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Details of the .hrl file extension

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

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

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

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

.hrl file extension details

Erlang Header File

Erlang Header File .hrl file icon
HRL file is an Erlang Header File. Erlang is a programming language used to build massively scalable soft real-time systems with requirements on high availability.
Category: Development files
Application: Erlang
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
HRL aliases:
HRL related links:
HRL related extensions:
Erlang EDoc Document

Erlang Source Code

Erlang Compiled BEAM File

Erlang Application Upgrade File

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

.hrl file extension error

The .hrl file extension is often given incorrectly!

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

url, hdl, nrl, htl, rl, hr, brl, trl, jrl, hel, grl, hrm, hl, rhl, hlr

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

HotDocs Template Library
Internet Shortcut
HP Graphic Language Document
HTL Source
Autonomy Interwoven Link
Multimedia Retrieval Markup Language File
The 7th Guest Archive
TRS 80 Image
BRL-CAD Document
Holux GM-101 Tracklog
open .hrl file

Can't open a .hrl 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 .hrl file association, check the FAQ.

.hrl 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 .hrl file extension, write to us!

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