How to Write a YouTube Description and Add Chapters

The description box is one of the most overlooked parts of a YouTube video. It helps viewers decide whether to keep watching, gives context to people who find you through search, and is where chapters live. A few minutes of care here pays off on every upload.

This guide shows what to put in your description, how to structure it, and how to add chapters correctly.

What your description is for

A description has two audiences. The first is a human viewer who wants to know what the video covers and where to find more. The second is search: the words you use help YouTube understand the topic of your video.

Write for the person first. If the description reads naturally and accurately describes the video, it will serve search as well. Repeating keywords again and again helps nobody, and misleading descriptions can break YouTube’s spam and deceptive practices policy, which covers titles, thumbnails, and descriptions that are meant to trick viewers.

A simple structure that works

The first lines matter most

Only the first few lines of a description are visible before a viewer expands the box, and search results may show only a short snippet. Use that space to say plainly what the video is about and who it helps. For example: “In this video, we build a weekly budget in a spreadsheet, step by step, using only free tools.”

Add a short summary

Follow with two or three sentences that expand on the topic, the main steps, or the questions the video answers. Use the natural words a viewer would use when searching for this topic.

Include chapters

If your video is longer than a couple of minutes, add timestamps so viewers can jump to the section they want. More on this below.

Link to useful extras

Add links to resources mentioned in the video, a related playlist, or your next suggested video. Keep links relevant and clearly labeled. If a link is an affiliate or sponsored link, disclose it as required by the rules that apply to you.

Add about and contact details at the end

A one-line description of your channel and a business contact method, if you use one, can sit at the bottom. Do not put anything private in a public description.

How to add chapters

Chapters split your video into labeled sections that show up on the progress bar. They make long videos easier to navigate. According to YouTube Help, you add them by typing a list of timestamps and titles in the description, with these rules:

• The first timestamp must be 00:00.
• You need at least three timestamps, listed in ascending order.
• Each chapter must be at least 10 seconds long.

A simple example looks like this:

00:00 Introduction

00:45 Setting up your sheet

03:10 Adding your categories

06:30 Reviewing the month

YouTube also offers automatic chapters, which you can turn on or off per video or in your upload defaults. Not every video is eligible, and the feature is unavailable in some situations, such as when a channel has active strikes. If you save your own timestamps in the description, they override the automatic ones.

Writing good chapter titles

Chapter titles are tiny headlines, so apply the same rules as for your main title. Keep them short and specific. “Step 2: Add categories” is better than “Next part.” A viewer scanning the list should be able to tell what each section covers without watching it.

Chapters also give you clues about your content. If viewers consistently skip a certain chapter, your retention graph will show a dip at that point. Use that information to tighten future videos, and check our watch hours calculator if you want to see how more viewing time could add up toward a goal.

Descriptions on Shorts and across your channel

Shorts have descriptions too, though they get less attention because the viewing experience is quick. Keep them brief and clear. For your channel as a whole, consider creating a template with your standard links and about line, so you only edit the top section for each new video. Our growth planner can help you build a consistent publishing routine, which makes templates even more useful.

Mistakes to avoid

• Keyword stuffing. Long lists of unrelated terms look spammy and do not help viewers.
• Misleading text. Describe only what is actually in the video.
• Burying the point. A long block of links before the summary hides the most useful information.
• Broken chapters. If the first timestamp is not 00:00, or there are fewer than three, the chapters will not work.
• Copying other people’s descriptions. Write your own, so the text fits your video.

Quick checklist

• First one or two sentences clearly state the topic and who it is for.
• A short, natural summary using the words viewers would search.
• Chapters starting at 00:00, with at least three entries.
• Relevant links, clearly labeled, with any sponsorship disclosed.
• A saved template for your standard links.
• No misleading claims and no keyword stuffing.

Frequently asked questions

How long should a description be?

Long enough to be useful, and no longer. YouTube Studio shows the current character limit, so check it there. A few helpful sentences plus chapters and links is usually plenty.

Why are my chapters not showing?

Check that the first timestamp is 00:00, that you have at least three timestamps in order, and that each chapter lasts at least 10 seconds. It may also take a little time for changes to appear.

Do hashtags in the description help?

YouTube supports hashtags, and a few relevant ones can help organize topics. Keep them accurate and few. There is no need to add a long list.

Can I edit the description after publishing?

Yes. You can improve a description at any time in YouTube Studio, for example by adding chapters, fixing a link, or clarifying the summary.

A good description is clear, honest, and organized: a strong opening, a helpful summary, accurate chapters, and a few relevant links. Build a template, follow the chapter rules from YouTube Help, and spend a few extra minutes on every upload. Over many videos, that habit makes your content easier to find and more pleasant to watch.