Flow Byte

Resizeer is a WordPress plugin designed to help you manage your media library more efficiently, ensuring your images are optimally sized for both web performance and quality. With Resizeer, you can automate the image resizing process, whether you’re uploading new images or dealing with existing ones in your library.

Resizeer

Optimize your images automatically and forget about resizing and compressing them manually before uploading to your WordPress site.

Lucas Milanez

The GZIP compression is one of the most important possibilities to optimize a website to get a better performance in loading pages. Consite send site codes in compressed format, so it takes up much less space and therefore it tranfiram the network faster.
Full post at:
https://www.oficinadanet.com.br/artigo/programacao/introducao_a_compressao_gzip_de_um_site

WP GZip

Simple plugin to enable or disable the GZip on your site. Only works on Apache servers

Resizeer vs WP GZip