Postléfy
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YouTube description generator

Paste your video topic and get an SEO-ready description with a strong opening hook, plus 10-15 suggested tags — copy both in one tap. Free, no sign-up.

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How to use our free YouTube description generator

  1. Type what your video is about, such as “how to start a vegetable garden for beginners”, then press Enter or the button.

  2. Read the description: a strong opening line or two, followed by a few short paragraphs that work your topic's search terms in naturally.

  3. Check the 10–15 suggested tags underneath, written as plain keywords without # signs.

  4. Copy the description and the tags separately, each with one tap, and paste them into YouTube Studio. Add your own links and timestamps — the tool is told not to make them up.

Why video descriptions matter for social media growth

YouTube can't watch your video the way a person does, so it leans on your title, description and other text to understand what it's about. That's the heart of YouTube SEO: a clear description helps your video show up in search and alongside similar videos, and helps viewers decide whether to click.

The opening lines matter most, because they're what shows before someone expands the description. Use them to say what the viewer will get, with your main search phrase early. Below that, add context, links to related videos or your website, and timestamps if the video is long. Write for people first; a description that reads naturally usually serves search well too.

Frequently asked questions

How long can a YouTube description be?

Up to 5,000 characters. Only the first lines show before viewers tap “more”, so put the key point and your main keyword there and keep the rest easy to skim.

Do YouTube tags still matter?

Less than your title, thumbnail and description. YouTube says tags mostly help when your topic is commonly misspelled. They take seconds to add, so add them — but spend your effort on the first lines of the description.

Is the YouTube description generator free?

Yes — free, with no sign-up and no need to connect your channel. It runs on AI, so each visitor has a fair-use limit: make a lot of requests in a minute and it will ask you to wait briefly.

Description handled — now the whole post.

Postlefy writes captions, adds the right hashtags, designs the image and posts everywhere — automatically, on autopilot.

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