Turn a Thread or Newsletter Into a Carousel in 10 Minutes

A thread or a newsletter issue becomes a carousel by keeping its structure and cutting its words: the first line becomes the hook, each paragraph or tweet becomes one slide with a title and one or two sentences, one number becomes a stat slide, and the sign-off becomes the close. It takes ten minutes when the source is already an argument, which most threads and newsletters are. Here is the slide map, what to cut, and a prompt that does the conversion in Claude with the images rendered in the same reply.

Why repurpose into a carousel at all?

Because the thinking is done. A newsletter issue that took two hours to write contains a hook, an argument and a conclusion; turning it into eight slides is editing, not writing. The carousel reaches the people who do not open email and do not read threads, and it gets saved, which a thread rarely does. One idea, three formats, three audiences; carousel vs single image vs Reel covers which format serves which goal.

The slide map

Source	Becomes	Notes
First tweet or subject line	Hook slide	Rewrite as a claim or a number under ten words
Each tweet or paragraph with one idea	Text slide	Title: the idea in five words. Body: one or two sentences
A paragraph that lists things	List slide	Three to five items, one line each
Any specific number	Stat slide	The number large, one line of context
A quote you cited	Quote slide	Under 200 characters, with the author
The sign-off, PS, or “reply and tell me”	Close (cta)	One ask: save, share or follow, plus your handle

A twelve-tweet thread usually maps to eight to ten slides; a 900-word newsletter to six to nine. If the map produces more than twelve, the source had two arguments, and that is two carousels.

What to cut

• Transitions. “Now, the second thing I want to talk about” is a slide title: “The second thing”.
• Context the hook already gives. Once the hook says “3 pricing mistakes”, slide two does not need to explain that pricing is hard.
• Examples that need a paragraph. Keep the one-line version on the slide; the long version goes in the caption.
• Links and asides. Slides cannot hold links. Put them in the caption or the post body on LinkedIn.
• Your voice tics. “Honestly”, “I think”, “to be fair” cost characters and add nothing at 36 pixels. How much text fits on a slide has the limits that make this cutting necessary.

What to keep

• The order. The source was written in the order that convinced its readers. Reorder only to move the strongest proof next to the claim it supports.
• One real number. Threads tend to contain one; make sure it survives as a stat slide, because it is the slide people screenshot.
• The ask. If the newsletter ended with “hit reply”, the carousel ends with “comment”, the same request in the network’s native form; the last slide of a carousel has the phrasing.

The prompt

With Karou connected, paste the thread or the issue into Claude or ChatGPT and say:

Turn this into a carousel with Karou. Hook slide from the first line (give me three options first), one text or list slide per idea in the same order, one stat slide for the number in paragraph 4, and a cta slide asking people to save it. Keep every title under 10 words and every body under two sentences. Use the clean template, 4:5.

The AI maps the text to slide types, asks you to pick a hook, calls create, and the thumbnails come back with a ZIP of PNGs and a PDF. If slide five came out as two ideas, say “split slide 5 into two” and it calls edit on the same carousel. The full writing shape is in how to make a carousel with Claude.

A worked example

Source, a five-tweet thread:

1. “I priced my first ebook at $7. Big mistake. Here’s what I learned.”
2. “Mistake 1: I priced for strangers. The people who bought already trusted me.”
3. “Mistake 2: I compared against the whole market instead of my own readers.”
4. “Mistake 3: I thought cheap would sell more. It sold the same number, for less.”
5. “Now I start at $29 and raise it every 50 sales. Revenue per launch went up 4.2x. Save this for your next launch.”

Slides:

1. Hook: “I priced my first ebook at $7. Mistake.” Subtitle: “Three errors that cost me a year.”
2. Text: “Mistake 01: Pricing for strangers.” Body: “The people who bought already trusted me and would have paid more.”
3. Text: “Mistake 02: Comparing with the market.” Body: “My readers were the market. I never asked them.”
4. Text: “Mistake 03: Assuming cheap sells more.” Body: “Same number of copies, a fifth of the revenue.”
5. List: “What I’d do now.” Items: “Start at $29”, “Raise every 50 sales”, “Add one bonus, not five”.
6. Stat: “4.2x” Label: “revenue per launch after the price went from $7 to $29.”
7. Close: “Save this for your next launch.” Text: “One pricing lesson a week.” Handle.

Ten minutes, and the thread is now a carousel that will be saved by people who never saw the thread.

FAQ

Can I go the other way, carousel to thread?

Yes: each slide’s title and body is a tweet, the hook is the first tweet, the close is the last. It is the same map backwards.

Should the carousel link to the newsletter?

In the caption or bio. The carousel itself should be complete; a carousel that is an ad for the newsletter gets fewer saves than one that delivers the idea.

How often can I repurpose?

Every issue, if the issues are arguments. Round-ups and link lists convert badly; they become list slides with no hook.

What if the newsletter has three ideas?

Three carousels, one a week. That is a month of content from one issue.