LinScreenCapture 3
Capture and annotate Linux screenshots in one studio.
A screenshot studio for Linux rebuilt on GTK 4 and Python. Capture a region, window or screen with one key and land straight in an editor with arrows, boxes, text, step numbers, callouts, blur and crop.
- statusv3.0
- licenseCC BY-NC 4.0
- built withPython 3.12 · GTK 4.14 · libadwaita 1.5
- GTK 4 + libadwaita
- X11 + Wayland
Free for education, research and personal projects; commercial use requires permission.
What it does
Features
- 01
Capture anywhere
Region, Region Plus, window and full-screen capture; every capture goes to the clipboard first, then the save folder, then the studio.
- 02
Annotate as layers
Arrows, lines, boxes, text, step numbers, callouts, blur and pixelate are movable, undoable layers with selection handles.
- 03
Background agent
A small agent keeps running after the studio closes; PrintScreen captures anywhere and the tray icon opens the editor.
- 04
Library
A full-stage page of the save folder, newest first, with thumbnails, select-all, copy, duplicate and trash delete.
- 05
Works on Wayland
X11 is verified with XGetImage; on Wayland the XDG desktop portal is tried first, with CLI backends as a last resort.
- 06
Keyboard-first
Single-letter tool keys, rail toggles, zoom shortcuts and a shortcuts window; toasts instead of dialogs.
A closer look
Install
Install the Debian package, or run the installer script for this user.
Requirements
- Python 3.12
- GTK 4.14 · libadwaita 1.5
- Cairo · Pillow · python-xlib
- XDG portal (Wayland sessions)
git clone https://github.com/MensuraMedia/linscreencapture3.git
cd linscreencapture3
./install.sh --deps- Then press PrintScreen: the agent starts at login and PrintScreen copies a region to the clipboard.
- Debian package, system-wide install and uninstall: INSTALL.md in the repository.
Full and current instructions: the README on GitHub.
At a glance
| Version | 3.0 |
|---|---|
| Phases | 1-5 of 7 implemented; Phase 6 in progress |
| Stack | Python 3.12 · GTK 4.14 · libadwaita 1.5 |
| Platforms | X11 verified; portal backend for Wayland |
| Licence | CC BY-NC 4.0 |