Use 'wkhtmltoimage' to save an URL to a unique filename in a designated folder

url2image.sh

#!/usr/bin/env zsh -f

	# set this to whatever URL you want to capture
URL='https://www.abc.com'

	# folder where do you want screenshots to go
	# the folder will be created if it does not exist
DIR="$HOME/Desktop/Screenshots"

	# could also be 'png' if you prefer
FORMAT='jpg'

###############################################################
## You should not need to change anything below this line
###############################################################


if [[ -e "$HOME/.path" ]]
then
	source "$HOME/.path"
fi

if [[ ! -x /usr/local/bin/wkhtmltoimage ]]
then
	echo "$NAME: 	'/usr/local/bin/wkhtmltoimage' is not installed."
	echo "$NAME:	get it from https://wkhtmltopdf.org/downloads.html"
	exit 1
fi

	# this lets us use strftime in zsh
zmodload zsh/datetime

	# this gives us a timestamp like 2021-12-31--23.15.20
	# for December 31st, 2021 at 11:15:20 p.m.
TIME=$(strftime "%Y-%m-%d--%H.%M.%S" "$EPOCHSECONDS")

	# create folder if it doesn't exist
[[ ! -e "$DIR" ]] && mkdir -p "$DIR"

	# this is the filename we'll use
	# it starts with the directory
	# and ends with the time and the format (jpg by default)
FILE="$DIR/$TIME.$FORMAT"

	# this could be one long line, but I've formatted it
	# to hopefully make it easier to read
/usr/local/bin/wkhtmltoimage \
	--format "$FORMAT" \
	"$URL" \
	"$FILE"

exit 0

# EOF