Generators / GEN-03 Runs in your browser
YouTube Description Generator: Chapters, Links and a Reusable Block
Write the part that changes, keep the part that does not, and get a description with working chapter timestamps. The preview marks where YouTube cuts the text off behind the more control.
Builder GEN-03 Limit 5,000 characters
Aim for under 140 characters. Say what the video covers, not that you hope people enjoy it.
Placed high, where it is visible without expanding.
Must start at 0:00, need three or more, each at least ten seconds long.
Plain description. This is the text YouTube matches against searches.
The first three show above the title. Two or three specific ones beat a long row.
- Characters
- 0
- Above the cut
- 0
- Chapters valid
- —
The description is two documents in one field
Every upload needs something specific to that video and something identical across the channel, and most descriptions fail by mixing them. The specific part gets buried under a wall of links; the reusable part gets rewritten slightly differently every time.
Splitting them makes both better. The top section describes this video and carries the one link relevant to it. The bottom section is a block you paste unchanged: newsletter, gear, socials, disclosure. Nothing in the bottom block needs rewriting per video, so it stops competing for the space where attention actually is.
The character counter tracks both the total against the 5,000 limit and how much sits above the cut line. The second number is the one worth watching, because it is the only part most viewers read.
Getting chapters to actually appear
Chapter timestamps are the highest-value thing in the field, and they are the easiest to get subtly wrong. Three rules decide whether YouTube renders them as chapters or as plain text: the list must start at 0:00, it must contain at least three entries, and each chapter must be ten seconds or longer.
Break one and there is no error message. The timestamps become clickable links and nothing else: no scrubber segments, no chapter titles on hover. Plenty of channels have shipped years of videos with timestamps that never became chapters, because the first entry read 0:15.
The validator above checks all three and says which one failed. It also accepts both the 1:24 and 01:24 forms and normalises them, since YouTube is lenient about the format and strict about the rules.
Where links belong, and how many
One link above the cut, the rest below. That is the whole strategy, and it works because a link nobody can see without tapping "more" gets the click-through rate of a link nobody can see.
Below the cut, group them and label them. A reader who has expanded the description is looking for something specific, and a labelled list serves that better than a run of bare addresses.
If a video is sponsored, the disclosure line goes at the top, not in the block at the bottom. The checkbox above places it there. This is separate from the paid-promotion checkbox in the upload form, which you should also tick. The field here is a courtesy to the reader; the form field is what YouTube acts on.
What the text does and does not do for reach
The description gives YouTube language to match against a search, so a plain, honest sentence about what the video covers is worth writing. Two or three natural mentions of the subject is the whole technique.
What it does not do is compensate for anything else. Retention decides how far a video travels, and no arrangement of text in this field changes how long people watch. Treat the description as the thing that helps the right person recognise the video, then spend the remaining effort on the first fifteen seconds.
Questions people ask
How much of the description does a viewer actually see?
Roughly the first 140 characters on desktop and less on mobile, before the text is cut off behind a "more" control. Everything after that is one tap away, and most people never take it.
The tool marks that boundary in the preview so you can see what lands above it. Whatever needs to be read, whether that is what the video covers or the one link that matters, belongs there.
Do timestamps really create chapters?
Yes, when three conditions hold: the first one is 0:00, there are at least three of them, and each chapter runs ten seconds or longer. Miss any of those and YouTube shows plain text instead of a chapter bar.
The tool enforces all three and warns you when the list you have entered would not qualify. Chapters are worth getting right: they appear in the player scrubber and sometimes in search results.
Should I put hashtags in the description?
Two or three specific ones, yes. The first three appear as links above the video title, which is the only place they are visible.
Beyond about fifteen YouTube ignores them all, and a row of generic tags that every video in the category also carries does nothing for anyone. Specific beats numerous.
Do keywords in the description affect ranking?
Modestly, and mostly through relevance rather than repetition. The description gives YouTube text to match against a query, so describing the video in plain language helps.
Repeating a phrase eight times does not. The signal that dominates is whether people who click stay, and no description text changes that.
Is the same description on every video a problem?
The reusable part (links, credits, gear list, disclosure) is fine and expected. The describing part should be specific to the video.
The structure this tool produces separates the two deliberately: a per-video top section, then a fixed block you paste unchanged every time.
Is anything I type sent anywhere?
No. The tool runs in this page and there is no server behind it, so nothing you type is transmitted, logged or stored. Disconnect from the network, reload from cache, and it still works.