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YouTube description preview
The first lines of your description, next to the video they sit under.
0 / 5,000
Preview
YouTube hides part of a long description behind a control, and we have not measured where. This card folds after 3 lines — that is our line, not YouTube's, so open it to read the rest.
Your images are read by this browser and never uploaded. Nothing is saved.
This YouTube description preview puts your video and its description together. Drop an MP4 or MOV in and paste the description; the card plays the clip muted and renders the text as you type, against the 5,000-character limit.
The description is not a caption, and this page is about the description. The title is a separate 100 characters and is not counted here. Going over on either is a refusal at upload rather than a truncation.
Only the first two or three lines sit above “Show more”, and a search result shows less than that. The card draws no boundary for it — the exact point moves with the layout — so treat the opening lines as the whole description and put any link you want clicked there.
Nothing is uploaded. The clip is read by your own browser and played from memory, so its bytes never leave your machine. A file your own browser cannot decode will not play here, and the description half of the page still works either way.
Questions
How long can a YouTube description be?
5,000 characters, including line breaks, emoji, timestamps and links.
Is the title counted here?
No. The title is a separate 100-character field; this page counts the description.
How much of the description is visible?
Two or three lines before “Show more”, and less in search results. Put the point and any link you want clicked at the top.
Does this tool upload my video?
No. It is read inside your browser and played from memory. Closing the tab discards it.