Module for Omeka S to display pdf directly in public pages via the browser viewer or a customizable internal viewer.
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Pdf Viewer (module for Omeka S)

Pdf Viewer is a module for Omeka S that allows to display pdf files with the browser reader or via the customizable internal reader, the same Mozilla library pdf.js, at the choice of the admin and site admins.


The module uses an external library, pdf.js, so use the release zip to install it, or use and init the source.

See general end user documentation for installing a module.

  • From the zip

Download the last release from the list of releases (the master does not contain the dependency), and uncompress it in the modules directory.

  • From the source and for development

If the module was installed from the source, rename the name of the folder of the module to PdfViewer, and go to the root module, and run:

    npm install
    cd node_modules/pdf.js
    npm install
    gulp dist
    cd ../..

For update:

    npm update
    cd node_modules/pdf.js
    npm update
    gulp dist
    cd ../..


All resources of Omeka S that are in pdf are automatically displayed by the Pdf Viewer, so you have nothing to do.

Options can be set differently for each site:

  • in site settings for the integration of the player;
  • in the json file "config.json" of pdf.js for the player itself: copy and update the files in asset/vendor/pdfjs and/or the file common/pdf-viewer-inline.phtml inside your theme.


Use it at your own risk.

It’s always recommended to backup your files and your databases and to check your archives regularly so you can roll back if needed.


See online issues on the module issues page on GitHub.


This module is published under the CeCILL v2.1 licence, compatible with GNU/GPL and approved by FSF and OSI.

This software is governed by the CeCILL license under French law and abiding by the rules of distribution of free software. You can use, modify and/ or redistribute the software under the terms of the CeCILL license as circulated by CEA, CNRS and INRIA at the following URL "".

As a counterpart to the access to the source code and rights to copy, modify and redistribute granted by the license, users are provided only with a limited warranty and the software’s author, the holder of the economic rights, and the successive licensors have only limited liability.

In this respect, the user’s attention is drawn to the risks associated with loading, using, modifying and/or developing or reproducing the software by the user in light of its specific status of free software, that may mean that it is complicated to manipulate, and that also therefore means that it is reserved for developers and experienced professionals having in-depth computer knowledge. Users are therefore encouraged to load and test the software’s suitability as regards their requirements in conditions enabling the security of their systems and/or data to be ensured and, more generally, to use and operate it in the same conditions as regards security.

The fact that you are presently reading this means that you have had knowledge of the CeCILL license and that you accept its terms.

The pdf.js library is published under the Apache license.


Javascript library pdf.js:

  • Copyright Mozilla, 2011-2017

Module Pdf Viewer for Omeka S:

  • Copyright Daniel Berthereau, 2017 (see Daniel-KM on GitHub)