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101
image-tools/README.md
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101
image-tools/README.md
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# Image Tools
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Collection of bash scripts for image processing and optimization.
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## Scripts
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### optimize-png.sh
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Script to minimize PNG images
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**Usage:**
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```bash
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./optimize-png.sh [colors] file1.png file2.png ...
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./optimize-png.sh [colors] *.png
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```
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Or select files in Nemo file manager and run as script
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**Parameters:**
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- `colors` - Number of colors (8-256, default: 256)
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- `files` - PNG files to minimize
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**Examples:**
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```bash
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./optimize-png.sh image1.png image2.png # Minimize specific files with 256 colors
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./optimize-png.sh 128 *.png # Minimize all PNG files with 128 colors
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./optimize-png.sh 64 graphics/*.png # Minimize PNG files in graphics folder
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```
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**Features:**
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- Minimized images will be saved in the 'min' subdirectory
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- When used as Nemo script, a dialog will ask for colors
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- Dual-mode operation (GUI/Terminal)
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- Progress tracking and batch processing
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- Quality control with color reduction
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**Dependencies:**
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- `pngquant` for PNG optimization
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- `zenity` for GUI dialogs (usually pre-installed)
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---
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### optimize-jpg.sh
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Script to compress JPG images
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**Usage:**
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```bash
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./optimize-jpg.sh [quality] file1.jpg file2.jpg ...
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./optimize-jpg.sh [quality] *.jpg
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```
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Or select files in Nemo file manager and run as script
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**Parameters:**
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- `quality` - Compression quality (1-100, default: 90)
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- `files` - JPG/JPEG files to compress
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**Examples:**
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```bash
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./optimize-jpg.sh photo1.jpg photo2.jpg # Compress specific files with quality 90
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./optimize-jpg.sh 85 *.jpg # Compress all JPG files with quality 85
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./optimize-jpg.sh 75 vacation/*.jpeg # Compress JPEG files in vacation folder
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```
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**Features:**
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- Compressed images will be saved in the 'min' subdirectory
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- When used as Nemo script, a dialog will ask for quality
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- Dual-mode operation (GUI/Terminal)
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- Progress tracking and batch processing
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- Quality control with compression levels
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**Dependencies:**
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- `imagemagick` for JPG compression (mogrify command)
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- `zenity` for GUI dialogs (usually pre-installed)
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## Installation
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1. Install dependencies:
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```bash
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sudo apt install pngquant imagemagick # Ubuntu/Debian
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sudo dnf install pngquant ImageMagick # Fedora
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# Note: zenity is usually pre-installed with desktop environments
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```
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2. Make scripts executable:
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```bash
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chmod +x *.sh
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```
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3. For use as Nemo scripts, copy to:
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```bash
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~/.local/share/nemo/scripts/
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```
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## Notes
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All scripts support dual-mode operation:
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- **Terminal mode**: When run from command line
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- **GUI mode**: When run as Nemo file manager scripts with zenity dialogs
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Both scripts create a 'min' subdirectory for optimized output files to preserve originals.
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297
image-tools/optimize-jpg.sh
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297
image-tools/optimize-jpg.sh
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#!/bin/bash
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# Script to compress JPG images with progress bar
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# Usage: ./minimize-jpg.sh [quality] file1.jpg file2.jpg ...
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# Usage: ./minimize-jpg.sh [quality] *.jpg
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# Works as Nemo script with selected files
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# Default quality: 90
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# Colors for output
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m' # No Color
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# Function to get quality from user via dialog (for Nemo)
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get_quality_dialog() {
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local quality=90
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# Try zenity
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if command -v zenity &> /dev/null; then
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quality=$(zenity --entry \
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--title="JPG Compression Quality" \
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--text="Enter compression quality (1-100):" \
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--entry-text="90" \
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2>/dev/null)
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# Check if user cancelled or entered invalid value
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if [ $? -ne 0 ] || [ -z "$quality" ]; then
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echo "90"
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return
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fi
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else
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# No dialog available, use default
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echo "90"
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return
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fi
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# Validate quality
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if [[ "$quality" =~ ^[0-9]+$ ]] && [ "$quality" -ge 1 ] && [ "$quality" -le 100 ]; then
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echo "$quality"
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else
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echo "90"
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fi
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}
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check_imagemagick() {
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if ! command -v mogrify &> /dev/null; then
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echo -e "${RED}Error: ImageMagick is not installed.${NC}"
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echo -e "${YELLOW}Install ImageMagick with:${NC}"
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echo " Ubuntu/Debian: sudo apt-get install imagemagick"
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echo " CentOS/RHEL: sudo yum install ImageMagick"
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echo " Arch: sudo pacman -S imagemagick"
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exit 1
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fi
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}
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# Main function
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main() {
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local quality=90
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local file_args=()
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local quality_was_explicit=false
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# Parse arguments
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for arg in "$@"; do
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if [[ "$arg" =~ ^[0-9]+$ ]] && [ "$arg" -ge 1 ] && [ "$arg" -le 100 ]; then
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quality="$arg"
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quality_was_explicit=true
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else
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# Add all non-numeric arguments as potential file paths
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file_args+=("$arg")
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fi
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done
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# Check if ImageMagick is installed
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check_imagemagick
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# Create output directory
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local output_dir="min"
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if [ ! -d "$output_dir" ]; then
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mkdir -p "$output_dir"
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echo -e "${GREEN}Created output directory: $output_dir${NC}"
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fi
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# Get files to process
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local jpg_files=()
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# If we have file arguments, process them
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if [ ${#file_args[@]} -gt 0 ]; then
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# Process file arguments (expand patterns and check files)
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for pattern in "${file_args[@]}"; do
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# Use shell expansion for patterns like *.jpg
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for file in $pattern; do
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if [[ -f "$file" ]] && [[ "$file" =~ \.(jpg|jpeg|JPG|JPEG)$ ]]; then
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jpg_files+=("$file")
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fi
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done
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done
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else
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echo -e "${RED}Error: No files specified.${NC}"
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echo -e "${YELLOW}Usage from terminal: $0 [quality] file1.jpg file2.jpg ...${NC}"
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echo -e "${YELLOW}Usage from terminal: $0 [quality] *.jpg${NC}"
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echo -e "${YELLOW}Or select files in Nemo and run as script${NC}"
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exit 1
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fi
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if [ ${#jpg_files[@]} -eq 0 ]; then
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echo -e "${YELLOW}No JPG files found to process.${NC}"
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exit 0
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fi
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local total_files=${#jpg_files[@]}
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local total_size_before=0
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local total_size_after=0
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# Detect if running from Nemo (file manager) or terminal
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local use_gui=false
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local quality_from_dialog=false
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local original_quality=$quality
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# Only use GUI if:
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# 1. Quality wasn't explicitly set
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# 2. We're likely running from Nemo (NEMO_SCRIPT_SELECTED_FILE_PATHS is set)
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# 3. zenity is available
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if [ "$quality_was_explicit" = false ] && [ -n "$NEMO_SCRIPT_SELECTED_FILE_PATHS" ] && command -v zenity &> /dev/null; then
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local dialog_quality
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dialog_quality=$(get_quality_dialog)
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if [ -n "$dialog_quality" ]; then
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quality="$dialog_quality"
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quality_from_dialog=true
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use_gui=true
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fi
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fi
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# Show initial info only for terminal
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if [ "$use_gui" = false ]; then
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echo -e "${GREEN}JPG compression started${NC}"
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echo -e "${BLUE}Quality set to: ${quality}%${NC}"
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echo -e "${BLUE}Files to process: ${total_files}${NC}"
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echo -e "${BLUE}Output directory: ${output_dir}${NC}"
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echo ""
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fi
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# Calculate total size before compression
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for file in "${jpg_files[@]}"; do
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if [ -f "$file" ]; then
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size=$(stat -f%z "$file" 2>/dev/null || stat -c%s "$file" 2>/dev/null)
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total_size_before=$((total_size_before + size))
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fi
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done
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# Process each file with appropriate progress display
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local count=0
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if [ "$use_gui" = true ]; then
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# Use zenity progress bar for GUI
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(
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for file in "${jpg_files[@]}"; do
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if [ -f "$file" ]; then
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count=$((count + 1))
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filename=$(basename "$file")
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output_file="${output_dir}/${filename}"
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echo "# Compressing $filename... ($count/$total_files)"
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# Copy and compress the file
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cp "$file" "$output_file"
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mogrify -quality "$quality" "$output_file"
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echo "$((count * 100 / total_files))"
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fi
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done
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) | zenity --progress --title="JPG Compression" --text="Initializing..." --percentage=0 --auto-close
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# Check if user cancelled
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if [ $? -ne 0 ]; then
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zenity --error --text="Compression was cancelled."
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exit 1
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fi
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else
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# Use terminal progress bar
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for file in "${jpg_files[@]}"; do
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if [ -f "$file" ]; then
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count=$((count + 1))
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filename=$(basename "$file")
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output_file="${output_dir}/${filename}"
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# Show terminal progress
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local percentage=$((count * 100 / total_files))
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printf "\r${BLUE}[%3d%%] Processing $filename ($count/$total_files)${NC}" "$percentage"
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# Copy and compress the file
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cp "$file" "$output_file"
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mogrify -quality "$quality" "$output_file"
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fi
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done
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echo "" # New line after progress
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fi
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# Calculate total size after compression
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for file in "${jpg_files[@]}"; do
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filename=$(basename "$file")
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output_file="${output_dir}/${filename}"
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if [ -f "$output_file" ]; then
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size=$(stat -f%z "$output_file" 2>/dev/null || stat -c%s "$output_file" 2>/dev/null)
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total_size_after=$((total_size_after + size))
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fi
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done
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# Calculate statistics
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local saved_bytes=$((total_size_before - total_size_after))
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local saved_percentage=0
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if [ "$total_size_before" -gt 0 ]; then
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saved_percentage=$((saved_bytes * 100 / total_size_before))
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fi
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# Convert bytes to readable format with automatic KB/MB selection
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local size_before_display
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local size_after_display
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local saved_display
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local unit_before="MB"
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local unit_after="MB"
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local unit_saved="MB"
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# Check if sizes are less than 1MB to display in KB
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if [ "$total_size_before" -lt 1048576 ]; then
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size_before_display=$((total_size_before / 1024))
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unit_before="KB"
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else
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size_before_display=$((total_size_before / 1024 / 1024))
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fi
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if [ "$total_size_after" -lt 1048576 ]; then
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size_after_display=$((total_size_after / 1024))
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unit_after="KB"
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else
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size_after_display=$((total_size_after / 1024 / 1024))
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fi
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if [ "$saved_bytes" -lt 1048576 ]; then
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saved_display=$((saved_bytes / 1024))
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unit_saved="KB"
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else
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saved_display=$((saved_bytes / 1024 / 1024))
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fi
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# Show final report
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if [ "$use_gui" = true ]; then
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# Show report with zenity
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local report_message="✓ Compression completed!\n\n"
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report_message+="Files processed: ${total_files}\n"
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report_message+="Original size: ${size_before_display} ${unit_before}\n"
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report_message+="Compressed size: ${size_after_display} ${unit_after}\n"
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report_message+="Space saved: ${saved_display} ${unit_saved} (${saved_percentage}%)\n"
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report_message+="Quality used: ${quality}%\n"
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report_message+="Output directory: ${output_dir}/"
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zenity --info --title="JPG Compression Complete" --text="$report_message"
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else
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# Show report in terminal
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echo ""
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echo -e "${GREEN}✓ Compression completed!${NC}"
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echo ""
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echo -e "${BLUE}Statistics:${NC}"
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echo -e " Files processed: ${total_files}"
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echo -e " Original size: ${size_before_display} ${unit_before}"
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echo -e " Compressed size: ${size_after_display} ${unit_after}"
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echo -e " Space saved: ${saved_display} ${unit_saved} (${saved_percentage}%)"
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echo -e " Quality used: ${quality}%"
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echo -e " Output directory: ${output_dir}/"
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fi
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}
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# Show help if requested
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if [[ "$1" == "-h" || "$1" == "--help" ]]; then
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echo -e "${GREEN}Script to compress JPG images${NC}"
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echo ""
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echo -e "${YELLOW}Usage:${NC}"
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echo " $0 [quality] file1.jpg file2.jpg ..."
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echo " $0 [quality] *.jpg"
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echo " Or select files in Nemo file manager and run as script"
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echo ""
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echo -e "${YELLOW}Parameters:${NC}"
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echo " quality Compression quality (1-100, default: 90)"
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echo " files JPG/JPEG files to compress"
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echo ""
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echo -e "${YELLOW}Examples:${NC}"
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echo " $0 photo1.jpg photo2.jpg # Compress specific files with quality 90"
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echo " $0 85 *.jpg # Compress all JPG files with quality 85"
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echo " $0 75 vacation/*.jpeg # Compress JPEG files in vacation folder"
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echo ""
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echo -e "${BLUE}Note: Compressed images will be saved in the 'min' subdirectory${NC}"
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echo -e "${BLUE} When used as Nemo script, a dialog will ask for quality${NC}"
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echo -e "${BLUE} Requires zenity for GUI dialog${NC}"
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exit 0
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fi
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# Execute main
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main "$@"
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297
image-tools/optimize-png.sh
Normal file
297
image-tools/optimize-png.sh
Normal file
@@ -0,0 +1,297 @@
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#!/bin/bash
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# Script to minimize PNG images with progress bar
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# Usage: ./minimize-png.sh [colors] file1.png file2.png ...
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# Usage: ./minimize-png.sh [colors] *.png
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# Works as Nemo script with selected files
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# Default colors: 256
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# Colors for output
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m' # No Color
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# Function to get colors from user via dialog (for Nemo)
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get_colors_dialog() {
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local colors=256
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# Try zenity
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if command -v zenity &> /dev/null; then
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colors=$(zenity --entry \
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--title="PNG Color Reduction" \
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--text="Enter number of colors (8-256):" \
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--entry-text="256" \
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2>/dev/null)
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# Check if user cancelled or entered invalid value
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if [ $? -ne 0 ] || [ -z "$colors" ]; then
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echo "256"
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return
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fi
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else
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# No dialog available, use default
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echo "256"
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return
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fi
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# Validate colors
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if [[ "$colors" =~ ^[0-9]+$ ]] && [ "$colors" -ge 8 ] && [ "$colors" -le 256 ]; then
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echo "$colors"
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else
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echo "256"
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fi
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}
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# Function to check if pngquant is installed
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check_pngquant() {
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if ! command -v pngquant &> /dev/null; then
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echo -e "${RED}Error: pngquant is not installed.${NC}"
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||||
echo -e "${YELLOW}Install pngquant with:${NC}"
|
||||
echo " Ubuntu/Debian: sudo apt-get install pngquant"
|
||||
echo " CentOS/RHEL: sudo yum install pngquant"
|
||||
echo " Arch: sudo pacman -S pngquant"
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exit 1
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||||
fi
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||||
}
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||||
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# Main function
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main() {
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local colors=256
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local file_args=()
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||||
local colors_was_explicit=false
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||||
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||||
# Parse arguments
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||||
for arg in "$@"; do
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if [[ "$arg" =~ ^[0-9]+$ ]] && [ "$arg" -ge 8 ] && [ "$arg" -le 256 ]; then
|
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colors="$arg"
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||||
colors_was_explicit=true
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else
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||||
# Add all non-numeric arguments as potential file paths
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||||
file_args+=("$arg")
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||||
fi
|
||||
done
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||||
|
||||
# Check pngquant
|
||||
check_pngquant
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||||
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||||
# Create output directory
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||||
local output_dir="min"
|
||||
if [ ! -d "$output_dir" ]; then
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||||
mkdir -p "$output_dir"
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||||
echo -e "${GREEN}Created output directory: $output_dir${NC}"
|
||||
fi
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||||
|
||||
# Get files to process
|
||||
local png_files=()
|
||||
|
||||
# If we have file arguments, process them
|
||||
if [ ${#file_args[@]} -gt 0 ]; then
|
||||
# Process file arguments (expand patterns and check files)
|
||||
for pattern in "${file_args[@]}"; do
|
||||
# Use shell expansion for patterns like *.png
|
||||
for file in $pattern; do
|
||||
if [[ -f "$file" ]] && [[ "$file" =~ \.(png|PNG)$ ]]; then
|
||||
png_files+=("$file")
|
||||
fi
|
||||
done
|
||||
done
|
||||
else
|
||||
echo -e "${RED}Error: No files specified.${NC}"
|
||||
echo -e "${YELLOW}Usage from terminal: $0 [colors] file1.png file2.png ...${NC}"
|
||||
echo -e "${YELLOW}Usage from terminal: $0 [colors] *.png${NC}"
|
||||
echo -e "${YELLOW}Or select files in Nemo and run as script${NC}"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ ${#png_files[@]} -eq 0 ]; then
|
||||
echo -e "${YELLOW}No PNG files found to process.${NC}"
|
||||
exit 0
|
||||
fi
|
||||
|
||||
local total_files=${#png_files[@]}
|
||||
local total_size_before=0
|
||||
local total_size_after=0
|
||||
|
||||
# Detect if running from Nemo (file manager) or terminal
|
||||
local use_gui=false
|
||||
local colors_from_dialog=false
|
||||
local original_colors=$colors
|
||||
|
||||
# Only use GUI if:
|
||||
# 1. Colors wasn't explicitly set
|
||||
# 2. We're likely running from Nemo (NEMO_SCRIPT_SELECTED_FILE_PATHS is set)
|
||||
# 3. zenity is available
|
||||
if [ "$colors_was_explicit" = false ] && [ -n "$NEMO_SCRIPT_SELECTED_FILE_PATHS" ] && command -v zenity &> /dev/null; then
|
||||
local dialog_colors
|
||||
dialog_colors=$(get_colors_dialog)
|
||||
if [ -n "$dialog_colors" ]; then
|
||||
colors="$dialog_colors"
|
||||
colors_from_dialog=true
|
||||
use_gui=true
|
||||
fi
|
||||
fi
|
||||
|
||||
# Show initial info only for terminal
|
||||
if [ "$use_gui" = false ]; then
|
||||
echo -e "${GREEN}PNG minimization started${NC}"
|
||||
echo -e "${BLUE}Colors set to: ${colors}${NC}"
|
||||
echo -e "${BLUE}Files to process: ${total_files}${NC}"
|
||||
echo -e "${BLUE}Output directory: ${output_dir}${NC}"
|
||||
echo ""
|
||||
fi
|
||||
|
||||
# Calculate total size before compression
|
||||
for file in "${png_files[@]}"; do
|
||||
if [ -f "$file" ]; then
|
||||
size=$(stat -f%z "$file" 2>/dev/null || stat -c%s "$file" 2>/dev/null)
|
||||
total_size_before=$((total_size_before + size))
|
||||
fi
|
||||
done
|
||||
|
||||
# Process each file with appropriate progress display
|
||||
local count=0
|
||||
if [ "$use_gui" = true ]; then
|
||||
# Use zenity progress bar for GUI
|
||||
(
|
||||
for file in "${png_files[@]}"; do
|
||||
if [ -f "$file" ]; then
|
||||
count=$((count + 1))
|
||||
filename=$(basename "$file")
|
||||
output_file="${output_dir}/${filename}"
|
||||
|
||||
echo "# Minimizing $filename... ($count/$total_files)"
|
||||
|
||||
# Minimize the file
|
||||
pngquant --output "$output_file" --force "$colors" "$file"
|
||||
|
||||
echo "$((count * 100 / total_files))"
|
||||
fi
|
||||
done
|
||||
) | zenity --progress --title="PNG Minimization" --text="Initializing..." --percentage=0 --auto-close
|
||||
|
||||
# Check if user cancelled
|
||||
if [ $? -ne 0 ]; then
|
||||
zenity --error --text="Minimization was cancelled."
|
||||
exit 1
|
||||
fi
|
||||
else
|
||||
# Use terminal progress bar
|
||||
for file in "${png_files[@]}"; do
|
||||
if [ -f "$file" ]; then
|
||||
count=$((count + 1))
|
||||
filename=$(basename "$file")
|
||||
output_file="${output_dir}/${filename}"
|
||||
|
||||
# Show terminal progress
|
||||
local percentage=$((count * 100 / total_files))
|
||||
printf "\r${BLUE}[%3d%%] Processing $filename ($count/$total_files)${NC}" "$percentage"
|
||||
|
||||
# Minimize the file
|
||||
pngquant --output "$output_file" --force "$colors" "$file"
|
||||
fi
|
||||
done
|
||||
echo "" # New line after progress
|
||||
fi
|
||||
|
||||
# Calculate total size after compression
|
||||
for file in "${png_files[@]}"; do
|
||||
filename=$(basename "$file")
|
||||
output_file="${output_dir}/${filename}"
|
||||
if [ -f "$output_file" ]; then
|
||||
size=$(stat -f%z "$output_file" 2>/dev/null || stat -c%s "$output_file" 2>/dev/null)
|
||||
total_size_after=$((total_size_after + size))
|
||||
fi
|
||||
done
|
||||
|
||||
# Calculate statistics
|
||||
local saved_bytes=$((total_size_before - total_size_after))
|
||||
local saved_percentage=0
|
||||
if [ "$total_size_before" -gt 0 ]; then
|
||||
saved_percentage=$((saved_bytes * 100 / total_size_before))
|
||||
fi
|
||||
|
||||
# Convert bytes to readable format with automatic KB/MB selection
|
||||
local size_before_display
|
||||
local size_after_display
|
||||
local saved_display
|
||||
local unit_before="MB"
|
||||
local unit_after="MB"
|
||||
local unit_saved="MB"
|
||||
|
||||
# Check if sizes are less than 1MB to display in KB
|
||||
if [ "$total_size_before" -lt 1048576 ]; then
|
||||
size_before_display=$((total_size_before / 1024))
|
||||
unit_before="KB"
|
||||
else
|
||||
size_before_display=$((total_size_before / 1024 / 1024))
|
||||
fi
|
||||
|
||||
if [ "$total_size_after" -lt 1048576 ]; then
|
||||
size_after_display=$((total_size_after / 1024))
|
||||
unit_after="KB"
|
||||
else
|
||||
size_after_display=$((total_size_after / 1024 / 1024))
|
||||
fi
|
||||
|
||||
if [ "$saved_bytes" -lt 1048576 ]; then
|
||||
saved_display=$((saved_bytes / 1024))
|
||||
unit_saved="KB"
|
||||
else
|
||||
saved_display=$((saved_bytes / 1024 / 1024))
|
||||
fi
|
||||
|
||||
# Show final report
|
||||
if [ "$use_gui" = true ]; then
|
||||
# Show report with zenity
|
||||
local report_message="✓ Minimization completed!\n\n"
|
||||
report_message+="Files processed: ${total_files}\n"
|
||||
report_message+="Original size: ${size_before_display} ${unit_before}\n"
|
||||
report_message+="Minimized size: ${size_after_display} ${unit_after}\n"
|
||||
report_message+="Space saved: ${saved_display} ${unit_saved} (${saved_percentage}%)\n"
|
||||
report_message+="Colors used: ${colors}\n"
|
||||
report_message+="Output directory: ${output_dir}/"
|
||||
|
||||
zenity --info --title="PNG Minimization Complete" --text="$report_message"
|
||||
else
|
||||
# Show report in terminal
|
||||
echo ""
|
||||
echo -e "${GREEN}✓ Minimization completed!${NC}"
|
||||
echo ""
|
||||
echo -e "${BLUE}Statistics:${NC}"
|
||||
echo -e " Files processed: ${total_files}"
|
||||
echo -e " Original size: ${size_before_display} ${unit_before}"
|
||||
echo -e " Minimized size: ${size_after_display} ${unit_after}"
|
||||
echo -e " Space saved: ${saved_display} ${unit_saved} (${saved_percentage}%)"
|
||||
echo -e " Colors used: ${colors}"
|
||||
echo -e " Output directory: ${output_dir}/"
|
||||
fi
|
||||
}
|
||||
|
||||
# Show help if requested
|
||||
if [[ "$1" == "-h" || "$1" == "--help" ]]; then
|
||||
echo -e "${GREEN}Script to minimize PNG images${NC}"
|
||||
echo ""
|
||||
echo -e "${YELLOW}Usage:${NC}"
|
||||
echo " $0 [colors] file1.png file2.png ..."
|
||||
echo " $0 [colors] *.png"
|
||||
echo " Or select files in Nemo file manager and run as script"
|
||||
echo ""
|
||||
echo -e "${YELLOW}Parameters:${NC}"
|
||||
echo " colors Number of colors (8-256, default: 256)"
|
||||
echo " files PNG files to minimize"
|
||||
echo ""
|
||||
echo -e "${YELLOW}Examples:${NC}"
|
||||
echo " $0 image1.png image2.png # Minimize specific files with 256 colors"
|
||||
echo " $0 128 *.png # Minimize all PNG files with 128 colors"
|
||||
echo " $0 64 graphics/*.png # Minimize PNG files in graphics folder"
|
||||
echo ""
|
||||
echo -e "${BLUE}Note: Minimized images will be saved in the 'min' subdirectory${NC}"
|
||||
echo -e "${BLUE} When used as Nemo script, a dialog will ask for colors${NC}"
|
||||
echo -e "${BLUE} Requires pngquant for PNG optimization${NC}"
|
||||
exit 0
|
||||
fi
|
||||
|
||||
# Execute main
|
||||
main "$@"
|
||||
Reference in New Issue
Block a user