Tool for website / content reviews

What do people tend to use for website reviews with their client?

The projects I've got on the go at the moment, I'm fighting with PDF documents with comments (that don't always show the full comment for some reason), comments on Adobe xd files, comments in Figma and one damn Word document with screenshots.

I know there are some options available, but it's not something I've any experience with.

Does anyone have a recommendation for a website / stakeholder review tool? I'd prefer site agnostic (a drop in JavaScript library, or site that uses iframes, something like that) as projects can span a variety of platforms and languages, some static, some CMS driven.