Writing narration scripts that sound good

Last reviewed: October 16, 2026

Short answer

A good narration script is written for the ear, not the eye: short sentences, active verbs, one idea per sentence and direct address. It complements the slide rather than reading it out, and it is read aloud before recording so that rhythm, emphasis and the pronunciation of technical terms are right.

Key points

Write for the ear: short sentences, simple word order, verb early in the sentence.
The slide shows, the narrator explains; never say the same thing twice.
Direct address and examples hold attention.
Write abbreviations, numbers and technical terms the way they should be spoken.
Reading aloud is the best test.

Why narration scripts are different

A reader can jump back, slow down or look at a sentence twice. A listener cannot; they have to understand while the sentence passes by. That is why texts that work on paper often work badly when spoken. Long nested sentences, chains of nouns and verbs saved for the end overload working memory.

Good narration scripts are therefore built more simply than written texts, without being simplistic. They carry the same content in a form the ear can process effortlessly.

Rules for spoken language

The following rules turn a reading text into a listening text.

Short sentences: one idea per sentence, rarely more than fifteen to twenty words.
Verb early: “Report the incident immediately” instead of “The incident is to be reported to the responsible office without delay”.
Active, not passive: who does what?
Verbs, not nouns: “when you check” instead of “upon performance of the check”.
Direct address: “you”, consistently throughout the course.
Repetition is allowed: briefly restate key points at the end of a section.
Signpost transitions: “Next we’ll look at …”, “Now it gets practical”.
Round numbers where you can: “just over a third” instead of “34.7 percent”.

Aligning script and slide

The most common mistake with narrated slides: the narrator reads out what is on the slide. That is boring and hinders understanding, because listeners try to read and listen at the same time and get muddled. A better division of labour: the slide shows keywords, a graphic or a figure, and the narrator explains, puts it in context and gives examples.

Coordinate timing. When the narrator talks about the second point, the second point should appear, not all five at once. That guides the eye to what is being discussed. Many tools let you place markers in the script at which the next element of a slide appears.

Writing for synthetic voices

Synthetic voices sound natural today but stumble over certain things. Abbreviations are sometimes spelled out, sometimes read as a word. Numbers with units, dates, section symbols and foreign technical terms do not always sound as intended. Write such passages the way they should be spoken, or maintain a pronunciation list if the tool allows it.

Punctuation controls pauses and emphasis with synthetic voices. A dash creates a short pause, a full stop a longer one. A question mark raises the voice. Listen to every slide once before publishing a course.

In the text	Problem	Better
s. 87(1) no. 6	Symbols are read inconsistently	section 87, subsection 1, number 6
e.g.	Spelled out or swallowed	for example
GDPR	Sometimes a word, sometimes letters	Pronunciation list or spell out once
01/02/2025	Read as a string of numbers, ambiguous	1 February 2025
approx. 30%	Abbreviation and symbol	about 30 percent

Tone and length

A narration script can be friendly and personal without becoming ingratiating. A short opening with a question or an everyday situation draws listeners in. Humour is fine if it suits the topic; with serious subjects such as health and safety or equal treatment, restraint is wiser.

As a rough guide, a narrator speaking at a calm pace says about 120 to 150 words per minute. A slide with 80 words of narration therefore runs for roughly half a minute to just under a minute. If a slide needs much longer, split it.

How Universe does it

In the Universe workshop, every slide has narration that you write yourself or have suggested. Markers in the narration determine when elements of an explainer graphic appear and where the camera moves during a camera path. Stage directions for the delivery can be recorded per slide, and a pronunciation list corrects, word for word, how the voice speaks particular terms. Changing the narration orders a new video for that slide.

Step by step

Define the key message
Write down in one sentence what the slide should convey.
Write a rough draft
Write freely, as if explaining it to a colleague at the table.
Cut and simplify
Split long sentences, turn nouns into verbs, resolve passives.
Align with the slide
Cut what the slide already shows and set markers for elements to appear.
Read aloud or listen
Read the script aloud or listen to the synthetic voice and fix stumbling points.

Terms

Narration script: The text a narrator or synthetic voice speaks for a slide or scene.
Stage direction: A note on tone, pace or emphasis that is not spoken.
Pronunciation list: A list defining how a voice should pronounce certain terms.

Frequently asked questions

How many words of narration fit into a minute?

At a calm pace, about 120 to 150 words. For learning content the slower end makes more sense, because listeners are also taking in the slide.

Should the narrator use a formal or informal tone?

That depends on the organisation’s culture and the audience. What matters is that the tone stays consistent throughout the course.

May the narrator read out the slide text?

Better not. When slide and narrator say the same thing, reading and listening compete. The slide should show keywords or images; the narrator explains.

How do I teach an AI voice the right pronunciation?

Write difficult passages the way they should sound and, if available, use the tool’s pronunciation list, which corrects a term the same way everywhere.

How it works in Universe