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linux:multimedia:pdf [2022/07/10 17:41] – created niziaklinux:multimedia:pdf [2024/02/27 09:59] (current) – niziak
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 ===== Software ===== ===== Software =====
   * ''xournal'' - add notes on PDF documents   * ''xournal'' - add notes on PDF documents
 +
 +===== remove password =====
 +
 +<code bash>
 +sudo apt install qpdf
 +qpdf --password-file=- --decrypt encrypted.pdf decrypted.pdf
 +</code>
 +
 +
 +===== attempt to perform an operation not allowed by the security policy =====
 +
 +
 +<code>
 +convert-im6.q16: attempt to perform an operation not allowed by the security policy `PDF' @ error/constitute.c/IsCoderAuthorized/421.
 +</code>
 +
 +Workaround:
 +<code xml /etc/ImageMagick-6/policy.xml>
 +<policy domain="coder" rights="read|write" pattern="PDF" />
 +</code>
 +