====== Ubuntu - PDF - Remove password from pdf ======

There are many tools that can manipulate PDFs, including:

  * PDF Toolkit (pdftk)
  * QPDF
  * xpdf-utils
  * Evince


<WRAP info>
**NOTE:**  The PDF Toolkit (**pdftk**) works for me, so instructions below are using this.
</WRAP>


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===== Using the PDF Toolkit (pdftk) =====

==== Install the PDF Toolkit (pdftk) ====

<code bash>
sudo apt install pdftk
</code>

----

==== Remove the password from the PDF ====

<code bash>
pdftk secured.pdf input_pw password output unsecured.pdf
</code>

----

===== Using QPDF =====

==== Install QPDF ====

<code bash>
sudo apt install qpdf
</code>

----

==== Remove the password from the PDF ====

<code bash>
qpdf –password=password –decrypt secured.pdf unsecured.pdf
</code>

----

===== Using xpdf-utils =====

==== Install xpdf-utils ====

<code bash>
sudo apt install xpdf-utils
</code>

----

==== Remove the password from the PDF ====

<code bash>
pdftops -upw password secured.pdf unsecured.pdf
</code>

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===== References =====

https://www.howtogeek.com/197195/how-to-remove-a-password-from-a-pdf-file-in-linux/