What size should a TikTok in-feed video ad be?

In-feed video ads use the full-screen vertical canvas at 1080 by 1920 pixels, 9:16. Square 1:1 and landscape 16:9 are accepted but appear letterboxed, so vertical is strongly recommended for native, full-bleed creative.

What is the character limit for TikTok ad text?

The ad text caption is typically limited to around 100 characters for most in-feed formats, and emojis are not supported in the ad text. Brand or app display names are shorter, around 20 to 40 characters depending on placement, so keep copy tight.

How long can a TikTok video ad be?

Video ads can run from 5 up to 60 seconds, but TikTok recommends 9 to 15 seconds for the strongest completion and click-through. Longer creative is allowed for some placements such as TopView, which supports up to 60 seconds of full-screen takeover.

What is the maximum file size for a TikTok ad?

In-feed video ads are typically capped at around 500 MB, and image ads at a few hundred kilobytes to a few megabytes. Always export to the recommended codec and bitrate so the file stays well under the cap and uploads cleanly.

What is a Spark Ad and what specs does it use?

A Spark Ad boosts an existing organic TikTok post as an ad, so it inherits that post's native 9:16 dimensions and length. There is no separate creative to size; you only supply the post and the ad text, which follows the standard character limits.

TikTok Ad Spec Reference

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TikTok offers several ad placements, each with its own pixel dimensions, video length, file-size cap, and copy limits. This reference puts every spec for each format in one place so you can build creative that passes review and renders full-screen.

How it works

The tool maps each ad format to its recommended technical spec. The shared foundation is the 9:16 vertical canvas, with formats differing mainly in length and copy rules:

In-feed video = 1080 × 1920 (9:16), 5–60s, ad text ≤ ~100 chars
Spark Ad      = inherits the boosted post's native 9:16 spec
Image ad      = 1080 × 1920 (9:16), static JPG/PNG
Carousel      = multiple 1:1 or 9:16 images sharing one ratio
TopView       = 1080 × 1920 (9:16), up to 60s full-screen takeover

Ad text on most placements is limited to roughly 100 characters and does not support emojis, while the display brand or app name is shorter still, so copy must be deliberately concise.

Tips and notes

Design to 9:16 and respect the UI safe zones — TikTok overlays the profile chip, caption, and CTA button on top of every ad, so keep logos and key text clear of the edges. Aim video length at the 9-to-15-second band for in-feed placements even though 60 seconds is allowed, and keep file sizes well under the cap with an efficient H.264 export so uploads and review go smoothly.