remover cabecera y pies de pagina

bash file

pdftotext -y 80 -H 650 -W 1000 -nopgbrk -eol unix example.pdf


-y 80   -> crop 80 pixels after the top of file (remove header);
-H 650  -> crop 650 pixels after the -y has cropped (remove footer);
-W 1000 -> hight value to crop nothing (need especify something);