1. Watermark Factory (watermarkfactory com) enables you to create single or tiled watermarks, then apply them to a series of photos simultaneously Download the program, Install and run It. Browse to the folder containing the photos you wish to watermark by clicking 'Add folder'

2. We've set the rotation to 315 degrees. By putting the mark at an angle we can use fewer lines of text - allowing the image to be seen easily - while making it hard to crop the watermark out. Select formatting options that suit your own tastes. You can add a shadow and background to the watermark, too.

3. Shift, click or Ctrl, click in the list of thumbnail images to select the pictures that you want to watermark. Click the Watermarks tab to see a list of any saved watermark files. If you've already created and saved a watermark, you can load and reuse it. If you're starting from scratch, click 'Add text' or 'Add image'.

4. On the Text Watermark screen, click 'Fit to Window' to view the first image and 'Sample - Tiled' to select a preset tiled watermark ready for customisation. Type your text into the 'Text settings' pane, then select a font, size and colour. We selected a 72pt Trebuchet font in green and setthe Opacity to 30 percent.

5. Click the '+' symbol in the Presets panel and give your watermark a name, thus creating a template for future use. Click ok, then hit ok again at the bottom of the Text Watermark screen. Back in the main Watermark Factory screen, click the Image Preview tab and then the Options button.

6. In the Options panel, you can resize, sharpen and rename the images, and change their alpha channels. If you want to maintain unmarked versions, be sure to save them under separate filenames. Close Options, select the file format for the watermarked images, then click Generate.