Screen Toolkit

Screen Toolkit is a Noctalia plugin that groups several screen utilities in one panel.

Tools included:

• Color Picker
• Annotate
• Measure
• Pin
• Palette Extractor
• OCR (with optional translation)
• QR / Barcode Scanner
• Google Lens uploader
• Screen Recorder
• Webcam Mirror

Features:

Color Picker: Pick any pixel and get HEX, RGB, HSV, and HSL values. Includes copy buttons and color history.

Annotate: Select a region and draw on it (pencil, arrows, rectangles, text, blur). Save or copy the result.

Measure: Draw lines to measure pixel distances on screen.

Pin: Capture a region and keep it pinned as a floating overlay.

Palette: Extract dominant colors from a selected region.

OCR: Select a region and extract text. Optional translation is supported.

QR Scanner: Scan QR codes or barcodes from a selected region.

Google Lens: Upload a selected region to Google Lens.

Screen Recorder: Record a selected region as MP4 or GIF (GIF limited to ~15s). Optional system audio or microphone.

Webcam Mirror: Floating webcam preview window. Can be moved, resized, and flipped horizontally.

Requirements: grim, slurp, wl-clipboard, tesseract, imagemagick, zbar, curl, translate-shell, ffmpeg Screen recording: wl-screenrec (preferred) or wf-recorder (fallback) For GIF recording: gifski

Install packages:

Arch Linux: sudo pacman -S grim slurp wl-clipboard tesseract tesseract-data-eng imagemagick zbar curl translate-shell ffmpeg sudo pacman -S wl-screenrec # preferred recorder

or: sudo pacman -S wf-recorder # fallback

yay -S gifski

Debian / Ubuntu:
sudo apt install grim slurp wl-clipboard tesseract-ocr tesseract-ocr-eng imagemagick zbar-tools curl translate-shell wl-screenrec ffmpeg
cargo install gifski

Fedora: sudo dnf install grim slurp wl-clipboard tesseract tesseract-langpack-eng ImageMagick zbar curl translate-shell wl-screenrec ffmpeg cargo install gifski

openSUSE:
sudo zypper install grim slurp wl-clipboard tesseract-ocr tesseract-ocr-traineddata-english ImageMagick zbar curl translate-shell wl-screenrec ffmpeg
cargo install gifski

Compatibility:

NixOS: Add to your configuration.nix or home.nix:

environment.systemPackages = with pkgs; [
  grim slurp wl-clipboard tesseract imagemagick zbar curl
  translate-shell wl-screenrec ffmpeg gifski
];

For additional OCR languages, use e.g. (pkgs.tesseract.override { enableLanguages = [ "eng" "deu" ]; })

Compatibility: Tested on Hyprland and Niri.

IPC commands:

Screen Toolkit Commands

plugin:screen-toolkit

toggle → Open or close the panel
colorPicker → Launch color picker
ocr → Run OCR on a region
qr → Scan QR / barcode
lens → Upload region to Google Lens
annotate → Open annotation tool
measure → Start measuring overlay
pin → Pin a region to screen
palette → Extract colors
record → Start screen recording recordStop → Stop an active recording (useful when if mouse click is blocked during capture) mirror → Toggle webcam mirror

Example:

qs -c noctalia-shell ipc call plugin:screen-toolkit toggle