WKHTMLTOPDF Installation error on Ubuntu

For those trying this now, the download.gna.org url no longer works, but the previous answers are still valid: I just had to install using the new location like so:

wget https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.4/wkhtmltox-0.12.4_linux-generic-amd64.tar.xz
tar xvJf wkhtmltox-0.12.4_linux-generic-amd64.tar.xz 
sudo cp wkhtmltox/bin/wkhtmlto* /usr/bin/

Just did this on an Ubuntu 16.04.2 machine. Thanks for the original answer, Rasikh!

As I cant comment, here is the new Point 3 for the correct answer for Ubuntu 64 Bit. Thanks for the help @Rasikh Mashhadi

wget http://download.gna.org/wkhtmltopdf/0.12/0.12.4/wkhtmltox-0.12.4_linux-generic-amd64.tar.xz
tar xvJf wkhtmltox-0.12.4_linux-generic-amd64.tar.xz
sudo cp wkhtmltox/bin/wkhtmlto* /usr/bin/

In case anybody is having the similar issue, I got it fixed by following this article.

All features are working perfectly now.

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Article contents:

The wkhtmltopdf shell utility is used to generate PDF documents from HTML using WebKit. I’ve tried a few ruby gem wrappers that make use of wkhtmltopdf, but I’ve found that I like using the wicked_pdf gem the best. Regardless of what wrapper you use to call wkhtmltopdf, here are the steps to get wkhtmltopdf installed on Ubuntu (minor adjustments will be needed for non Debian based distributions).

1. Remove wkhtmltopdf installed using apt-get previously (if previously installed).

    sudo apt-get remove --purge wkhtmltopdf
   

2. Install dependencies.

    sudo apt-get install openssl build-essential xorg libssl-dev
   

3. Download the static binary as per the architecture (i386/amd64). Extract it, change the owner and then copy it to /usr/local/bin.

    wget http://wkhtmltopdf.googlecode.com/files/wkhtmltopdf-0.9.9-static-i386.tar.bz2
    tar xvjf wkhtmltopdf-0.9.9-static-i386.tar.bz2
    sudo chown root:root wkhtmltopdf-i386
    sudo cp wkhtmltopdf-i386 /usr/local/bin/wkhtmltopdf
   

For amd64 bit

wget https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.4/wkhtmltox-0.12.4_linux-generic-amd64.tar.xz
tar xvJf wkhtmltox-0.12.4_linux-generic-amd64.tar.xz 
sudo cp wkhtmltox/bin/wkhtmlto* /usr/bin/