Theme thumbs and regeneration

Hello,

I have few concerns regarding theme thumbnail generation.

Allow me to describe situation.

Recently i was hired to take over client website (he had a lot of performance issues because of bad web hosting company etc.) and it turned out he is running your theme (really well coded theme and well coded support).

1. – when they installed your theme back then – of course they turned on absolutely all thumb available in Theme Panel > Block Settings > Thumbs on Modules/Blocks as can be seen here https://forum.tagdiv.com/theme-thumbs/

Problem is….they don’t use all modules – therefore theme is generating unnecessary thumbnails. Now they have over 250 000 images in their uploads folder?!?!

My question is – if i disable some of these thumbnail settings in Theme Panel > Block Settings > Thumbs on Modules/Blocks and if i regenerate thumbnails with Regenerate Thumbnail plugin – are these unnecessary thumbnails vanish from my media library – pardon uploads folder? ATM my uploads folder is 10GB big. I am guessing when i get rid on unnecessary thumbnails i will have at least 35% reduction in size.

2. of course i will use built in wordpress image compression (they did not used that previously) – as described here https://forum.tagdiv.com/how-to-make-the-site-faster/ i will add

add_filter( ‘jpeg_quality’, create_function(”, ‘return 50;’ ) );

to functions.php

When i regenerate thumbnails – will newly generated thumbnails follow rule of compression from function.php?

Thanks in advance

Thank you that topic is gold…