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Details of the .otln file extension

The table below provides useful information about the .otln file extension. It answers questions such as:

  • What is the .otln file?
  • What program do I need to open a .otln file?
  • How can the .otln file be opened, edited or printed?
  • Where can I find the specifications for .otln?
  • Which MIME-type is associated with the .otln extension?
  • How can I convert .otln files to another format?
  • What are other, similar filename extensions to .otln?

We hope you find this page helpful and a valuable resource!

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

.otln file extension details

Opal Outline Document

Opal Outline Document .otln file icon
OTLN file is an Opal Outline Document. Opal is a flexible and easy to use outliner tool on Mac OS X.
OTLN format description not yet available
Category: Document files
Application: Opal
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
OTLN aliases:
OTLN related links:
OTLN related extensions:

Other types of files may also use the .otln file extension.

.otln file extension error

The .otln file extension is often given incorrectly!

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

otl, tln, otn, oln, otlb

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

NoteTab Outline
HyperLynx LineSim Schematic
OmniPage Training
Microsoft Visual C++ Outline Examples Data
open .otln file

Can't open a .otln file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .otln file association, check the FAQ.

.otln file extension

Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .otln file extension, write to us!

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