On this page, you can see a screen shot of the normal version of Text Encoder with graphical user interface. The batch version is working without a graphical user interface.
To convert file into an arbitrary format with the Text Encoder, just drag the files into the list, select an encoding from the left and click on "Encode" after that to change the encoding of all files.
The screenshots have been created with the Clipboard Saver. With this tool you can automatically save screenshots in an arbitrary format and you can concurrently scale the images to your desired size.