Open DLL File

Information, tips and instructions


What is DLL File?

DLL file is an executable file which is used as "Dynamic Link Library" or "Application Extension". Microsoft Windows applications can open DLL file and execute code from it.

What is DLL File Format?

DLL file format is based on Portable Executable (PE) file format. Portable executable file consists of multiple sections and headers which specify at which locations they should be loaded into memory.

Can DLL File Contain Virus?

Yes, DLL file can have virus inside. Since DLL file is in Portable Executable (PE) file format it can be executed. Or more specifically functions inside it could be executed. That is why it is recommended to never download DLL files on the computer from untrusted sites.

Is It Possible to Open DLL File?

DLL file is in binary file format and that's why you cannot view its content just by opening it in an editor. But you can use tools like DUMPBIN to dump contents of the file to a human readable format. Alternatively you can use HEX editor to view DLL file binary codes. Typically both DUMPBIN and HEX editors are used by developers.
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File Extension Info
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Extension Details
  Dynamic Link Library
Identifying Characters
  Hex: 4D 5A
Opens with
  Text Editor
  Microsoft Visual Studio
  Microsoft Disassembler

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