dvipng software package provides convert DVI files to PNG graphics, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install dvipng
dvipng is installed in your system.
Make ensure the dvipng package were installed using the commands given below,
$ sudo dpkg-query -l | grep dvipng *
You will get with dvipng package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Utilities |
| Package | dvipng |
| Version | 1.14-1+b1 |
| Description | convert DVI files to PNG graphics |
| Sub Section | Utils |