Copy to clipboard
The fastest path to a publishing tool. It puts formatted HTML on the clipboard, so headings, lists, quotes, code and links survive the paste into Substack, Ghost or Medium. Images are not carried; add them in the destination editor.
Markdown
The durable one. A .md file outlives every app that ever opened it, and every static-site generator, notes app and code editor reads it. Exporting needs the File System Access API, which means a Chromium browser; the Markdown page explains the fallback.
For the person who needs to read the piece, not edit it. The PDF keeps a selectable text layer, so a reader can copy a sentence and an editor can comment on it. Light and dark print themes are both available.
EPUB
For a book, a long essay, or anything that should reflow on an e-reader. EPUB export is part of Quorly Pro, and the file is what Kindle accepts through Send to Kindle. The same tier can import EPUB too, so a book can come in, be edited, and go back out.