This paper surveys free (open-source and permissively licensed) Human–Machine Interface (HMI) graphics libraries used in embedded, desktop, and web-based systems. It compares features, performance, ease of integration, tooling, and community support, and presents benchmarks, case studies, and recommended best practices for selecting and using a free HMI graphics library across common application domains.

for TIA Portal to speed up development and ensure a modern look for SIMATIC HMIs. Haiwell Standard Image Library : Includes specific icon packs for transformers, valves, reactors, and pumps , regularly updated as recently as April 2025. SVGHMI.pro : Features a modern SVG industrial widget library

Finding high-quality, free Human-Machine Interface (HMI) graphics can significantly enhance industrial visualization projects. Below are several reputable sources for free HMI graphic libraries and symbols, followed by a structured paper on the topic of HMI graphics integration. Free HMI Graphics Libraries

Several reputable industrial automation companies offer free, high-quality HMI graphics libraries featuring SVGs, PNGs, and specialized symbols for manufacturing, HVAC, and process control. Recommended Free HMI Graphics Libraries Opto 22 SVG and GIF Library : A comprehensive collection of free SVGs, PNGs, and animated GIFs