A daily updated filename extension database!

QLF file extension

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

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

✅ SWI-Prolog Quick Load File

QLF file is a SWI-Prolog Quick Load File. SWI-Prolog offers a comprehensive Free Software Prolog environment, licensed under the Lesser GNU Public License.
Application: SWI-Prolog
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
QLF aliases:
QLF related links:
QLF related extensions:
SWI-Prolog Source Code

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

🚫 The .qlf file extension is often given incorrectly!

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

lf, lqf, qf, qfl, qif, ql, qlb, qlc, qld, qlr, qlt, qlv, qmf, qpf

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

QGis LayerVersion Edit
Tencent QLV Video
SketchUp License FIle
QLeTTeX Letter Data
QEdit Data
LeechFTP Saved Queue
QuickBASIC Library
Qompose Web Page Template
Adobe Type Manager Type1 Fonts Script
Diploma Question File

🔴 Can't open a .qlf 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 .qlf 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 .qlf file extension, write to us!

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