TikTok Instant Form Layout Limits: Banner 1080 px, Headline 30

What are the Instant Form layout limits?

TikTok's form layout article (April 2025) lists a banner at 1080 px, and a logo at 1080 px recommended. Display name is under 60 characters and company name under 50. Product Details have a headline under 30, a description under 50 and a sub headline under 30. A carousel holds at most 5 sets, product bullets at most 3, and testimonials sit in 2 columns or 1 row of 3, up to 3 rows. FAQ and Steps bullets run from 2 to 5. Layouts are Simple Sign-Up, Rich Content, AI-generated and Create Your Own. I read the page on 2026-10-03.

What images does a form need?

A banner and a logo, both specified by width only on this page. Other image slots, such as carousel items, are not given sizes in what I read, so check the Ads Manager editor for those.

How do I make the banner and logo with Sume?

POST /v1/images with model: "sume/auto"; for a wide banner, aspect_ratio: "16:9" is a listed option, and for a logo, 1:1. The page gives a width of 1080 px but no height, so open the generated file and check that its width is at least 1080 before upload. Writes need an Idempotency-Key header.

Keep text out of generated images where possible; a logo with letters is better supplied from your own vector file than generated.

• Banner: check width of 1080 px.
• Logo: use your own mark.
• Write the headline under 30 characters first.

Which layout should I choose?

Simple Sign-Up for a short form, Rich Content when you need to explain the offer. The AI-generated layout is TikTok's feature; review its text against the limits above.