gem-plugin-tiff software package provides Graphics Environment for Multimedia - TIFF support, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gem-plugin-tiff
gem-plugin-tiff is installed in your system.
Make ensure the gem-plugin-tiff package were installed using the commands given below,
$ sudo dpkg-query -l | grep gem-plugin-tiff *
You will get with gem-plugin-tiff package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Graphics |
| Package | gem-plugin-tiff |
| Version | 1:0.93.3-10+b2 |
| Description | Graphics Environment for Multimedia - TIFF support |
| Sub Section | Graphics |