Quality assurance teams used the 2021 viewer extensively for "redlining." Users can add comments, clouds, arrows, and text notes over the drawing without altering the original HICAD file.
For decades, HICAD has been a staple in German and Japanese mechanical engineering, steel construction, and plant design. However, because HICAD uses proprietary file extensions (such as .HIC , .SZA , and .SAB ), engineers using standard software like Autodesk Inventor or Dassault Systèmes SOLIDWORKS cannot open these files natively.
In the world of Computer-Aided Design (CAD), file compatibility is often the biggest bottleneck in production. While industry giants like AutoCAD and SolidWorks dominate the market, many specialized engineering and manufacturing sectors—particularly in Japan and East Asia—have long relied on a powerful, niche drafting tool known as HICAD . hicad viewer 2021
| Tool | Pros | Cons | | :--- | :--- | :--- | | | Native support, free (often), fast | End-of-life; no support for files created after 2021 | | Siemens NX | Fully compatible (same kernel) | Extremely expensive; overkill for viewing only | | Autodesk TrueView | Free | Does not open .HIC files without conversion | | eDrawings | Great for markups | Requires HICAD user to export to .EASM first | How to Download HICAD Viewer 2021 (Legitimate Sources) Disclaimer: Software links change frequently. Always verify with official vendors.
It can open and display any file created by HICAD 2018, 2019, 2020, and 2021. This includes complex 3D assemblies ( .HIC ), 2D drawings, and part libraries. Quality assurance teams used the 2021 viewer extensively
Last updated: October 2025
If your workflow relies exclusively on reading, measuring, and printing drawings created between 2015 and 2021, the HICAD Viewer 2021 remains a stable, lightweight tool that does not require an annual subscription. In the world of Computer-Aided Design (CAD), file
| Component | Minimum Requirement | Recommended | | :--- | :--- | :--- | | | Windows 10 (64-bit) | Windows 11 | | CPU | Intel Core i3 (2nd gen) | Intel Core i5 (8th gen) or AMD Ryzen 5 | | RAM | 4 GB | 8 GB | | GPU | Integrated Intel HD Graphics | Dedicated (NVIDIA Quadro or GTX 1050+) | | Storage | 500 MB free space | SSD with 1 GB space | | Display | 1366 x 768 | 1920 x 1080 (Full HD) | HICAD Viewer 2021 vs. Alternatives If you cannot find the original 2021 installer (as ISD has moved toward newer subscription models), consider these alternatives: