In PropSpace, your company's logo is extensively used in PDF brochures, Preview Listing pages and HTML-formatted emails. The watermark image is displayed on photos uploaded for listings, to protect from potential theft and misuse of the photos.
Navigate to the Admin > Profile screen, and scroll to the bottom of the page. Here you can upload your company's logo in PNG file format (recommended width less than 700 px).
You can also upload the watermark image in a PNG file form (recommended transparency should be between 10% and 30%, and the width less than 700 px.)