Fold.

It prepares a post before you publish it. Fold combines bold and italic formatting with a phone and desktop preview, character counts, spacing fixes and a note on your opening line. You copy the finished text into LinkedIn yourself.

There is no dependable single number. The width of the feed, the letters you use, your own line breaks, and the reader's text size or display scaling all change how much fits, which is why Fold measures rendered lines rather than counting characters. Both were measured against real posts in the feed on 16 Sep 2026: the phone to within about 6 characters, and the desktop to within about 12 characters. LinkedIn changes its layout without announcing it, so a date that has aged is a reason to measure again rather than a promise that still holds.

Select a word or phrase in the editor, then choose Bold, Italic or BI. Fold swaps the letters for mathematical Unicode characters, which most fonts draw in bold or italic. Aa Plain removes the formatting from a selection, and Copy plain gives you a plain version of the whole post.

Not reliably. They are maths characters wearing a costume, not letters: a screen reader may announce them as symbols, read them oddly or skip them, and LinkedIn's own search will not match them. Keep the meaning in plain words, use the styling sparingly, and take the plain copy when accessibility matters.

The LinkedIn copy strips leading spaces and closes up runs of blank lines. To hold a deliberate empty line, put the cursor on it and press Break, which inserts an invisible character so the line is not empty. Check the result in LinkedIn before posting, because platform behaviour changes.

It never publishes: Fold does not connect to LinkedIn, schedule, or touch your account. Writing is your choice, one press at a time. Three other first lines moves sentences you already wrote to the front using local rules, and nothing leaves the browser. Underneath it, a second button sends your draft to Anthropic's API and has a model write three new openings - that one does write for you, and only when you press it.

Editing, the fold measurement and the formatting all happen in your browser, and no draft is stored on a server. Two things can send it further, both only if you choose them: Share proof puts the whole draft inside the link, so anyone holding that link can read it; and the second suggestions button sends the draft to Anthropic's API. The privacy page sets out what each one means, including what Anthropic's terms do and do not promise.

Our preference is the body, where readers can find it. That is a usability view, not a claim about LinkedIn's ranking or a promise of better reach.