Shameless plug: https://recompressor.com/ https://recompressor.com/ Gives you a kb-vs-quality tradeoff graph. A little over the top perhaps, but when you just

Shameless plug: https://recompressor.com/ https://recompressor.com/ Gives you a kb-vs-quality tradeoff graph. A little over the top perhaps, but when you just need to do a couple of quick images… ;)