I want to add my site name on a large number of images at once. if any one knows please tell me how can i do it.
Create your text the way you want it on the first image. Then open the history panel and select the text tool command, click options > save as command (or click the save button at the bottm right). Name this command something like 'watermark'. You can then use this command in your batch process, so you would click File > Batch Process, select all the files you want, click Next, expand Commands and add the 'watermark' command you created earlier. You can then add the export comand. Hope that helps
History panel?, text tool command? Which software or server script we are talking about? sounds handy, but not idea