Review bookmarklet

For pages you cannot edit. Dragging this to your bookmarks bar and clicking it on a page loads the review layer there on demand.

Review this page

Drag it up to the bookmarks bar — clicking it here does nothing, this page blocks inline scripts on purpose.

If dragging doesn't work

Make a new bookmark by hand (any name).
Paste this as its URL:

javascript:(function(){var w=window;if(w.__ANNOTATE_EMBED__){if(w.Annotate)w.Annotate.open();return}var s=document.createElement('script');s.src='https://annotate.signalwerk.ch/embed.js';s.dataset.login='always';(document.body||document.documentElement).appendChild(s)})()

What it does and doesn't do

The page still has to be on the allowlist — the bookmarklet only loads the script, it grants no access. Comments on a page that isn't listed are refused by the API.

It cannot work on a site whose Content-Security-Policy blocks scripts from https://annotate.signalwerk.ch. Nothing to be done about that from here; use the script tag on sites you control.