Telegram’s Ad Platform uses tight creative limits — a short text body and modest media — and the rules are spread across the platform docs. This reference gathers the working specs for each ad format so your creative passes review the first time.
How it works
Each Telegram ad format maps to a fixed set of constraints: the maximum ad-text length, the media dimensions and aspect ratio, the file-size cap, and any format-specific note. Select a format and the tool surfaces all of those in one panel, plus a short note on the gotcha that most often trips up advertisers (for example, the 160-character text ceiling on sponsored messages).
Specs and tips
The basic sponsored message is text-only at up to 160 characters — write it like a single tight sentence with the call to action up front. Media formats add a 16:9 creative (640×360 px is a safe size) while keeping the same short copy, so let the image or video carry the hook. Keep on-image text minimal: ad creatives render small in-feed, and dense text becomes unreadable. Always confirm the current budget, targeting, and content-policy rules in the Telegram Ad Platform itself, since those change independently of the creative specs.