Ubuntu – Simplest process to get ImageMagick 7 with PNG support on Ubuntu

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I've tried to find a simple explanation for several hours but I just can't seem to find anything useful. I'm primarily a Windows programmer with some experience with Linux-based OSes. For some reason doing apt install imagemagick only gives me a really old version (pre-2012) and there's a change in the later versions that I need, which means I need to build from source.

Compiling IM 7 on Ubuntu 18.04 is simple enough: Download tar.gz, extract, ./configure, make and make install. However it seems that PNG support is not included by default (why??).

I've tried doing ./configure --with-png but that didn't achieve anything (I see --with-png=yes no, which presumably means "yes, you've asked for PNG support but no, I haven't given it to you"). I've seen many forum posts and SE questions about this, but everyone asking seems to have some prior knowledge which I am clearly missing and the questions appear to be about some later step in the process.

So, what do I actually need to do to get PNG support?

(And as some bonus questions: Why is there no documentation for this? Why does it not include PNG support out of the box? Why are there no prebuilt binaries for Ubuntu?)

Best Answer

I am not sure what error message you were getting, but I was getting convert: no decode delegate for this image format `JPG' @ error/constitute.c/ReadImage/562 when working with jpegs with a fresh ImageMagick install from source.

To resolve it:

uncomment deb-src http://us.archive.ubuntu.com/ubuntu/ bionic main restricted in /etc/apt/sources.list
install dependencies

sudo apt update
sudo apt build-dep imagemagick

Reinstall ImageMagick

./configure
make
sudo make install
sudo ldconfig /usr/local/lib

source: https://linuxconfig.org/how-to-install-imagemagick-7-on-ubuntu-18-04-linux

Related Solutions

Ubuntu – How to add support for the JPEG image format

I fixed the problem by installing from source the jpeg encoding library available at http://www.ijg.org/files/jpegsrc.v8c.tar.gz.

cd /usr/local/src
tar xvfz jpeg-8c.tar.gz
cd jpeg-8c
./configure --enable-shared --prefix=$CONFIGURE_PREFIX
make
sudo make install

Then I re-installed ImageMagick from source:

cd /usr/local/src
tar xvfz ImageMagick-6.6.9-5.tar.gz
cd ImageMagick-6.6.9-5
export CPPFLAGS=-I/usr/local/include
export LDFLAGS=-L/usr/local/lib
./configure --prefix=/usr/local --disable-static --with-modules --without-perl --without-magick-plus-plus --with-quantum-depth=8 --disable-openmp
make
sudo make install

Now its working, I've tested it like this:

sam@ubuntu:~/RubymineProjects/project/tmp$ identify 1.jpg
1.jpg JPEG 128x106 128x106+0+0 8-bit sRGB 2.22KB 0.000u 0:00.000

ImageMagick – PNG Delegate Install Problems

You are making things a little too hard for yourself, here is a quick and dirty guide that ran well for me on Trusty Tahr:

First pick up a few known dependencies:

sudo apt-get install build-essential checkinstall \
             libx11-dev libxext-dev zlib1g-dev libpng12-dev \
             libjpeg-dev libfreetype6-dev libxml2-dev

This does not quite catch everything so activate the Source repositories by clicking on 'Souce Code' here:

Dash >> Software & Updates >> Source Code

and then running the following:

sudo apt-get build-dep imagemagick

Create a build folder and change to it:

mkdir $HOME/imagemagick_build && cd $HOME/imagemagick_build

And finally download, extract, compile and install by simply copying and pasting the entire code box below into a Terminal window:

wget https://www.imagemagick.org/download/ImageMagick-7.0.8-28.tar.bz2 && \
tar xvf ImageMagick-7.0.8-28.tar.bz2 && cd ImageMagick-7.0.8-28 && ./configure && make && \
sudo checkinstall -D --install=yes --fstrans=no --pakdir "$HOME/imagemagick_build" \
     --pkgname imagemagick --backup=no --deldoc=yes --deldesc=yes --delspec=yes --default \
     --pkgversion "7.0.8-28" && \
make distclean && sudo ldconfig

And finally test this, looking especially for the png you are missing in your own install:

andrew@corinth:~$ identify -version
Version: ImageMagick 7.0.5-10 Q16 x86_64 2017-06-05 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2017 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Features: Cipher DPC OpenMP 
Delegates (built-in): bzlib djvu fftw fontconfig freetype jbig jng jpeg lcms lqr lzma openexr pangocairo png tiff wmf x xml zlib
andrew@corinth:~$

And there is the png option you were missing :).

Best Answer

Related Solutions

Ubuntu – How to add support for the JPEG image format

ImageMagick – PNG Delegate Install Problems

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