Spec log
Rev 2026-10-21 / Performance Max: image, logo and video specs added from Google Ads Help / TikTok: Spark Ads captions show up to 4 lines / Google Display moving to Demand Gen from June 2026 / Meta Feed, Stories, Reels: still unverified / Every spec links to official docs / Rev 2026-10-21 / Performance Max: image, logo and video specs added from Google Ads Help / TikTok: Spark Ads captions show up to 4 lines / Google Display moving to Demand Gen from June 2026 / Meta Feed, Stories, Reels: still unverified / Every spec links to official docs /
Ad Spec SheetRev 2026-10-21Get an ad audit
Sheet 07Section TIKTOKRev 2026-10-21

TikTok In-Feed ads (non-Spark)

Quick answer: TikTok non-Spark In-Feed video ads should be 9:16 at 540 x 960 or larger (16:9 and 1:1 also accepted), up to 10 minutes long, 500 MB or less, with a bitrate of 516 kbps or more.

OrientationRatioSize
Vertical (recommended)9:16540 x 960 or larger
Horizontal16:9960 x 540 or larger
Square1:1640 x 640 or larger
ItemSpec
File types.mp4, .mov, .mpeg, .3gp, .avi
LengthUp to 10 minutes
File size500 MB or less
Bitrate516 kbps or more
Profile photo98 x 98, .jpg/.png, under 50 KB
Account nameOne line, up to 20 characters (10 for Chinese, Japanese, Korean)
CaptionsNo clickable links, @ symbols or hashtags

Spark Ads use the organic post caption; TikTok says up to 4 lines display, including emojis.

TikTok's spec page (updated June 2026) does not state an ad caption character limit, so we have left it out until verified.

✓ VerifiedLast checked 2026-10-21 Source: ads.tiktok.com.

FAQ

What size should a TikTok ad video be?

Vertical 9:16 at 540 x 960 or larger is recommended. Horizontal 16:9 (960 x 540 or larger) and square 1:1 (640 x 640 or larger) are accepted.

How long can a TikTok In-Feed ad be?

Up to 10 minutes for non-Spark In-Feed ads.

What is the TikTok ad caption character limit?

TikTok's spec page does not state one, so we have not listed it. Spark Ads show up to 4 lines of the organic caption.