Website size increase

Hello,
I noticed on my “size_media.txt” that my site is already huge (66Go.)
I replace images with smaller images, it reduced the “size-content.txt” but the “size-media.txt” increase instead of reduce !
Is it because of caches or backups ? What is the difference between “content” et “media” ?
Thank you for your answer !

Kirby copies the files you use on the frontend from the content folder to the media folder. Additionally, if you create thumbs, these are also stored in the media folder, which serves basically as a cache for files. So yes, the more thumbs you create, the larger the media folder gets.

Thank your for your answer. Is it possible to delete caches ?

You can delete the media folder, yes, it will then be recreated.

I deleted my images one by one on the media folder, but what about the caches ? It still increase the size-media even if the size-content decrease.

Could you please rephrase? Not sure what you mean.

I already deleted the files I don’t use on the media folder, but still, my website size increase and increase.
I check it on a link the web developper gave me :…/size_content.txt and …/size-media.txt
The first one, …/size_content.txt decrease when I delete images but the other one …/size-media.txt increase and it is already more than 67Go, even if I try to clean my website.
I would like to know if there is a way to clean it properly, like caches, thumbs or others. All the things that my website have in memory but don’t usefull anymore ?

I already suggested that you delete the complete media folder.

and how can I do it please ?

You need access to the server and delete the folder via the file system.