The 150 characters that do all the work
YouTube gives you 1,000 characters for the channel description, and then shows almost none of them. In search results, in the channel preview panel, and on mobile before someone taps "more", a viewer sees roughly the first 150 — one or two sentences.
Which makes the standard opener actively expensive. "Hey guys, welcome to my channel!" spends the entire visible portion saying nothing a viewer can decide on. The version that works states the subject and the payoff immediately — Hand-tool woodworking for people without a workshop. Small projects you can finish on a balcony, in under a weekend. — and leaves the personality for the part that only committed readers reach.
What belongs in the remaining 850
- Who it's for, explicitly. Naming the audience does more to convert a browser into a subscriber than any adjective about the content.
- The upload schedule, if you actually keep one. A stated cadence is a reason to subscribe rather than watch once. A stated cadence you miss is worse than none.
- Searchable topic words. The description is indexed for channel-level discovery, so write your subject the way a viewer would type it, not in an internal shorthand.
- Links, at the end, on their own lines. Business email, site, the one other platform that matters. Buried mid-paragraph they get missed.
Channel description vs. video description
Two different fields doing two different jobs, and mixing them up is common. The channel description is written once, lives on your channel page, and sells the channel to someone deciding whether to subscribe. A video description is written per upload, sits under one video, and gives context, links, and chapters for that video.
For the per-video kind, use the YouTube Description Generator — it reads the video's transcript and writes the description from what's actually in it.
Where to paste it
YouTube Studio → Customization → Basic info → Description. Save, and it appears in the About tab of your channel and in the preview card that shows when your channel comes up in search.
FAQ
- What should a YouTube channel description say?
- In one sentence: what someone gets by subscribing. Name the topic in the words a viewer would actually search, say who the channel is for, and add an upload schedule if you keep one. Skip the 'Welcome to my channel!' opener — it spends the most valuable line in the field on nothing.
- How long can a YouTube channel description be?
- 1,000 characters. But only the first ~150 show in search results and on mobile before the 'more' cut, so the opening sentence has to carry the whole pitch on its own.
- Does the channel description affect YouTube search?
- Yes, for channel-level discovery. It's indexed text that helps your channel surface when someone searches your topic, and it feeds the snippet shown next to your channel in results. It doesn't rank individual videos — that's the video's own title, description, and tags.
- Is this different from the video description generator?
- Completely. This writes the channel's About section — the one-per-channel text on your channel page. The video description generator writes the per-video text under a specific upload, from that video's transcript.
- Where do I put the description on YouTube?
- YouTube Studio → Customization → Basic info → Description. It's saved per channel, and it also appears in the About tab on your channel page.