To add a watermark to an account with a single domain, add an image file named “watermark.png” to the images folder inside the domain’s main folder.
If there are multiple domains on an account the file must be named “watermark_{NAME}_{DOMAIN_EXTENSION}.png”. For example, https://www.texasrvandhorsetrailer.com/ has two other domains on its account, so the watermark would be named “watermark_texasrvandhorsetrailer_com.png”.
When you have uploaded the new watermark, refresh the unit photo CDN cache. Note that populating the image to all units may take several hours.