wget https://download.qt.io/archive/qt/5.15/5.15.2/md5sums.txt md5sum qt-opensource-linux-x64-5.15.2.run
When you search for "download qt 5.15.2 offline installer", you will encounter dozens of third-party websites. Proceed with extreme caution.
Next to each installer is a SHA256 checksum file. After downloading, verify the hash to ensure the file is not corrupted. download qt 5.15.2 offline installer
Windows (PowerShell):
Get-FileHash .\qt-opensource-windows-x86-5.15.2.exe
macOS/Linux:
shasum -a 256 qt-opensource-mac-x64-5.15.2.dmg
Compare the output to the value in the .sha256 file on the website.
Qt 5.15.2 is from November 2020. It does not receive official security updates via the open-source channel anymore (those are reserved for commercial license holders). wget https://download
If you are building a production web-facing application, consider paying for a commercial license or moving to Qt 6. However, for legacy hardware, internal tools, or embedded systems—this is the gold standard.