A browser extension
The page you are on, as Markdown, without leaving it: press the button in the toolbar and the article comes back without the navigation, the sidebar or the cookie notice. Copy it, download it, or save the page as a self-contained .html file with its pictures inside. The side panel is the same thing kept open beside the page, converting each tab as you arrive at it, and the ten conversions the site has run inside the extension too — nothing is uploaded and none of it needs a network. Signed in, Save and Share put a document on your account and publish a link or name the people who may read it. What it is and what it never does.
The thing that makes this worth installing is not the button. It is that the conversion happens inside the page, where getComputedStyle still exists and the extension can see what a reader sees rather than what the markup says.
What it does that a copy and paste does not
A web page is not a document. Selecting an article and pasting it into an editor brings the menus with it, loses the table structure, and turns every code block into prose. The extension reads the page the way a reader sees it: it finds the article, drops the furniture, keeps the headings, the tables, the lists and the code fences, and puts back the spaces that CSS was holding — a row of stats laid out as flex items serialises as 39words in every other clipper, and arrives here as "39 words".
Selecting part of the page first converts the selection instead of the article, which is the fastest way to lift one table out of a documentation page.
The side panel
The same thing, kept open beside the page. It converts each tab as you arrive at it, so moving through a set of search results means reading the Markdown of each one rather than pressing a button per page. It remembers whether you prefer the panel or the popup.
All ten conversions, offline
The extension carries the site's converters rather than calling it: Markdown to HTML, HTML to Markdown, .docx, .csv, .xlsx, JSON, plain text, a Notion or Confluence export, an Obsidian vault. Nothing is uploaded, nothing needs a network, and none of it depends on an account.
With an account
Signed in, Save puts the document on the account and Share opens the same dialogue the site has: private, anybody with the link, or named addresses who each sign in. The extension asks for no host permissions — it can only read a page at the moment you press the button, which is what activeTab means and why the permission list is as short as it is.
Chrome and Edge install it from the Web Store; Firefox from its own listing.
Related: saving a web page as Markdown, and what a converter should keep from a .docx.