How long should a webinar description be?
Fifty to a hundred and twenty words, in one or two short paragraphs. Long enough to name the audience, the outcome and the length; short enough to stay above the agenda on a phone. If it needs more, the extra detail belongs in the agenda chapters or in the answers on the page.
Should the description mention a replay?
Only if you genuinely intend to record and send it, and then as your own doing. Some hosts add a replay link for registrants after the session, alongside links to slides or resources; the platform does not capture or store a recording for you, so an unqualified promise is the wrong way to write it.
Does the description appear in the confirmation email?
The confirmation is where registrants look for the time and their way in, so write the description to survive being reread: the length, the shape, and what happens next. Keep it consistent with the title, since both travel with the registration.
Can the description say who the session is for in a separate panel?
Put that line inside the description text itself. It is the copy guests reliably read, whereas a standalone audience or outcomes panel is not something the page renders for visitors, so the words you write there would reach nobody.
Can I draft the description with AI and still sound like myself?
That is the normal way most hosts work now: describe the session, read what comes back, then rewrite the sentences that sound like marketing. The first draft is for structure โ who, what afterwards, how long โ and your own wording is the part worth protecting.