Most tools let you choose between "Assembly" (low-level) or "Pseudo-code" (looks like C/C++).
This guide breaks down how these tools work, the best free options available, and the safety precautions you should take. What is an EXE Decompiler? exe decompiler online free install
Never download "Pro" versions of decompilers for free from untrusted sites; these are often bundled with malware. Most tools let you choose between "Assembly" (low-level)
If your EXE contains sensitive logic or proprietary secrets, do not upload it to a public online decompiler. These sites may store your files on their servers. For sensitive work, use an offline tool like Ghidra (developed by the NSA and completely free). Never download "Pro" versions of decompilers for free
Use a "PE identifier" or an online scanner like VirusTotal . If the file is .NET or Java-based, decompilation will be very successful. If it’s native C++, it will be much harder to read.
Work on a Mac or Linux machine even if the EXE is Windows-based.