the tool and describes it in great detail. Download link and more info here.