Prompt Engineering FoundationsIterating and formatting outputs · Lesson 6 of 16

Formatting outputs: getting the shape you need

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Formatting outputs: getting the shape you need

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Format is part of the request

A great answer in the wrong shape still creates work. If you need a table for a spreadsheet, a bullet list for a slide, or plain text for WhatsApp, say so. AI assistants can produce almost any text format when asked clearly.

Common formats and how to ask

Bullet points: "Summarise in 5 bullet points, each under 15 words."

Numbered steps: "Give me step-by-step instructions, numbered, one action per step."

Tables: "Put this in a table with columns: Product, Price, Main benefit, Best for."

Email: "Write it as an email with a subject line, greeting, 2 short paragraphs and sign-off."

Headings: "Organise the answer under three headings: Problem, Options, Recommendation."

Plain text: "Plain text only, no bullet points, bold text or headings; I'm pasting it into a text message."

Spreadsheet-ready: "Output as comma-separated values with a header row, so I can paste it into a spreadsheet."

Checklist: "Make it a checklist with tick boxes I can print."

Length control

Be explicit and realistic:

  • "One sentence."
  • "Under 50 words."
  • "About one page."
  • "3 short paragraphs."

AI is better at counting items (bullets, paragraphs) than counting exact words, so use structure-based limits when precision matters.

Tone and reading level

Tone is also format:

  • "Friendly and casual, like a message to a colleague."
  • "Formal, suitable for a government office."
  • "Plain English; explain any technical term in brackets."
  • "Suitable for a reading age of about 12."

Language

You can ask for outputs in any major language, or in two at once:

Write the announcement in English, then the same message in Urdu,
keeping the meaning identical.

For important translations, such as legal notices, medical instructions or contracts, have a fluent human check. AI translation can be very good but can miss nuance or local terms.

Show the format with a template

If you need an exact structure, give a template for the AI to fill:

Fill in this template for each of the 3 suppliers in my notes:

Supplier:
Price per unit:
Delivery time:
Strengths:
Concerns:
Recommendation (Yes/No/Maybe):

This is extremely reliable because there is little room for interpretation.

Worked example: meeting notes to action table

A project coordinator pastes messy meeting notes and asks:

From the notes below, create a table with columns:
Action | Owner | Deadline | Status.
If no deadline was mentioned, write "Not set".
Then, below the table, write a 2-sentence summary for people who
missed the meeting.

NOTES:
---
(paste notes)
---

Notice the instruction for missing information ("Not set"). Without it, the AI may invent a deadline to fill the column. Telling it what to do when information is missing is a simple habit that prevents made-up details.

Formatting for where it will be used

Think about the destination:

  • Slides: short bullets, no long sentences, one idea per bullet.
  • Social media: platform length norms, line breaks, hashtags if appropriate.
  • Voice or video scripts: written for speaking, short sentences, no bullet points or symbols.
  • Emails: subject line, short paragraphs, clear request.
  • Documents: headings, logical sections.

Tell the AI where the text will go: "This will be read aloud in a 30-second video."

Common formatting mistakes

  • Asking for a table but not naming the columns.
  • Not saying what to do with missing information.
  • Forgetting the destination, so text for a chat message arrives full of headings and bold.
  • Expecting exact word counts; check and adjust.

Quick practice

Try asking for the same information in two shapes, for example "a 5-bullet summary for my manager" and "a 3-sentence WhatsApp update for the team". Comparing them side by side trains your eye for which format suits which reader, and you will quickly start specifying format in your very first prompt instead of fixing it afterwards.

Hands-on: one message, three destinations

Paste some real information (a price list, an event plan, your notes) and send this:

Using the information below, produce three versions:

1. A table with columns: Item | Price | Notes. If a price is missing,
   write "TBC".
2. A WhatsApp message under 60 words, plain text, no bold or bullet
   symbols, with line breaks.
3. A 20-second voice-note script, written to be spoken, numbers written
   as words.

INFORMATION:
---
[paste here]
---

Compare the three. You are training yourself to name the destination in your first prompt.

Getting data you can paste into a spreadsheet

For data you will analyse, ask for a format that pastes cleanly:

Extract every order from the emails below into CSV with the header row:
date,customer,product,quantity,amount_gbp
Use ISO dates (YYYY-MM-DD). If a value is missing, leave it empty.
Output only the CSV, nothing before or after it.

"Output only the CSV" stops the assistant adding friendly sentences that break your paste. Many assistants can also create a downloadable spreadsheet or document file directly; if yours can, ask for "a downloadable .xlsx file" and check it opens correctly.

Formatting in right-to-left and mixed languages

If you work in Arabic or Urdu, tell the assistant which language each part should be in and whether you need numerals in Western or Eastern Arabic style. Check the result in the app where it will be used, because right-to-left text can display differently in different apps.

Tone presets you can reuse

Save three tone descriptions that match your real needs and paste them when required:

TONE A (clients): warm, clear, professional; short sentences; no slang.
TONE B (social): friendly, energetic, one emoji maximum, a question at the end.
TONE C (internal): direct, bullet points, decisions and owners first.

How to check format quickly

Before using an output, check the four things that most often go wrong: length, structure (are all the columns or sections there?), missing-information handling (did it invent anything to fill gaps?) and destination fit (does it look right where you will paste it?).

Key takeaways

  • State the format you need: bullets, steps, table columns, email parts, plain text or spreadsheet-ready.
  • Use structure-based length limits (bullets, paragraphs) when precision matters.
  • Give a fill-in template for exact structures, and say what to write when information is missing.
  • Tell the AI where the output will be used: slides, social, voice script, email or document.

Check your understanding

Quick questions to lock in the lesson. They don’t count towards your certificate.

  1. You ask for a table of actions with a Deadline column, but many actions had no deadline. What instruction prevents invented dates?
  2. Which length instruction is the AI most likely to follow precisely?
  3. Text for a 30-second video voiceover should be formatted how?

Put it into practice

Take one piece of information you use often (a price list, notes, a plan) and ask the AI to produce it in three formats: a table, a WhatsApp message and a 30-second script.

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