How to Write a Perfect YouTube Description With Keywords (2024 Guide)
A well-written YouTube description packed with the right keywords can dramatically boost your video's search rankings. Learn the step-by-step formula in this complete guide.

If you want your YouTube videos to be found when people search, your description is one of your most powerful tools — and most creators barely use it.
While your title and thumbnail get the viewer to click, your description works silently in the background, telling YouTube's algorithm exactly what your video is about. The right keywords in the right places can dramatically boost your ranking in both YouTube and Google search.
This complete guide gives you the step-by-step formula for writing descriptions that rank.
The Keyword Research Process
Before writing a single word of your description, you need to know WHAT keywords to include.
Step 1: YouTube Autocomplete
Open YouTube's search bar and start typing your video's topic. The autocomplete suggestions are real search queries made by real users. Write down every relevant suggestion.
For a cooking video about biryani, you might get:
- "chicken biryani recipe"
- "biryani recipe at home"
- "easy biryani recipe for beginners"
- "dum biryani recipe"
These become your primary keyword targets.
Step 2: Related Searches
Search your main keyword on Youtube. Scroll to the bottom. Look for "related searches" or similar videos' titles. These give additional keyword ideas.
Step 3: Competitor Description Research
Use SmartToolsWala's YouTube Description Extractor to extract descriptions from your top 3-5 competitors. Look for:
- Which keyword phrases appear in multiple descriptions?
- What natural language is used around the main keyword?
- What subtopics do they include?
This competitor research reveals which keywords YouTube has already connected to successful videos in your niche.
Step 4: Google "People Also Ask"
Search your main topic on Google. Look for the "People Also Ask" box. These are frequently asked questions about your topic. Including answers to relevant questions in your description adds valuable long-tail keyword coverage.
The Description Formula
Here's the exact formula for a high-ranking YouTube description:
Section 1: The Hook (First 150 characters — Critical!)
The first 150 characters appear in YouTube search results without clicking "show more." This is your description's SEO headline.
Formula: [Main Keyword] + [What They'll Learn] + [Who It's For]
Example:
"In this chicken biryani recipe, I'll show you how to make restaurant-style biryani at home in just 30 minutes — even if you're a complete beginner!"
This 155-character hook:
- Starts with the exact keyword "chicken biryani recipe"
- Promises restaurant quality at home
- Specifies timeframe (30 minutes)
- Targets the right audience (beginners)
Section 2: The Body (200-400 words)
Expand on what the video covers. Write naturally, weaving in keyword variations without forcing them.
Include:
- 2-3 paragraphs covering the main subtopics
- Natural variations of your main keyword
- Questions the video answers (these rank for "People Also Ask")
- Relevant related terms
Example structure:
"Biryani is India's favorite dish, but most people think it's too difficult to make at home. This easy biryani recipe changes that!
In this step-by-step biryani tutorial, I'll show you:
- How to marinade chicken perfectly for biryani
- The secret to cooking basmati rice that's never sticky
- The dum cooking method that gives biryani its incredible aroma
- How to layer biryani the traditional Hyderabadi way"
Section 3: Timestamps (For Videos Over 5 Minutes)
YouTube chapters dramatically improve user experience and show up in Google search results as direct links.
Format:
📌 TIMESTAMPS:
00:00 Introduction
01:30 Marinating the chicken
05:00 Cooking basmati rice
09:30 Layering technique
15:00 Dum cooking method
20:00 Final plating & serving
Section 4: Links and Resources
🔗 RELATED VIDEOS:
→ [Dal Makhani Recipe link]
→ [Pulao Recipe link]
📧 CONTACT:
Website: yourwebsite.com
Instagram: @yourchannel
Section 5: Call to Action + Hashtags
If this recipe helped you, please LIKE this video and SUBSCRIBE for new Indian recipes every Tuesday! 🔔
#biryani #chickenbiryani #indianfood #biryanirecipe #easyrecipe
Keyword Density: How Much is Too Much?
The right keyword frequency keeps your description natural while providing strong SEO signals.
Guidelines:
- Main keyword: Appear 3-4 times naturally (once in first sentence, 2-3 times in body)
- Secondary keywords: 1-2 times each
- Long-tail variations: Once each
Too little: Main keyword appears only once → weak signal Too much: Main keyword every other sentence → looks spammy, potential penalty
Read your description out loud. If it sounds unnatural anywhere, rewrite that section.
LSI Keywords: The Algorithm Secret
LSI (Latent Semantic Indexing) keywords are words and phrases semantically related to your main keyword. YouTube's AI recognizes these as confirming your topic.
For a biryani video, LSI keywords include:
- basmati rice, saffron, cashews, ghee (ingredients)
- dum cooking, layering, marination (techniques)
- Hyderabadi, Lucknowi, Kolkata (regional styles)
- Indian cuisine, Mughlai food (category)
Including natural references to these related terms throughout your description signals to YouTube that your content is comprehensive and authoritative on the topic.
Frequently Asked Questions
How soon after uploading should I add a description?
Add your optimized description BEFORE or immediately when you upload. YouTube starts indexing and analyzing your video as soon as it's published. Having the complete description from the start gives you the best ranking opportunity.
Can I rank for keywords that appear only in my description but not my title?
Yes, but the title is the strongest text ranking signal. Keywords that appear in BOTH the title and description are much more likely to rank than description-only keywords.
How often should I update video descriptions?
Update if: (1) the video is underperforming in search, (2) you want to add chapters you didn't include initially, (3) links or references become outdated. Don't change descriptions on well-ranking videos — you might disrupt what's working.
Conclusion
A keyword-rich, well-structured YouTube description is one of the best free investments you can make in your channel's growth.
The formula:
- 📝 Research keywords with YouTube autocomplete and competitor analysis
- 🎯 Hook with keyword in first 150 characters
- 📖 Body with natural keyword variations (300-400 words)
- ⏱️ Add timestamps for chapters
- 🔗 Include links and call to action
- #️⃣ Add 3-5 relevant hashtags at the end
Use SmartToolsWala's YouTube Description Extractor to research winning descriptions in your niche, then write your own better versions. Do this consistently, and your videos will steadily climb in YouTube and Google search rankings!
Written by
Ankush Prasad
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