The read-only.json profile
File: media/plg_system_wtpdfjs-config/read-only.json. Disables PDF scripting and opens external links in a new window. The read-only filename describes its purpose: it does not prevent downloading, printing or editing, protect the file, or replace server access control.
JSON example
{
"enableScripting": false,
"externalLinkTarget": 2,
"defaultZoomValue": "page-fit",
"viewerCssTheme": 0,
"viewOnLoad": 1
}