Image Tools

Collection of bash scripts for image processing and optimization.

Scripts

optimize-png.sh

Script to minimize PNG images

Usage:

./optimize-png.sh [colors] file1.png file2.png ...
./optimize-png.sh [colors] *.png

Or select files in Nemo file manager and run as script

Parameters:

colors - Number of colors (8-256, default: 256)
files - PNG files to minimize

Examples:

./optimize-png.sh image1.png image2.png    # Minimize specific files with 256 colors
./optimize-png.sh 128 *.png                # Minimize all PNG files with 128 colors
./optimize-png.sh 64 graphics/*.png        # Minimize PNG files in graphics folder

Features:

Minimized images will be saved in the 'min' subdirectory
When used as Nemo script, a dialog will ask for colors
Dual-mode operation (GUI/Terminal)
Progress tracking and batch processing
Quality control with color reduction

Dependencies:

pngquant for PNG optimization
zenity for GUI dialogs (usually pre-installed)

optimize-jpg.sh

Script to compress JPG images

Usage:

./optimize-jpg.sh [quality] file1.jpg file2.jpg ...
./optimize-jpg.sh [quality] *.jpg

Or select files in Nemo file manager and run as script

Parameters:

quality - Compression quality (1-100, default: 90)
files - JPG/JPEG files to compress

Examples:

./optimize-jpg.sh photo1.jpg photo2.jpg    # Compress specific files with quality 90
./optimize-jpg.sh 85 *.jpg                 # Compress all JPG files with quality 85
./optimize-jpg.sh 75 vacation/*.jpeg       # Compress JPEG files in vacation folder

Features:

Compressed images will be saved in the 'min' subdirectory
When used as Nemo script, a dialog will ask for quality
Dual-mode operation (GUI/Terminal)
Progress tracking and batch processing
Quality control with compression levels

Dependencies:

imagemagick for JPG compression (mogrify command)
zenity for GUI dialogs (usually pre-installed)

Installation

Install dependencies:

sudo apt install pngquant imagemagick  # Ubuntu/Debian
sudo dnf install pngquant ImageMagick  # Fedora
# Note: zenity is usually pre-installed with desktop environments

Make scripts executable:

chmod +x *.sh

For use as Nemo scripts, copy to:

~/.local/share/nemo/scripts/

Notes

All scripts support dual-mode operation:

Terminal mode: When run from command line
GUI mode: When run as Nemo file manager scripts with zenity dialogs

Both scripts create a 'min' subdirectory for optimized output files to preserve originals.

2.6 KiB Raw Permalink Blame History