working on Publications

public/publications/_first_page_image.sh

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+#!/bin/bash
+
+# --- Configuration ---
+# DPI for the output image. Higher DPI means higher resolution and larger file size.
+# Common values: 72, 96, 150, 300
+OUTPUT_DPI=150
+
+# PNG quality (0-100). 90 is a good balance.
+PNG_QUALITY=90
+
+# --- Script Logic ---
+
+# Check if magick command is available
+if ! command -v magick &> /dev/null
+then
+    echo "Error: 'magick' command not found. Please install ImageMagick."
+    echo "On Arch Linux, you can install it with: sudo pacman -S imagemagick"
+    exit 1
+fi
+
+# Check if any PDF files were provided as arguments
+if [ "$#" -eq 0 ]; then
+  echo "Usage: $0 <pdf_file1.pdf> [<pdf_file2.pdf> ...]"
+  echo "Converts the first page of each PDF to a PNG image using ImageMagick's 'magick' command."
+  exit 1
+fi
+
+echo "Starting PDF to PNG conversion using 'magick'..."
+echo "Output DPI: $OUTPUT_DPI, PNG Quality: $PNG_QUALITY"
+
+# Loop through all PDF files provided as arguments
+for pdf_file in "$@"; do
+  # Basic validation
+  if [ ! -f "$pdf_file" ]; then
+    echo "Error: File not found: $pdf_file. Skipping."
+    continue
+  fi
+
+  if [[ "$pdf_file" != *.pdf ]]; then
+    echo "Warning: '$pdf_file' does not appear to be a PDF file. Skipping."
+    continue
+  fi
+
+  echo "Processing: $pdf_file"
+
+  # Get the base filename without the extension
+  base_name=$(basename "$pdf_file" .pdf)
+
+  # Define the output PNG file name
+  output_png="${base_name}.png"
+
+  # Use magick to convert the first page ([0]) of the PDF to PNG
+  # -density: Sets the resolution (DPI)
+  # -quality: Sets the compression quality for PNG
+  # "$pdf_file[0]": Specifies the input PDF file and the first page (index 0)
+  # "$output_png": The desired output PNG file name
+  magick -density "$OUTPUT_DPI" -quality "$PNG_QUALITY" "$pdf_file[0]" "$output_png"
+
+  # Check the exit status of the magick command
+  if [ $? -eq 0 ]; then
+    echo "  -> Created: $output_png"
+  else
+    echo "  -> Error: Failed to create PNG for $pdf_file."
+    # You could add more specific error handling here if needed,
+    # e.g., trying to use a different density or quality.
+  fi
+done
+
+echo "Conversion finished."
+exit 0