camo software package provides SSL/TLS image proxy to prevent mixed-content warnings, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install camo
camo is installed in your system.
Make ensure the camo package were installed using the commands given below,
$ sudo dpkg-query -l | grep camo *
You will get with camo package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Web Software |
| Package | camo |
| Version | 1.3.0+dfsg-1 |
| Description | SSL/TLS image proxy to prevent mixed-content warnings |
| Sub Section | web |