Searching for a "portable" version of SolidWorks 2012 generally leads to unofficial, third-party "repacks" rather than an authorized version from Dassault Systèmes.
Key Features of SolidWorks 2012 Portable: Solidworks 2012 Portable
Security Hazards: Unofficial portable versions found on file-sharing sites often contain malware or keyloggers. Searching for a "portable" version of SolidWorks 2012
If you are still using Solidworks 2012, be aware that it may struggle with modern operating systems like Windows 10 or 11. Most Solidworks users can become proficient Solidworks 2012 Portable