This paper introduces Zimpler, a free tool built on the ZIMPL modeling language to streamline the solution of mixed-integer linear programs (MILP). Zimpler extends existing ZIMPL workflows by integrating native data sources—such as Excel spreadsheets—without requiring manual conversion to text-based tables. In addition, it supports solution refinement by adapting solver outputs into alternative formats, including machine-friendly exchange files like JSON. Finally, Zimpler automates the end-to-end process of model creation, solver invocation, and solution refinement, lowering the engineering effort needed to deploy optimization models in practice, unaware of the involved tools, platform and file formats.