Remove partial slides from latex-beamer pdf presentations.

beamer-pdf-remove-pause-slides.sh

#!/usr/bin/env sh

# This script removes partial slides from a beamer presentation.
# Requirements: pdftk-java (v3.0.9)
USAGE="$0 <input pdf> <output pdf>"

# NOTE: This is based on pdf metadata. If it is not correct some
# pages will be missing!

# How it works
# ------------
# The beamer presentation consists of blocks of pages where we are
# only interested in the last complete page.
# Using pdftk dump_data we can extract PageLabelNewIndex which
# indicate the first page of such blocks.
# The labels start at 0 and there is a 1 appended for some reason.
#
# For example
#   PageLabel starting indices:    0 1 2 - 4 - -
#   Desired complete pages:        1 2 x 4 x x 7
#
# This means we can remove the first index and include the last page.

IN_PDF=$1
OUT_PDF=$2

pdftk $IN_PDF cat $(\
  pdftk $IN_PDF dump_data \
    | grep PageLabelNewIndex `# filter page labels`\
    | cut -d' ' -f2   `# get label value`\
    | sed 's/.$//'    `# remove trailing 1`\
    | tail +2         `# skip first line`\
    | paste -s -d' '  `# paste to one line`\
  ) end  `# add last page`\
  output $OUT_PDF