PDFTK es un potente programita hecho con Java que permite eliminar o añadir páginas de un PDF, juntar páginas de distintos documentos PDF en uno solo, todo con sencillos comandos. Útil, rápido y muy potente. Para instalarlo basta invocar apt-get install pdftk. A continuación algunos comandos sacados de la página de PDF Toolkit.
Merge Two or More PDFs into a New Document
pdftk 1.pdf 2.pdf 3.pdf cat output 123.pdf
or (Using Handles):
pdftk A=1.pdf B=2.pdf cat A B output 12.pdf
or (Using Wildcards):
pdftk *.pdf cat output combined.pdf
Split Select Pages from Multiple PDFs into a New Document
pdftk A=one.pdf B=two.pdf cat A1-7 B1-5 A8 output combined.pdf
Rotate the First Page of a PDF to 90 Degrees Clockwise
pdftk in.pdf cat 1E 2-end output out.pdf
Rotate an Entire PDF Document’s Pages to 180 Degrees
pdftk in.pdf cat 1-endS output out.pdf
Encrypt a PDF using 128-Bit Strength (the Default) and Withhold All Permissions (the Default)
pdftk mydoc.pdf output mydoc.128.pdf owner_pw foopass
Same as Above, Except a Password is Required to Open the PDF
pdftk mydoc.pdf output mydoc.128.pdf owner_pw foo user_pw baz
Same as Above, Except Printing is Allowed (after the PDF is Open)
pdftk mydoc.pdf output mydoc.128.pdf owner_pw foo user_pw baz allow printing
Decrypt a PDF
pdftk secured.pdf input_pw foopass output unsecured.pdf
Join Two Files, One of Which is Encrypted (the Output is Not Encrypted)
pdftk A=secured.pdf mydoc.pdf input_pw A=foopass cat output combined.pdf
Uncompress PDF Page Streams for Editing the PDF Code in a Text Editor
pdftk mydoc.pdf output mydoc.clear.pdf uncompress
Repair a PDF’s Corrupted XREF Table and Stream Lengths (If Possible)
pdftk broken.pdf output fixed.pdf
Burst a Single PDF Document into Single Pages and Report its Data to doc_data.txt
pdftk mydoc.pdf burst
Report on PDF Document Metadata, Bookmarks and Page Labels
pdftk mydoc.pdf dump_data output report.txt