Differences

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--- doc:appunti:prog:pdf [2022/12/07 09:24] – [Raggruppare pagine pari e dispari] niccolo
+++ doc:appunti:prog:pdf [2026/02/06 12:15] (current) – [Creazione PDF da pagine SVG] niccolo
@@ Line 51: / Line 51: @@
 <code>
-convert -density 150 -quality 100 input.pdf output.jpg
+convert -units pixelsperinch -density 150 -quality 100 input.pdf output.jpg
 </code>
@@ Line 57: / Line 57: @@
 <code>
-convert -density 300 -background white -alpha remove -define png:color-type=6 input.pdf output.png
+convert -units pixelsperinch -density 300 \
+    -background white -alpha remove -define png:color-type=6 \
+    input.pdf output.png
 </code>
@@ Line 163: / Line 165: @@
 <code>
-gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=output.pdf -dDetectDuplicateImages=true document.pdf
+gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=output.pdf \
+    -dDetectDuplicateImages=true document.pdf
 </code>
@@ Line 210: / Line 213: @@
 rsvg-convert --format pdf --keep-aspect-ratio --output output.pdf page*.svgz
 </code>
+===== Rimuovere la password di un file PDF =====
+<code>
+pdftk doc-protected.pdf input_pw PROMPT output doc.pdf
+</code>
+Al posto di **PROMPT**, che chiede la password da stdinput, si può indicare la password direttamente sulla riga di comando.