| Requirement | Feasibility | Reason | |-------------|-------------|--------| | Online | Possible for small EXEs | Browser limitations, file upload risks, no local compute for large binaries. | | Free | Limited | Advanced decompilers (IDA Pro, Hex-Rays) are paid. Free tools exist (dnSpy, Ghidra) but rarely online. | | Portable | Contradicts "Online" | Portable means local (USB); online means remote. Hybrid solutions exist (e.g., portable browser + web tool). |
After testing dozens of tools, these three match the keyword best. exe decompiler online free portable
Use a portable tool like Detect It Easy (portable) or simply open the EXE in Notepad++. If you see "This program must be run under Win32" followed by readable text like System.String, it’s .NET. file upload risks