Free YouTube Description Generator

A description written for your video— and for the search box.

Describe your video. Get an opening line that works in search results, a short body, chapter names in order, the phrases viewers search, and three hashtags. Anything that needs your real details is left in [brackets]. Prefer to fill one in yourself? Use a description template.

Try:

Free, no sign-up. Written by AI for your exact idea — anything in [brackets] is for you to fill with your real numbers or results.

What you'll get
  • An opening line written for search, with its length measured against the cut-off.
  • A short body that says what the video covers and who it's for.
  • Chapter names in order, ready for your real timestamps.
  • Phrases viewers search for this topic, and three hashtags.
How to write a YouTube description

What a description actually does

Most viewers never expand a description. The part that matters is the opening line people see in search and under the video, then the chapters that let them jump to what they came for. The rest helps YouTube understand the video and helps the few who read on.

01

The first line is the one that gets read

Search results and the collapsed description show roughly the first 100–150 characters, depending on the device. Say what the viewer gets, using the words they would search — not a greeting or a sponsor.

Weak

Hey everyone! Thanks so much for watching, in today's video we're going to be talking about something really exciting.

Better

How to bake sourdough without a scale: cup measurements, a simple schedule and the one step beginners skip.

02

Chapters are a feature, not decoration

YouTube builds chapters from timestamps in the description when the list starts at 0:00, has at least three entries, and each chapter runs 10 seconds or more. Named chapters show in the progress bar and can appear in search.

Weak

0:00 Intro · 1:12 Part 1 · 3:40 Part 2

Better

0:00 Why you don't need a scale · 1:12 Measuring flour by cup · 3:40 The overnight schedule

03

Write for the viewer, not the algorithm

Stuffing a list of keywords doesn't help and can count as misleading metadata under YouTube's spam policies. Two or three natural sentences with the phrases people search do the job.

Weak

sourdough, sourdough bread, sourdough recipe, easy sourdough, sourdough for beginners, bread

Better

If you've wanted to try sourdough but don't own a kitchen scale, this recipe uses standard cups from start to finish.

04

Three hashtags, chosen on purpose

The first three hashtags in the description can show above the title. More than 60 and YouTube ignores all of them. Pick three that describe the topic, not your channel's mood.

Weak

#fyp #viral #trending #food #yum #love #instagood

Better

#sourdough #baking #breadrecipe

Rewrites are illustrative examples, not measured results.

Before you publish

  • Does the first sentence make sense on its own, cut off after about 120 characters?
  • Do the chapter timestamps start at 0:00 and match the real video?
  • Is every link, product and claim in it true and current?
  • Three hashtags or fewer, all about the topic?
FAQ

Questions

How long should a YouTube description be?+

YouTube allows up to 5,000 characters, but length isn't the goal. A strong first line, a short paragraph or two about what the video covers, and chapters are enough for most videos.

Do descriptions help YouTube SEO?+

They help YouTube and Google understand what the video is about, especially the opening sentences and chapter names. Title, thumbnail and how viewers respond still matter far more for how widely a video is shown.

Is this description generator free?+

Yes — no account needed, with a small hourly limit so it stays free. It writes for your exact video and marks anything that needs your real details in [brackets].

Why does it leave timestamps as [0:00]?+

It can't watch your video, so it names the chapters and leaves the times for you. Replace each [0:00] with the real start time before publishing — wrong timestamps are worse than none.