Custom scripts are added to the <head> tag of each page in your marketplace.Custom scripts are active on all pages, for all users (whether they are logged in or not). Custom scripts are not active in pages of the admin panel.
This feature can be dangerous and should only be used by administrators who know what they are doing. In a worst-case scenario, your marketplace might be unable to load and be unavailable for users. Some technical knowledge is required to write custom code.
Note: Modifications made with custom scripts might break with page layout changes. As custom scripts can modify any part of the page, we have no way to guarantee that it will continue to work when changes are made to Panther . Keep this in mind and use this with caution.