What program (method) for optimizing images for the site do you use?

Question

Images

Dear!
I ask you to advise a quick and high-quality way to optimize images (to increase the speed of loading a site on WP) / In general, I checked the site through Google Page Insights and in the results of the check you need to optimize images.
Interested in programs or methods where it is possible to quickly and efficiently compress JPG PNG images (by 20-30%) without changing the image resolution and file name. You need to process about 3-5k images.

Answer 1

https://tinypng.com and their APIs

#!/bin/bash
API_KEY="ВАШ АПИ"

if [ $API_KEY = "CHANGE_ME" ]
then
  echo "CHANGE THE API_KEY in this file."
  exit 1
fi

if ! type "jq" > /dev/null
then
  echo "Please install `jq`"
  exit 1
fi

find /var/www/mobil1/data/www/site.com/files/categories -type f \( -name  \*.jpg -o -name \*.png -o -name \*.jpeg \) -print0 | while IFS= read -r -d '' file; do #Директория в которой искать файлы для оптимизации

  json=$(curl -sS --user api:$API_KEY --data-binary @$file https://api.tinypng.com/shrink)
  url=$(jq -n "$json.output.url" | sed -e 's/^"//'  -e 's/"$//')

curl -sS $url > $file
done

Answer 2

File Optimizer