For 18.04 and 20.04 LTS, you can try to follow these steps, which are an extension of Chris Smith's answer:
Step 1
sudo sed -Ei 's/^# deb-src /deb-src /' /etc/apt/sources.list
sudo apt-get update
sudo apt-get install build-essential autoconf libtool git-core
sudo apt-get build-dep imagemagick libmagickcore-dev libde265 libheif
cd /usr/src/
sudo git clone https://github.com/strukturag/libde265.git
sudo git clone https://github.com/strukturag/libheif.git
cd libde265/
sudo ./autogen.sh
sudo ./configure
sudo make
sudo make install
cd /usr/src/libheif/
sudo ./autogen.sh
sudo ./configure
sudo make
sudo make install
cd /usr/src/
sudo wget https://www.imagemagick.org/download/ImageMagick.tar.gz
sudo tar xf ImageMagick.tar.gz
cd ImageMagick-7*
sudo ./configure --with-heic=yes
sudo make
sudo make install
sudo ldconfig
Step 2
sudo apt install php-imagick
cd /usr/src/
wget http://pecl.php.net/get/imagick-3.4.4.tgz
tar -xvzf imagick-3.4.4.tgz
cd imagick-3.4.4/
### If you are using 20.04 LTS, use php7.4-dev below.
apt install php7.4-dev
### If you are using 18.04 LTS, use php7.2-dev below.
apt install php7.2-dev
phpize
./configure
make
make install
sudo phpenmod imagick
Step 3
sudo systemctl restart apache2
php -r 'phpinfo();' | grep HEIC
You should see:
ImageMagick supported formats => 3FR, 3G2, 3GP, A, AAI, AI, ART, ARW, AVI, AVS, B, BGR, BGRA, BGRO, BIE, BMP, BMP2, BMP3, BRF, C, CAL, CALS, CANVAS, CAPTION, CIN, CIP, CLIP, CMYK, CMYKA, CR2, CRW, CUBE, CUR, CUT, DATA, DCM, DCR, DCRAW, DCX, DDS, DFONT, DJVU, DNG, DPX, DXT1, DXT5, EPDF, EPI, EPS, EPS2, EPS3, EPSF, EPSI, EPT, EPT2, EPT3, ERF, EXR, FAX, FILE, FITS, FLV, FRACTAL, FTP, FTS, G, G3, G4, GIF, GIF87, GRADIENT, GRAY, GRAYA, GROUP4, HALD, HDR, HEIC,...
Sample code
<?php
$im = new Imagick();
$im->setSize(1280, 1280);
$im->setFormat('heic');
$im->readImage( DIR . '/tmp/test.jpg' );
$im->cropThumbnailImage( 1280, 1280 );
$im->setImageCompressionQuality(80);
$im->writeImage( DIR . '/tmp/test_1280.heic' );
$im->destroy();
$im = new Imagick();
$im->setSize(1280, 1280);
$im->setFormat('jpg');
$im->readImage( DIR . '/tmp/test.jpg' );
$im->cropThumbnailImage( 1280, 1280 );
$im->setImageCompressionQuality(80);
$im->writeImage( DIR . '/tmp/test_1280.jpg' );
$im->destroy();
?>
Source: 5 minutes to Install Imagemagick with HEIC support on Ubuntu 20.04 (and 18.04) DigitalOcean
