screenshotMe.sh

#!/bin/bash

# Create a filename which contains the links you would like to take the screenshot of and pass it as first param.
# Make sure that the urls have correct scheme (http:// or https://)
# The second param is the prefix for screenshots saved.
# Screenshots will be in format: <PREFIX><COUNTER>.png
# Note: Firefox should not be running when running this script.

if [ $# -ne 2 ]; then
        echo "You need to provide input file"
        echo "./screenshotMe.sh <FILENAME> <SCREENSHOT PREFIX>"
        exit 1
fi

GREEN='\033[0;32m'
END='\033[0m'

message() {
        echo -e "${GREEN}[*] $1 ${END}"
}

save_screenshot() {
        firefox --headless --screenshot "$2$3.png" "$1" > /dev/null 2>&1
}

FILENAME="$1"
PREFIX="$2"

counter=1
while read -r line; do
        message "Taking screenshot of ${line}"
        save_screenshot "${line}" "${PREFIX}" ${counter}
        counter=$((counter+1))
done < "${FILENAME}"