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.DYLIB·File Extension

Dynamic Library — macOS dynamic library.

Data & Text

Quick facts

Extension.dylib
File typeDynamic Library
MIME type—
CategoryData & Text
Charset—
Compressible—
Format familymach-o

What is .dylib

What is a .dylib file?

A .dylib file is a Dynamic Library — macOS dynamic library.

In the mime-db registry it has no registered standard MIME type. When serving this file over HTTP, use a Content-Type that matches its actual format.

How to open .dylib files

  • Use Terminal or otool to open and edit .dylib files.
  • Any text editor (Notepad, VS Code) can inspect the raw content as text.

Developer info

When served over HTTP, responses should set the following header:

# No standard MIME type is registered for .dylib

Common software that reads/writes .dylib:

Terminalotool

Relation chain

.dylibextension of
format
mach-oserved as
mime type
—sent via header
http header
Content-Type

Related extensions

.accdb
Access Database
.avro
Avro Data File
.bash
Bash Script
.cfg
Configuration File

Common uses

  • Configuration files
  • Data interchange between systems
  • API request and response payloads
  • Logs and data exports

How to edit .dylib files

  • Open the file with Terminal, make your changes and save.
  • Most editors preserve the original formatting and encoding — avoid changing the charset.

How to create .dylib files

  • Create a new file and save it with the .dylib extension, or export this format from Terminal.

Frequently asked questions

What programs can open .dylib files?

Common options include Terminal, otool. You can also open many of these files with built-in viewers or a browser.

How do I create a .dylib file?

Create a new file in any text editor or the app that owns the format and save it with the .dylib extension.

Sources & standards

Updated 2026-09-13

Explore this reference

Related extensions

.accdb
Access Database
.avro
Avro Data File
.bash
Bash Script
.cfg
Configuration File

Related headers

Content-Type
HTTP header
Accept
HTTP header

Related methods

GET
HTTP method
POST
HTTP method
PUT
HTTP method
PATCH
HTTP method

Related status codes

200
OK
404
Not Found

about this tool

About This Tool

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