1. Download the official release

Use the LinScreen 14.3.2 GitHub release. Avoid third-party mirrors because their contents and freshness cannot be verified by the project.

2. Make the file executable

chmod +x LinScreen-14.3.2-x86_64.AppImage

3. Check and start LinScreen

./LinScreen-14.3.2-x86_64.AppImage --version
./LinScreen-14.3.2-x86_64.AppImage

The version check should identify LinScreen 14.3.2.

Optional local text recognition

For French/English OCR (Shift+T), install Tesseract separately on your computer. On Debian/Ubuntu:

sudo apt install tesseract-ocr tesseract-ocr-fra tesseract-ocr-eng

Select a region, choose Extract text (OCR), then Recognize. Review and correct the result before Copy text. Recognition uses the edited capture in memory, with no upload or temporary image file created by LinScreen. It can be cancelled and is limited to 30 seconds, 16 million pixels and 1 MiB of text. Other tools work without Tesseract.

Wayland requirements

The AppImage includes Qt Wayland and English/French Qt translation catalogs. It does not install xdg-desktop-portal or a GNOME, KDE, GTK or wlroots backend.

Limitations

The build targets x86_64 Linux.
It does not install a desktop entry globally.
Permission dialogs remain controlled by the desktop.
The current build is beta software.

Related help

Read the setup notes for GNOME or KDE Plasma. If capture fails, follow the troubleshooting guide. For system integration use the Debian package.