YouTube Description Generator
Build a YouTube description from your video details: summary, chapters, links, and hashtags. Checks chapter rules and length. Free, no signup.
Need help? The Chapters Builder turns an outline into chapters.
A reason to subscribe works better than a bare “like and subscribe”.
Enter what your video is about to see the description.
Before you publish
- Put what the video is about, and who it is for, in the first line. Only the first couple of lines show before “Show more”.
- Write chapters yourself from the video, or paste them from the Chapters Builder. This tool does not guess where your sections start.
- Check that every link works before you publish. Links need the full https:// address to be clickable.
- Write something different for each video. Reusing one description for every upload gives viewers and search engines nothing to tell them apart.
Related Tools
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Tag Generator
Get YouTube tag ideas from your topic. Choose the tags to keep, add your own, and check the 500-character limit. Free, no signup.
Chapters Builder
Check your YouTube chapter timestamps against YouTube’s rules, fix problems line by line, and copy a clean list for your description. Free, no signup.
About the Video Description Generator
?What the description generator does
You fill in what you know about the video: an opening sentence, key points, chapters, links, a closing line, and hashtags. The tool assembles them into a description in a fixed order, and leaves out any section you did not fill in.
It does not invent chapters, links, or ratings, and it does not use YouTube data or a language model. If you leave the opening sentence empty, it writes a plain default from your topic that you should replace with your own.
It also checks the text against YouTube’s rules: the 5,000-character limit, the chapter requirements, the hashtag count, and characters YouTube does not allow. Everything runs in your browser.
→How to build a description in 5 steps
Enter the topic and choose a video type
The type changes the heading above your key points, for example “What you will learn” for a tutorial or “What I cover” for a review.
Write the opening sentence
Say what the video is and who it is for. This is the part most viewers see before “Show more”.
Add key points, chapters, and links
One per line. Start each chapter with its time. Put the most important link first.
Add a closing line and hashtags
Give a reason to subscribe, and choose a few hashtags. The first three appear above the video title.
Read the checks, then copy
Fix anything the checks flag. Copy the text and paste it into YouTube Studio.
✓What is in the tool
Only what you provide
Empty sections are left out, so there are no placeholders or invented chapters.
Chapter checks
Flags a first chapter that is not 0:00, fewer than three chapters, chapters shorter than 10 seconds, and times out of order.
First-lines preview
Shows roughly what viewers see before “Show more”.
Limit and character checks
Counts characters against the 5,000 limit and warns about the < and > characters.
Hashtag help
Suggests a hashtag from your topic, cleans up what you type, and warns above 15.
Live result
The description updates as you type, and one button copies it.
★Examples
A full description, start to finish
A description template for a tutorial video: the tool puts what you typed in this order, and leaves out anything you did not fill in.
Example:
Topic “healthy meal prep”, type Tutorial, with an opening sentence, three key points, four chapters, one link, a closing line, and two hashtags gives: “A simple Sunday routine for cooking a week of healthy lunches in about two hours, for beginners. / What you will learn: Plan the week, Batch cook grains, Store it safely / Chapters: 0:00 Intro, 1:30 Planning, 4:45 Batch cooking, 9:10 Storing / Links: Shopping list: https://example.com/list / Subscribe for a new recipe every Friday. / #mealprep #healthyeating”. Each part sits on its own lines in the real result.
A product review with no other details
Only the topic is filled in, so the result is a single opening line you can then build on.
Example:
Topic “iPhone 16 review” with the Review type gives “In this review, I look at iPhone 16.”
A how-to video
A topic that starts with “how to” gets an opening line that fits.
Example:
Topic “how to cook pasta” gives “In this video, I show you how to cook pasta.”
Checking chapters before you publish
Paste your chapter list and read the checks.
Example:
A list that starts at 0:05, or has only two chapters, is flagged because YouTube would not show it as chapters.
♥Limits to know about
It structures your text, it does not write it
The quality of the description depends on the sentences, points, and chapters you provide.
No ranking promise
A well-formed description helps viewers. No tool can promise it changes where a video ranks.
Chapters come from you
The tool does not know where your sections start. Use your editor timeline, or the Chapters Builder.