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Protect your .NET code in seconds

Upload a .NET DLL or EXE and download an obfuscated copy. Names are rewritten to make reverse engineering significantly harder — the output still runs exactly the same.

Obfuscate a file See Pro features

Obfuscate

Your tier: Free · Max 1 MB per file · Up to 1 file per batch

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Drop your .DLL or .EXE here

or click to browse · up to 1 MB

Obfuscate public names — applications only, ignored for libraries

Encrypt string literals — hides URLs and messages from decompilers

Block ILDasm — refuses the legacy disassembler

No source code required

Works directly on compiled .NET assemblies — no access to your source is needed.

Your IL stays valid

Only metadata is rewritten. The output assembly runs identically to the input.

Files never stored

Uploads are processed in memory and streamed back. Nothing is written to disk or kept.

Before you ship

Obfuscation is easy to apply and easy to misunderstand. These cover what it genuinely protects, what breaks and why, and whether this tool is the right one for your situation.

Concept What obfuscation actually protects against An honest breakdown of the threats it addresses — and the ones it does not. Guide What breaks, and why Reflection, serialization, XAML and DI are the usual suspects. Each with its fix. Use cases Is this right for your situation? Desktop apps, paid libraries, licensing, on-premise software and client deliverables. Comparisons How we compare ConfuserEx, Dotfuscator, .NET Reactor and others — including where they win.