If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .dll

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .dll file?
  • Which program can create the .dll file?
  • Where can you find a description of the .dll format?
  • What can convert .dll files to a different format?
  • Which MIME-type is associated with the .dll extension?
Windows Dynamic Linked Llibrary .dll file icon

Windows Dynamic Linked Llibrary

The DLL file is a Windows Dynamic Linked Library. A DLL is a file of code containing functions that can be called from other executable code (either an application or another DLL). Programmers use DLLs to provide code that they can reuse and to parcel out distinct jobs. Unlike an executable (EXE) file, a DLL cannot be directly run. DLLs must be called from other code that is already executing.
Category: Application files
Application: -
Program name: -
Mime-type: application/x-msdownload
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
.alx ActiveX Layout Control Data
.dl_ Compressed DLL File
.ppd PostScript Printer Description
.tlh Visual C++ TLH Header
.pjx Visual FoxPro Project

Other types of files may also use the .dll file extension. If you have helpful information about .dll extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

.dol Uniface Global Object Data
.dpl Digital Photo Librarian database
.wll Microsoft Word Add-In
.rll CA-Realizer RLL File
.dl Zoo Tycoon 2 Game Data
.vll VET Student Load Liability Data

The .dll filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

sll (1), cll (1), ll (1), fll (1), dpl (1), dml (1), dlo (1), dlk (1), xll (1), dl (1), vll (1), dil (1), rll (1), ldl (1), ell (1)

Can't open a .dll file?

If you want to open a .dll file on your computer, you just need to have the appropriate program installed. If the .dll association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.dll

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android