Aspose.PSD Watermark can add your custom watermark to each layer.
Watermarking of PSD files can be useful if you want to show your PSD to your customers with all layers, but you don't want to give them ability to use PSD file without your permission. It's the some way to lock and save PSD files. You can rasterize all Vector Layers before Watermark, to make your protection of PSD File more efficient. PSD Watermarker supports any custom text as watermark and any image, so you can automatically watermark PSD or PSB Image with your own or company Logo. Opacity and Text of Watermark is customizable