Use Case · TikTok

How to Create TikTok Video Thumbnails and Covers with AI

Design TikTok-ready covers and supporting graphics — vertical, on-brand, and built to drive views.

Made in Switzerland · 3-day free trial
Dario Kunz · Co-Founder & Tech Lead, publy.ch
Updated May 12, 2026

What are TikTok Videos?

TikTok videos are short-form vertical clips that live in the For You feed, the Following feed, and on creator profiles. The technical format is 1080 × 1920 px vertical, with videos ranging from 3 seconds to 10 minutes. While the video itself is the primary asset, the cover — the still image users see in profiles and search results — drives a measurable share of taps. TikTok lets creators select a frame as cover or upload a custom designed thumbnail with text overlay.

For US small businesses and creators, TikTok is the highest-organic-reach platform in 2026, with the For You algorithm capable of pushing brand-new accounts to millions of views. The 150+ million US monthly active users span Gen Z through Gen X, and TikTok Shop has turned the platform into a serious direct-to-consumer channel. The cover image is what makes a profile feel professional — a grid of designed covers reads completely differently from a grid of random frame-grabs. publy.ch handles cover design, supporting graphics (hooks shown on-screen, supporting visuals for the video itself), and end-screen CTAs.

How to create TikTok Video Assets with publy.ch

With publy.ch you produce TikTok cover and supporting graphics in minutes:

  1. Pick the TikTok template — pre-sized at 1080 × 1920 with the TikTok safe-zone overlay built in.
  2. Drop in a video still or hero photo — auto-cropped to vertical, brand-styled in one click.
  3. Generate the hook headline — the AI suggests 3–5 word hooks ("Don't make this mistake," "POV: you just…") that match TikTok native voice.
  4. Apply the brand kit — your colors, fonts, and logo layer on without making the cover feel "branded" in a bad way.
  5. Export for upload — 1080 × 1920 PNG for the cover, plus optional on-screen text graphics for the video itself.

The graphic outputs slot directly into TikTok's upload flow and into editors like CapCut.

Best Practices for TikTok Video Covers

  1. Cover safe zone is small. TikTok's UI covers the bottom 35% of the frame in profiles. Keep all key text above 65% height.
  2. Use a hook headline, not a generic title. "5 mistakes new founders make" beats "My founder story."
  3. High contrast against the video still. A bright headline on a muted background is what catches the eye in a fast-scrolling feed.
  4. Show a face when possible. Faces consistently outperform object-only covers in the For You feed and in profile grids.
  5. Match the cover to the first 3 seconds of the video. Bait-and-switch covers tank watch time, which destroys reach.
  6. Use brand color as a corner accent. A consistent flash of brand color across covers makes the profile grid feel intentional.
  7. Test cover designs. TikTok lets you swap covers post-publish. A weak performer often turns around with a new cover.
  8. Don't crowd the cover with text. 3–7 words on the cover. The video carries the rest.

Formats and Dimensions

  • Cover image: 1080 × 1920 px (9:16)
  • Profile grid display: 1080 × 1280 px effective area (top is cropped)
  • Profile safe zone (text): keep above the bottom 35% of frame
  • File format: PNG or JPG
  • Video itself: 1080 × 1920 px vertical, MP4
  • Recommended headline size: 80–140 px font

Common Mistakes to Avoid

  • Auto-picked frame as cover. Almost always off-center or unflattering. Always upload a custom cover.
  • Text behind UI elements. Like, comment, share, follow icons live on the right side. Keep text away from that area.
  • Cover doesn't match the video. If the cover promises "5 secrets" and the video doesn't deliver them, retention crashes.
  • Generic, brand-less covers. A polished profile grid is half the reason new viewers follow you.
  • Tiny text. TikTok is consumed on phones held at arm's length. Test cover legibility at thumbnail size.

Create TikTok Video Assets with AI — Try publy.ch Free for 3 Days

With publy.ch you build a TikTok profile grid that actually converts views into follows. AI hook generation, brand-kit-locked covers, and TikTok-correct dimensions. Start your 3-day free trial at publy.ch.