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ALN file extension

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

  • What is the .aln file?
  • What program do I need to open a .aln file?
  • How can the .aln file be opened, edited or printed?
  • How can I convert .aln files to another format?

Table of Contents

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

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

✅ ClustalW2 Alignment Data

ALN file is a ClustalW2 Alignment Data. Clustal is a widely used multiple sequence alignment computer program.
Category: Data files
Application: ClustalW2
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
ALN aliases:
ALN related links:
ALN related extensions:
ClustalW2 Guide Tree Data

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

🚫 The .aln file extension is often given incorrectly!

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

alb, zln, ln, apn, anl, amn, alg, wln, lan, aon, an, alm

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

JASC Image Commander Album
A-Law Compressed Audio File
Alphacam Nest List
Alpha Five Data
Alpha Five Library
Excellon Drill File
Alpine APN Wallpaper
Alphacam Laser Param Macro
Alphacam Laser VB Macro

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

🔴 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 .aln file extension, write to us!

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