Differences

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--- software:pdf [2013/10/22 12:26]
cyril [PDFTK]
+++ software:pdf [2014/09/14 18:57]
cyril [convert (image magick)]
@@ Line 23: / Line 23: @@
   * Encrypt/decrypt, set permissions, repair:
 [[http://www.accesspdf.com/article.php/20041129175231241]]
+===== pdfjam =====
+  * split and merge:<code>
+pdfjam file1.pdf '-' file2.pdf '1,2' file3.pdf '2-' --outfile output.pdf
+</code>
+  * set multiple pages in one:<code>
+pdfjam --nup 2x1 --landscape true --frame false file.pdf
+</code>
+===== sed =====
+  * crop pages (here remove 14% of page height at the bottom):<code>
+sed 's/MediaBox \[0 0 612 1008*/MediaBox \[0 145 612 1008]/g'<in.pdf >out.pdf
+</code>/!\ some tools such as pdftk or gs may consider the file as corrupted afterwards
 ===== convert (image magick) =====
@@ Line 29: / Line 44: @@
 <code>
 convert page-*.png -page A4 [-rotate 90] test.pdf
+convert -density 300x300 test.png test.pdf
+convert -units PixelsPerInch -density 300x300 -extent 2480x3508 -gravity center -background white test.png test.pdf
 </code>
+Convert pdf page into image file at resolution 300dpi:
+<code>
+convert -density 300x300 test.pdf test.png
+</code>
 ===== pdftotext =====