UtilibyWritten by the Utiliby editorial team · Last updated October 17, 2026 · Rules and formulas reviewed October 2026
What a YouTube description generator does
The description is the text under your video. It holds your summary, chapters, links and hashtags, and it tells both viewers and search engines what the video is about. Most creators know that it matters, but few write it with a plan, so they paste the same block every time or leave it nearly empty. A YouTube description generator gives you the plan. You fill in the details once, and the tool arranges them in a proven order and tests the result.
This free online tool goes beyond filling in a template. It counts characters against the 5,000 limit, shows a preview of what appears before the Show more link, checks that your main keyword is in the opening lines, validates your chapter list, warns about too many hashtags, flags broken links and reminds you about disclosures. Everything runs in your browser, with no sign-up and no upload.
How to use the description generator
- Fill in the video details. Enter the title, your main keyword and a layout that suits the video type.
- Write the opening. One or two sentences that state what the viewer will get. Leave it empty if you want a suggestion to start from.
- Add summary points. One per line, written with the words people search for.
- Add chapters, links and extras. Paste your timestamps, link lines in the form Label | URL, social links, a disclosure and hashtags.
- Read the checks. Fix any red item and review the amber ones.
- Copy and paste. Put the text into the description in YouTube Studio.
The limits that matter: 5,000 characters, the fold and 15 hashtags
Three numbers shape every description. The first is the total length: 5,000 characters. Few descriptions need that much, but long chapter lists and link lists can add up. The second is the fold. On the watch page, only the first part of the description is visible until a viewer taps Show more. Guides put this at roughly 157 characters, and it varies by device, so treat it as a planning figure. The third is the hashtag rule: you can use up to 15, and if you add more than 15, YouTube ignores all of them. The first three hashtags in the description also appear above the video title.
| Item | Limit or behaviour | What to do |
|---|---|---|
| Total length | 5,000 characters | Keep it useful, not padded |
| Visible before Show more | About 157 characters (varies) | Put the keyword and promise first |
| Hashtags | 15 maximum, all ignored above that | Use one to three relevant ones |
| Chapters | 00:00 first, three or more, 10 seconds each | Check with the chapter tool |
| Links | Start with https:// or www. | One link per line |
Writing the first lines
The opening is the most valuable text you write. It is what a viewer reads before deciding whether to expand the box, and it is the part search engines and suggested snippets are most likely to use. Start with the main keyword in a natural sentence, then state the benefit. Compare Hi everyone, welcome back to my channel with Learn how to meal prep for the week in under two hours, with a shopping list and storage tips. The second version says what the video is and why to watch it, and it carries the keyword within the first characters.
- Lead with the topic. Not with greetings or links.
- Promise something specific. A number, a result or a time saved.
- Keep it honest. Match the title and the video.
- Avoid repeating the title word for word. Add new detail.
Choosing a layout for your video type
Viewers learn where to look when descriptions follow a pattern. The layout menu changes the section headings so the text fits the video.
| Video type | Section order |
|---|---|
| Tutorial | Hook, call to action, In this video, Chapters, Resources and links, Follow |
| Review | Hook, What I cover, Chapters, Products and links, Connect |
| Vlog | Hook, About this video, Moments, Links, Find me |
| Podcast | Summary, Topics discussed, Timestamps, Guest and links, Follow the show |
Keep headings short and plain. Fancy symbols look cluttered on phones and add characters.
Keywords and SEO without stuffing
Search starts with words. Before you write, find the phrase a viewer would type. Type your topic into the YouTube search box and note the suggestions, check the titles of videos that rank, and look at the search terms report in YouTube Studio for your own channel. Choose one main keyword and two or three related phrases. Use the main keyword in the title, in the first sentence of the description and once or twice more in the summary. Use related phrases naturally in the summary points.
Do not repeat the keyword in every line or add a block of unrelated terms. That reads as spam to viewers, and YouTube's policies on spam and deceptive practices cover misleading metadata. A clear, useful description that matches the video will do more for you than a long list of words.
Hashtags in descriptions
A hashtag turns a word into a link to a page of videos on that topic. If you place hashtags in the description, the first three appear above your title. Pick words that describe the video, such as #mealprep, and avoid unrelated popular tags. Use no spaces inside a hashtag, and keep them short. Remember the limit of 15: past that number, YouTube ignores every hashtag on the video. The tool strips spaces and punctuation, removes duplicates and warns when you cross the limit.
Links, social profiles and affiliate disclosure
Place links after the opening, summary and chapters, so that they do not push your keywords out of the visible part. Give each link a label and put it on its own line. Link to the resource you mention in the video, a related video, your playlist, your newsletter and your main social profile. A short, specific label such as Free shopping list beats a bare URL.
If a link earns you money, say so. Many countries expect clear disclosure of affiliate links and paid promotions, and platforms have their own rules. The tool offers standard disclosure sentences for affiliate links, paid promotions and free products. For a paid promotion, YouTube Studio also has a setting that you should switch on. These sentences are general, so check the requirements that apply where you and your audience live.
A complete example
Here is the structure the tool builds for a meal prep tutorial. The opening carries the keyword and the promise. The summary points are specific. The chapters start at 00:00. The links have labels, the disclosure sits after the links and the hashtags close the text.
| Part | Example |
|---|---|
| Hook | Learn how to meal prep for the week in under two hours, with a simple plan and storage tips. |
| Call to action | Subscribe for a new recipe video every week. |
| Summary | A beginner-friendly plan, a one-page shopping list, how long food keeps |
| Chapters | 00:00 Intro, 01:12 Plan the week, 03:45 Shop and prep |
| Links | Free shopping list, Kitchen gear |
| Hashtags | #mealprep #healthyeating #beginners |
Common description mistakes
- Links first. They fill the visible part with URLs and hide your keywords.
- Copy and paste. The same text on every video says nothing specific.
- Too many hashtags. More than 15 means all are ignored.
- Chapters that do not start at 00:00. The list will not work.
- No disclosure. Affiliate and paid content should be labelled.
- Misleading text. Promising what the video does not deliver harms trust and may break policy.
- Never updating. Dead links frustrate viewers.
Privacy, accuracy and responsible use
The generator runs in your browser and does not store or send your text. It is a drafting aid: it cannot see your video, so you must make sure that the description is true. Limits and display behaviour come from YouTube's help pages and creator guides, and they can change. Check the final text in YouTube Studio before you publish.
Related free YouTube tools
Use these free online tools together with this one:
- Build and validate the chapter list for your description with the YouTube timestamp generator.
- Add hidden tags and hashtag ideas with the YouTube tag generator.
- Write a title that matches your description with the YouTube title generator.
- Check limits on other platforms with the social media character limits checker.
Frequently asked questions
What is a YouTube description generator?
A tool that assembles a complete video description from the details you give it: an opening, summary points, chapters, links, a disclosure and hashtags. This one also checks the length and previews what shows before Show more.
How do I write a good YouTube description?
Put the main keyword and the promise of the video in the first one or two sentences, add a short summary, list chapters, add useful links, include any required disclosure and finish with one to three hashtags.
What is the YouTube description character limit?
5,000 characters. The counter in this tool shows how many you have used and warns you if you go over.
How much of the description is shown before Show more?
Roughly the first 157 characters on the watch page, though the exact amount varies by device and screen width. The preview marks that point so you can keep the important words above it.
How many hashtags can I use in a YouTube description?
Up to 15. If a video has more than 15, YouTube ignores all of them. The first three hashtags in the description appear above the video title.
Should I put keywords in the YouTube description?
Yes, naturally. Use your main keyword in the first sentence and related phrases in the summary points. Do not stuff keywords, because that reads badly and can break YouTube's spam policies.
Does the description affect YouTube SEO?
It gives YouTube and search engines context about the video, so it helps, but it is only one signal alongside the title, thumbnail, content and viewer behaviour.
How do I add timestamps to my description?
Type them in the Chapters box, one per line, with 00:00 first. The tool checks the rules (three or more, ascending, 10 seconds minimum). The YouTube timestamp generator on this site can build the list for you.
Do I need to disclose affiliate links?
In many places the law and platform rules expect clear disclosure of affiliate links and paid promotions. Choose a disclosure line in the tool, and read your local rules. For paid promotions, YouTube Studio also has a setting you should tick.
Can I use the same description for every video?
Reuse the links and social lines, but write a new opening and summary for each video. Identical descriptions give viewers and search engines nothing specific.
What are the best layouts for different video types?
Tutorials benefit from a step list and resources, reviews from a product list and links, vlogs from a short story and moments, and podcasts from topics and guest details. The layout menu changes the section headings.
Can I use emojis or special characters?
Plain text is safest. Emojis work but add length and can distract. YouTube may reject angle brackets (< and >) in descriptions, so the checker flags them.
Why are my links not clickable?
Links need to start with https:// or www. so that YouTube recognises them. Each should be on its own line. The checker warns about links without a proper start.
Can I write a description for Shorts?
Yes. Shorts have a description too, but it is less prominent. Use the opening sentence and two or three hashtags, and skip chapters.
Is my text stored or uploaded?
No. The tool works entirely in your browser and does not send your text anywhere.
Is this description generator free?
Yes. It is free to use online with no sign-up. You can copy the text, download it as a .txt file or print a summary.
How often should I update a description?
Update it when links change, when you add a new related video or when a section needs a correction. Old videos that still get views are worth a quick review.
Sources and further reading
- YouTube Help, Add or edit video details in YouTube Studio.
- YouTube Help, Video chapters.
- YouTube Help, Use hashtags on your videos and Shorts.
- Google Search Central, Video best practices.
Sources were consulted in October 2026. Standards and rules can change, so always check the official page for your situation.