compress_pdf_ratio.sh

#!/bin/bash

# Nautilus script to compress selected PDFs by approximate size ratio
# Requires: ghostscript, zenity, notify-send

if [ "$#" -eq 0 ]; then
    zenity --error --text="No PDF selected."
    exit 1
fi

# Ask user for compression multiplier
RATIO=$(zenity --scale \
    --title="Compress PDF" \
    --text="Choose target size multiplier.\n\nExample:\n30 = try around 30% of original size\n50 = try around 50% of original size\n80 = light compression" \
    --min-value=10 \
    --max-value=90 \
    --value=50 \
    --step=10)

if [ -z "$RATIO" ]; then
    exit 0
fi

# Convert ratio to Ghostscript settings
# Lower ratio = stronger compression
if [ "$RATIO" -le 20 ]; then
    RESOLUTION=72
    JPEG_QUALITY=35
elif [ "$RATIO" -le 40 ]; then
    RESOLUTION=96
    JPEG_QUALITY=45
elif [ "$RATIO" -le 60 ]; then
    RESOLUTION=120
    JPEG_QUALITY=55
elif [ "$RATIO" -le 80 ]; then
    RESOLUTION=150
    JPEG_QUALITY=70
else
    RESOLUTION=200
    JPEG_QUALITY=80
fi

for input in "$@"; do
    LOWER_FILE="${input,,}"

    if [[ "$LOWER_FILE" != *.pdf ]]; then
        notify-send "Invalid File" "'$input' is not a PDF."
        continue
    fi

    DIR="$(dirname "$input")"
    BASENAME="$(basename "$input" .pdf)"
    output="$DIR/${BASENAME}_compressed_${RATIO}x.pdf"

    gs \
        -sDEVICE=pdfwrite \
        -dCompatibilityLevel=1.4 \
        -dNOPAUSE \
        -dQUIET \
        -dBATCH \
        -dDetectDuplicateImages=true \
        -dCompressFonts=true \
        -dSubsetFonts=true \
        -dAutoRotatePages=/None \
        -dColorImageDownsampleType=/Bicubic \
        -dColorImageResolution="$RESOLUTION" \
        -dGrayImageDownsampleType=/Bicubic \
        -dGrayImageResolution="$RESOLUTION" \
        -dMonoImageDownsampleType=/Subsample \
        -dMonoImageResolution="$RESOLUTION" \
        -dJPEGQ="$JPEG_QUALITY" \
        -sOutputFile="$output" \
        "$input"

    if [ $? -eq 0 ]; then
        ORIGINAL_SIZE=$(du -h "$input" | cut -f1)
        NEW_SIZE=$(du -h "$output" | cut -f1)

        notify-send "PDF Compressed" "Original: $ORIGINAL_SIZE → New: $NEW_SIZE"
    else
        notify-send "PDF Compression Failed" "Failed to compress '$input'."
    fi
done

convert_to_pdf.sh

#!/bin/bash

for FILE in "$@"; do
    # Convert filename to lowercase
    LOWER_FILE="${FILE,,}"

    # Check if the file has a supported extension
    if [[ "$LOWER_FILE" == *.pptx || "$LOWER_FILE" == *.docx || "$LOWER_FILE" == *.doc ]]; then
        # Get the directory and filename without extension
        DIR="$(dirname "$FILE")"
        BASENAME="$(basename "$FILE")"

        # Convert to PDF using LibreOffice
        libreoffice --headless --convert-to pdf --outdir "$DIR" "$FILE"

        # Optional: Notify the user of completion
        notify-send "Conversion Complete" "Converted '$BASENAME' to PDF."
    else
        notify-send "Invalid File" "'$FILE' is not a supported document (.pptx/.docx/.doc)."
    fi
done

convert_webm_to_mp4.sh

#!/bin/bash

# Get full path of selected file
input="$1"

# Check if input ends with .webm
if [[ "$input" != *.webm ]]; then
    zenity --error --text="This script only works on .webm files."
    exit 1
fi

# Generate output file name
output="${input%.webm}.mp4"

# Launch in terminal to show progress
gnome-terminal -- bash -c "
echo 'Converting \"$input\" to \"$output\"...';
ffmpeg -i \"$input\" -vcodec libx264 -crf 23 \"$output\";
echo '';
echo 'Done!';
read -p 'Press Enter to close...' var
"

merge_pdf.sh

#!/bin/bash
# Nautilus script to merge selected PDFs with pdfunite

# Get directory of the first selected file
dir="$(dirname "$1")"
output="$dir/Merged.pdf"

# Run pdfunite on all selected files
pdfunite "$@" "$output"

# Notify user
if [ $? -eq 0 ]; then
    notify-send "PDF Merge" "Merged into $output"
else
    notify-send "PDF Merge Failed" "Something went wrong."
fi

NautilusScript.md

Nautilus Script for Linux

A collection of Nautilus Script for you to copy and paste

pdf_to_image_pdf.sh

#!/bin/bash

# Nautilus script to convert PDF into image-only PDF
# Output is saved as a separate file.
# Requires: poppler-utils, img2pdf, zenity, notify-send

if [ "$#" -eq 0 ]; then
    zenity --error --text="No PDF selected."
    exit 1
fi

DPI=$(zenity --scale \
    --title="PDF to Image PDF" \
    --text="Choose image quality DPI.\n\n150 = smaller file\n200 = balanced\n300 = sharper but larger file" \
    --min-value=100 \
    --max-value=300 \
    --value=200 \
    --step=50)

if [ -z "$DPI" ]; then
    exit 0
fi

for input in "$@"; do
    LOWER_FILE="${input,,}"

    if [[ "$LOWER_FILE" != *.pdf ]]; then
        notify-send "Invalid File" "'$input' is not a PDF."
        continue
    fi

    DIR="$(dirname "$input")"
    BASENAME="$(basename "$input" .pdf)"

    output="$DIR/${BASENAME}_image_only.pdf"

    # Avoid overwrite
    counter=1
    while [ -e "$output" ]; do
        output="$DIR/${BASENAME}_image_only_${counter}.pdf"
        counter=$((counter + 1))
    done

    TEMP_DIR="$(mktemp -d)"

    pdftoppm \
        -jpeg \
        -r "$DPI" \
        "$input" \
        "$TEMP_DIR/page"

    if [ $? -ne 0 ]; then
        notify-send "Conversion Failed" "Failed to convert '$input' to images."
        rm -rf "$TEMP_DIR"
        continue
    fi

    img2pdf "$TEMP_DIR"/*.jpg -o "$output"

    if [ $? -eq 0 ]; then
        ORIGINAL_SIZE=$(du -h "$input" | cut -f1)
        NEW_SIZE=$(du -h "$output" | cut -f1)

        notify-send "PDF Converted" "Created:
$output

Original: $ORIGINAL_SIZE
New: $NEW_SIZE"
    else
        notify-send "PDF Conversion Failed" "Failed to create image-only PDF."
    fi

    rm -rf "$TEMP_DIR"
done