Scald PDF is deprecated by Scald File. The latter works with any document file type.

PDF viewer inside Scald.

To test it quickly:
drush en -y scald_pdf scald_dnd_library atom_reference
then add a new Atom reference field.

If you have File Entity, you can configure File view mode per context. However, PDF module itself does not fully support it.

Supporting organizations: 

Project information

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