If you create tens of banner images everyday then you can automate the PSD to JPEG creation using Image Processor in Photoshop. You will also need to do this if you are automating text change or translation on banner images in Photoshop using CSV file. To process PSD files. Click on File -> Scripts...

If you own a large website that needs frequent text changes on banners or if you are simply trying to create a banner with multiple text variation on it, then you can use this automated process to ease your work. Also, many large websites that uses multiple languages for different geo locations can use...