Page Comparison

...

Code Block

heroku run bash

mediainfo --version
# Normal output:
# MediaInfo Command line,
# MediaInfoLib - v19.09

convert -version
# Normal output:
# Version: ImageMagick 6.9.10-23 Q16 x86_64 20190101 https://imagemagick.org
# Copyright: © 1999-2019 ImageMagick Studio LLC
# License: https://imagemagick.org/script/license.php
# Features: Cipher DPC Modules OpenMP
# Delegates (built-in): bzlib djvu fftw fontconfig freetype jbig jng jpeg lcms lqr ltdl lzma openexr pangocairo png tiff webp wmf x xml zlib

pdfunite -v
# Normal output:
# pdfunite version 0.86.1

vips --version

# Normal output:
# vips-8.10.6-Tue Mar 23 20:52:58 UTC 2021

vips -l | grep -o '[a-z_]*pdf[a-z_]*'
# Normal output:
# pdfload_base
# pdfload
# pdf
# pdfload_buffer
# pdfload_source

cd tmp

PROFILE=`ls ../vendor/bundle/ruby/*/gems/kithe-*/lib/vendor/icc/sRGB2014.icc`
wget https://digital.sciencehistory.org/downloads/m3zcuho -O b_w.tiff
wget https://digital.sciencehistory.org/downloads/1h16b9n -O color.tiff
wget https://digital.sciencehistory.org/downloads/519ucnx -O normal.pdf

vipsthumbnail  color.tiff  --eprofile $PROFILE
vipsthumbnail  b_w.tiff    --eprofile $PROFILE
vipsthumbnail  normal.pdf

identify *.jpg | grep sRGB

# Normal output (ignore warnings):
# tn_b_w.jpg    JPEG 128x108 128x108+0+0 8-bit sRGB 23603B 0.000u 0:00.000
# tn_color.jpg  JPEG 128x96 128x96+0+0   8-bit sRGB 11880B 0.000u 0:00.000
# tn_normal.jpg JPEG 99x128 99x128+0+0   8-bit sRGB  1619B 0.010u 0:00.000

...

#

Aptfile

Buildpack

Results

1

Code Block
libvips-tools mediainfo imagemagick poppler-utils

Code Block
heroku-community/apt heroku/ruby

vips-8.9.1-Sun Feb 23 08:51:26 UTC 2020

Color TIFFs work

B&W TIFFs do not work

PDFs work

2

Code Block
libvips-tools mediainfo imagemagick poppler-utils

Code Block
heroku-community/apt heroku/ruby

vips-8.9.1-Sun Feb 23 08:51:26 UTC 2020
PDFs work

All TIFFS work

Removing --eprofile srgb_profile_path from the arguments to vipsthumbnail in the code (docs) avoids the error described in issue 942.

3

Code Block
mediainfo imagemagick poppler-utils

Code Block
heroku-community/apt https://github.com/machinio/heroku-buildpack-vips heroku/ruby

vips-8.10.2-Mon Oct 12 16:43:59 UTC 2020

At some point in 2021, vips -l | grep -i pdf started returning blank - no poppler support, so PDFs don’t work.

All TIFFS work

4

Code Block
mediainfo imagemagick libglib2.0-0 libglib2.0-dev libpoppler-glib8

Code Block
heroku-community/apt https://github.com/brandoncc/heroku-buildpack-vips heroku/ruby

vips-8.10.6-Tue Mar 23 20:52:58 UTC 2021

PDFs work

All TIFFS work

...

Versions Compared

Old Version 17

New Version 18

Key