We moved back to the default PDF viewer as of OJS/OMP 3.3.0.
A PDF viewer for OJS 3.0.x based on OJS' pdfJsViewer
This is the DAI's customized PDF viewer plugin based on pdfJsViewer.
The actual viewer code (based on pdf.js) is provided prebuilt in the directory build. For development purposes use the corresponding docker repository and copy over the build directory.
This plugin is licensed under the GNU General Public License v2. See the file LICENSE for the complete terms of this license.