Download Qt 5.15.2 Offline Installer -

Open your browser and navigate to: https://download.qt.io/archive/qt/5.15/5.15.2/

Important Note: Qt 5.15.2 was released in 2020. For open-source users, offline installers for versions after 5.15.2 require a commercial license. Qt 5.15.2 is the last version with easily accessible official offline installers for open-source use.

wget https://download.qt.io/archive/qt/5.15/5.15.2/md5sums.txt md5sum qt-opensource-linux-x64-5.15.2.run download qt 5.15.2 offline installer

Using the offline installer for Qt 5.15.2 binds you to the GNU Lesser General Public License (LGPL) version 3 or the GNU General Public License (GPL) version 3.

Because 5.15.2 is open-source, no license key is required during installation. Simply click "Next" through the wizard. Open your browser and navigate to: https://download

Once the offline installer executable is obtained (commercial users) or the online installer is used, the installation process is as follows:

Directory Selection: Specify the installation path (e.g., C:\Qt\5.15.2).

Component Selection: Even in an offline installer for a specific version, you may be asked to select specific toolchains (e.g., MinGW, MSVC 2019 64-bit).

License Agreement: Read and accept the license terms.

Execution: Click "Install" and wait for the files to decompress and copy.

After downloading and running the offline installer, verify that everything works. Important Note: Qt 5

If a blank window appears, congratulations – your offline installation was successful.

Go to: https://download.qt.io/official_releases/online_installers/

Download the latest qt-online-installer for your OS.

If you prefer using the official online installer to build your own offline package: