Act on this, mostly signal

Open-source EDIT mode edits a live website in the browser

What to do

Add the script tag and mountEditor to a copy of your site to try in-place editing.

Why

It runs with no server and works on a copy of the page.

What the research found

An open source in-browser visual editor that adds an EDIT mode to a website, runs with no server, and works on a copy of the page; setup is a script tag plus mountEditor for module apps.

Claims and how well the evidence supports them

The editor runs in the browser with no separate server 99%
Edit mode opens at 80 percent zoom by default (initialZoom 0.8) 98%
Setup requires copying in-app-editor.js into the public folder and loading it with a script tag 90%
Options include open, persist, storageKey, initialZoom and onChange 99%

Evidence

github.com https://github.com/janpmz/in-app-editor

Actionability rated medium.