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Basic information about QSS file

When there is a problem with opening files with the file extension QSS（*.QSS or *.qss）, you do not need a computer expert. In most cases, using the helpful suggestions of experts contained in our website as well as appropriate programs, you can solve the problem with the QSS file yourself.

There are 1 file types using the QSS file extension in our database. In the further part of this page, you will find detail information about all the QSS file with their brief description and a list of programs that support QSS file sorted by operating systems. The table below provides useful information about the QSS file extension. It answers questions such as:
  • What is the QSS file?
  • How to open a QSS file?
  • What programs do I need to open a QSS file?
  • What programs help to create and edit a QSS file?
  • How to convert QSS files to another file format?
  • How to convert another files to QSS file format?


1.Detail information about QSS file extension: Qt Style Sheet

File type Qt Style Sheet Category Settings Files
Developer Digia File format Text
Description QSS file is a Qt Style Sheet developed by Digia. Style sheet file used by Qt (pronounced "cute") programs; contains definitions for the look and feel of GUI elements, including fonts, sizes, colors, layouts, and mouse-over behaviors; stores a library of styles that can be incorporated into a user interface.
Software programs that will open, edit or convert QSS files

Windows		 Digia Qt SDK
Microsoft Notepad
Nokia Qt Creator

macOS		 Digia Qt SDK
Nokia Qt Creator

Linux		 Digia Qt SDK
Nokia Qt Creator



Can't open a QSS file?

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

”Can't open this file: example.QSS”。

To open this file, you install one of the applications from the list of software programs that you found here, you should be able to open, edit or convert the file with the QSS extension without any issue.


Where I can download the application that support QSS file?

If you do not know where you can download the application from our list, click on the link (which is the name of the program), you will find more information there on the location where to download the required application. Most often they are the websites of software manufacturers.


How to change file associations?

  • Right-click a file with the extension whose association you want to change, and then click "Open With".
  • In the "Open With" dialog box, click the program whith which you want the file to open, or click "Browse" to locate the program that you want.
  • Select the ”Always use the selected program to open this kind of file” check box.


Can I change the extension of QSS 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/open the file. The problem is, changing the file extension does not change the file format. Select a software program from our list and install it on your computer. If the file has not opened correctly, you have to look for a different software program from our list. Sometimes you have to repeat the operation several times.


What else may cause problems width open a QSS file?

The reasons for the lack of the ability to open a QSS file on your computer may be at least several. The easiest thing is to find a suitable application installed on your computer, which will open a QSS file. If there is still something wrong, you might want to check:

  • Whether the QSS file is damaged.
  • Whether the QSS file is incorrectly linked in the registry entries.
  • Whether the QSS file extension has been accidentally removed from the Windows registry.
  • Whether the installation of an application that supports the QSS file format is incompletely.
  • Whether the QSS file is infected.
  • Whether the drivers of the equipment used for opening a QSS file are up to date.
  • Whether your computer has enough hardware resources to open a QSS file.

If the QSS file still not working with your software after eliminating the above shortcomings? That means that the problem is more complex and requires the help of a specialist.