I built a plugin that scans a WordPress site — pages, menus, custom post types,

page builder, WooCommerce, forms, SEO and caching plugins — and generates a

manual covering only the features that site actually has. It lives in wp-admin,

so the client reads it where they work, and it's written for someone who has

never touched WordPress before.

You can edit any section, reorder or hide the ones that don't apply, and add

your own. There are also "agency notes" that only administrators see. Re-scanning

refreshes the generated sections without overwriting anything you've edited.

Free, GPL, no upsell, no account, and the scan sends nothing anywhere — it all

stays in the site.

https://wordpress.org/plugins/geticed-site-manual/

Fair warning: I haven't used this on a real client handover, so the generated

wording is my best guess at what a non-technical client needs. That's the

feedback I'm after where it's wrong, too generic, or missing something you'd

always include.