Okular does not allow review on PDF


I sometimes use Okular to annotate a PDF using highlighting, drawing boxes, underlining or writing notes. This feature is called review in Okular. However, I noticed that this review feature is disabled on certain PDF files. I did check the filesystem and the file was not readonly.


Turns out that when a PDF has DRM options set in it, Okular obeys those limitations by default. Thankfully, this can be turned off easily. Go to Settings β†’ Configure Okular β†’ General and uncheck the Obey DRM limitations option. You will need to restart Okular after you apply this. You will now be able to review the PDF.

Tried with: Okular 0.24.2 and Ubuntu 16.04

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