Saving logo as template will save a lot of time. With a logo template saver, you can add logo in fastest speed once you save it before.
Use a file size reducer - Watermark Software, this will be much easier.
1. Add photos into Watermark Software.
2. Click [Image], [Add Custom Watermark] accordingly and select logo.
3. Click [Save] to store it as a logo template.

In future time, you can simply click the custom template, to add the logo watermark to photos.