Nine-Patch Sizing Lab
A downloadable tool
Calculates source center dimensions and flags target panels where the center collapses or margins exceed the target. Uses integer pixel margins.
Extract the ZIP and open the HTML file in your browser. A worked example is included. Inputs are processed locally.
Purchase
In order to download this tool you must purchase it at or above the minimum price of $2.49 USD. You will get access to the following files:
