Why YouTube descriptions matter for SEO
YouTube descriptions are read by both viewers and the YouTube algorithm. A well-written description with relevant keywords helps YouTube understand your video topic, improving its ranking in search results. The first 125 characters appear in search snippets — what shows below your video in YouTube search results — influencing whether searchers click.
What a great YouTube description includes
Start with your primary keyword and a compelling hook in the first 125 characters. Follow with a paragraph explaining what the video covers. Include timestamps for sections (0:00 Intro, 1:30 Main Topic) — YouTube uses these to show chapter markers which increase engagement. Add a clear call to action. End with relevant hashtags and links to related content.
Hashtags in YouTube descriptions
Adding 3 to 5 hashtags at the end of your description enables them to appear above your video title in search results. YouTube shows up to 3 hashtags prominently. Use specific niche hashtags rather than ultra-broad ones for better targeting. Hashtags in descriptions are separate from tags — both are recommended.
Frequently Asked Questions
How many hashtags should I use? 3 to 5 is optimal. YouTube penalises videos with more than 15 hashtags by ignoring all of them.
Should I include links in the description? Yes. Link to related videos, playlists, your website, and social media profiles. Links in descriptions drive traffic between your content and build overall channel authority.
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