Depending on how complicated the site is, "wget --mirror" might be enough. Also searching for "wordpress freeze site" found this plugin: https://wordpress.org/e

Depending on how complicated the site is, "wget --mirror" might be enough. Also searching for "wordpress freeze site" found this plugin: https://wordpress.org/extend/plugins/static-html-output-plugin/ https://wordpress.org/extend/plugins/static-html-output-plug...