Why the first lines matter most
YouTube descriptions can be up to 5,000 characters, but most viewers only see the start. Roughly the first 150 characters appear before someone clicks to expand, and that same opening often shows in search results. Use it to say what the viewer gets from the video, with the main keyword in natural wording.
A description structure that works
- Opening: one or two sentences on the value of the video.
- Summary: a short paragraph on what the video covers and who it is for.
- Chapters: timestamps that let viewers jump to each section.
- Links and next steps: resources mentioned in the video, your newsletter, or a related video or playlist.
- Hashtags: a few relevant tags at the end.
How to add chapters
Chapters split your video into labeled sections on the progress bar. To create them, list timestamps in the description and follow these rules:
- The first timestamp must be 0:00.
- Include at least three timestamps.
- Each chapter must be at least 10 seconds long.
Use clear labels that describe each section, such as "0:45 Monitor riser", not "Part 2".
Hashtags in descriptions
YouTube can show the first few hashtags from your description above the video title. Keep them relevant and few. If you add too many, YouTube ignores them, and misleading tags can break its policies.
Keywords and honesty
Write for people first. Mention the main topic and a related phrase or two naturally, the way you would explain the video to a friend. Long lists of keywords add nothing and can be treated as spam. Make sure every claim in the description matches the video.
Save time with a template
Keep a standard block for your channel links, social profiles and disclosures, such as affiliate links or sponsorships, and paste it under each new description. Then you only need to write the opening, the summary and the chapters for each video.