@djav1985, @Raphael If you want to install and use Webp you can try the following:
This is what I install before installing Hestia as it will enable webp for all php versions that get installed when Hestia installs. Should work with Hestia already installed as well
Note: Versions listed of Webp and ImageMagick are from last time installed and updated install details in my server / vps setup checklist.
I also use Ubuntu 18.04 and install Webp this way, does not break on updates.
Used on Opencart 2.3.0.2 and 3.0.3.1, PHP 7.1 and 7.4 (with webp extension to enable use)
Fix apt is to install packages required by ImageMagick
Fix apt
sudo cp /etc/apt/sources.list /etc/apt/sources.list~
sudo sed -Ei ‘s/^# deb-src /deb-src /’ /etc/apt/sources.list
sudo apt-get update
Then you need to download and extra / Install ImageMagick/Webp
sudo apt-get install build-essential -y
sudo apt-get build-dep imagemagick -y
go to /usr/src/ then
wget http://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-1.1.0.tar.gz
tar xf libwebp-1.1.0.tar.gz
then
wget http://www.imagemagick.org/download/ImageMagick.tar.gz
tar xf ImageMagick.tar.gz
Webp dependancies
sudo apt-get install libjpeg-dev libpng-dev libtiff-dev libgif-dev -y
Compile Webp
cd libwebp-1.1.0
./configure --prefix=/usr
make
sudo make install
cd …
Compile ImageMagick
cd ImageMagick-7.0.9-25. <------ check extracted version folder it was this last time installed
./configure --prefix=/usr
make
sudo make install
cd …
Reboot
or you can try simple version not from source
sudo apt-get install webp libwebp-dev -y