Jul 19, 2026   Jul 19, 2026

Two ways on setting up Designer on Ubuntu 26.04 LTS

When it comes to installing the software "QtDesigner" you have the option either as Python-Package (qt6_applications/pyside6) or as Ubuntu-package. Following steps are ideal for my setup to work, either as Python- (recommened as pyside6 with latest version of the Qt-Framework and Designer) or as Ubuntu-Package (just the Designer):

Install Qt Widget Designer 6.11.1 as Python-Package (pyside6)

Install the PySide6 Python-Packages:

Terminal

pip3 install pyside6        

Executable for Qt-Designer will be found at: $HOME/.local/lib/python3.10/site-packages/qt6_applications/Qt/bin/designer

To Convert ui-File to Py-File use following console-command:

Usage of PyUIC6 (Python-Package)

Terminal

pyside6-uic [ui-File] -o [OUTPUT-File]

Install QtDesigner 6.10.2-1 as Ubuntu-Package

Install PySide6 as Python-packages (for PyUIC6) first:

Terminal

pip3 install pyside6

Then install the Designer Ubuntu-Packages:

Terminal

sudo apt install designer-qt6

Executable for Qt-Designer will be found at: /usr/lib/qt6/bin/designer

To Convert ui-File to Py-File use the same following console-command:

Usage of PyUIC6 (Python-Package)

Terminal

pyside6-uic [ui-File] -o [OUTPUT-File]