What is the USL File Extension?

By:   |   Revised: November 26, 2018

Microsoft Silver

USL File Summary

Our most recent information indicates that USL files are associated with three unique file types (the most prevalent being the LaserJet Landscape Font File format) and can be viewed primarily with Classical Text Editor, including three other known software applications (listed below). Generally, these files are considered Font Files, but they can also be Data Files.

File Extension USL files have been identified on both desktop and mobile devices. They are fully or partially supported by Windows, Mac, and Linux. The Popularity Rating for USL files is "Low", which means these files are not ordinarily found on an everyday user's device.

If you are having problems opening USL files, or would simply like to learn more about the software programs and developers that are associated with them, please see the complete information contained below.

Low
Demand
8061
Position

/ 11690

Active

File Status

26

November

2018

Refreshed

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USL Types

  3 known file types use this extension

Main USL Affiliation

.USL
File Ext:.usl
Group:LaserJet Landscape Font File

The “USL” file extension is related to the software for LaserJet laser printers developed by (HP) Hewlett-Packard. The ”USL” file saves landscape font for HP LaserJet printers. The Landscape font format seems to be outdated without support from HP.

Created by: Hewlett-Packard
Division:Font Files
Location: HKEY_CLASSES_ROOT\.usl

Software Programs That Open The LaserJet Landscape Font File:


Classical Text Editor by Stefan Hagel

Windows

HP LaserJet Driver by Hewlett-Packard

Windows

More USL Files

.USL
File Ext:.usl
Group:PC-Bibliothek User Dictionary File

The “USL” file extension is related to the PC-Bibliothek. PC-Bibliothek is a software for Microsoft Windows operating system developed by the Bibliographisches Institut GmbH. The (.USL)file saves user dictionary used by PC-Bibliothek.

Created by: Bibliographisches Institut & F.A. Brockhaus AG
Division:Data Files

Software Programs That Open PC-Bibliothek User Dictionary File Files:


PC-Bibliothek by Bibliographisches Institut & F.A. Brockhaus AG

Compatible with:

Mac
Linux
.USL
File Ext:.usl
Group:ProWORX Nxt USL Loadable File

The “USL” file extension is related to ProWORX. ProWORX is an easy and useful programming software for Microsoft Windows operating system used for developing Modicon PLCs (programmable logic controllers). (.USL) suffix linked to the end of the file name that saves USL loadable data.

Created by: Schneider Electric
Division:Data Files

Software Programs That Open ProWORX Nxt USL Loadable File Files:


ProWORX by Schneider Electric

Compatible with:

Windows

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USL Demand


Primary Browsers

Chrome (58.80%)
Firefox (11.05%)
Internet Explorer (9.04%)
Edge (8.46%)
Safari (3.87%)


Sources of USL Problems


Common Problems Opening USL Files

Classical Text Editor Removed

If you attempt to load your USL file, you experience a message such as "Can't Open USL Files". If so, it typically means that you don't have Classical Text Editor installed for %%os%%. The typical path of opening your USL with a double-click won't work because %%os%% cannot make the program connection.


Tip: If you don't have Classical Text Editor installed, and you know of another program to open your USL file, you can try opening it by selecting from the programs listed under "Show Apps".


Outdated Classical Text Editor

In other instances, your LaserJet Landscape Font File file version may not be supported by your version of Classical Text Editor. Visit the Stefan Hagel website to download (or purchase) the latest version of Classical Text Editor. Your LaserJet Landscape Font File file was probably created by a newer release of Classical Text Editor than what's currently installed your computer.


Tip: Sometimes you can get a clue about the version of USL file you have by right clicking on the file, then clicking on "Properties" (Windows) or "Get Info" (Mac OSX).


Primarily, problems experienced when opening USL files are due to having the incorrect version of Classical Text Editor installed on your computer.


Associated Difficulties Loading USL Files

Although you might already have Classical Text Editor or another USL-associated software installed on your computer, you can still encounter problems opening LaserJet Landscape Font File files. Other USL opening errors can be created by other system problems inside of %%os%%. Other contributing causes:

  • Windows Registry USL file paths that are incorrect
  • The USL file description within the Windows Registry was removed
  • Defective install of a USL program, such as Classical Text Editor
  • USL file corruption
  • USL file integrity has been compromised by malware
  • Hardware related to USLs has device driver corruption
  • Windows has inadequate resources to open your LaserJet Landscape Font File file

Quiz: Which file extension is the most widely used on the World Wide Web?








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