SiteViewer vs Markup.io
The preview and the feedback in oneMarkup.io
A polished, mature feedback platform. Point it at a live site, a PDF or an image and your client drops comments on top.
SiteViewer
We host the preview itself. Drag in an HTML file, get a private link on your own domain, and the comments are already built in.
Where Markup.io is the better pick
If you need to collect feedback across images, videos and live production sites you do not host, or you want one review hub sitting on top of everything your team ships, Markup is excellent and built for exactly that.