What to write in a YouTube video description

Write a YouTube description that helps your video rank and gets viewers to watch, subscribe, and click. Fill in your details below, copy the prompt, and paste it into ChatGPT, Claude, or Gemini.

YouTube descriptions written as afterthoughts miss a significant opportunity. The first 100 to 150 characters are what Google indexes and what viewers see before clicking "show more," and most creators write those characters with very little intention.

A well-written YouTube description opens with a hook that makes the viewer want to watch, covers the main points with keywords woven in naturally, and ends with a clear call to action. It functions as both a viewer-facing summary and an SEO document that helps the video rank for the right searches.

Enter your video title and topic, the main points covered, your target audience, and your call to action. The AI gives you a description that works for both viewers and search, without keyword-stuffing that looks unnatural.

Fill in your details

Your prompt

Help me write a YouTube video description. Here are the details:

Video title and topic: [TOPIC]
Main points covered in the video: [CONTENT]
Target audience: [AUDIENCE]
Call to action I want to include (subscribe, link, etc.): [CTA]

Write a YouTube description that hooks viewers in the first 2 sentences (what shows before "Show more"), covers the main topics naturally with relevant keywords, and ends with a clear call to action. 150 to 300 words total.

Copy this prompt and paste it into ChatGPT, Claude, Gemini, or any AI tool.

Tips for writing this

  • 1The first 2 to 3 sentences are the most important — they show before "Show more" and directly impact click-through.
  • 2Include your main keyword naturally in the first sentence.
  • 3Add timestamps if your video is over 5 minutes. It helps viewers and helps with search.

Common questions

How long should a YouTube video description be?+

Between 150 and 300 words for most videos. The first 100 characters are the most important for search and display. Longer descriptions with keywords can help rank but quality matters more than length.

How do I use this prompt?+

Fill in your details using the form above. The placeholders in the prompt update live as you type. When you are ready, click “Copy prompt” and paste it into ChatGPT, Claude, Gemini, or any AI tool. The AI will write something personalized to your specific situation.

Which AI tool works best for this?+

Claude and ChatGPT both work well. Claude tends to produce more natural, nuanced writing for personal situations. ChatGPT is strong for structured business and professional writing. Try both and keep the version that sounds more like you.

Should I use the AI output word for word?+

Use it as a strong first draft, then edit it to sound like you. The AI gives you the structure and language to work from. Reading it out loud is one of the best ways to catch anything that does not feel natural in your voice.