Use Case

YouTube Shorts cover images — consistent style, consistent face

Shorts competes in the same feed as long-form content. FatThumb keeps your face and visual brand identical across your Shorts covers and long-form thumbnails so your channel looks like a single series.

FatThumb — Studio
Product screenshot coming soon

How it works

Three steps from zero to upload-ready.

01

Describe your Shorts cover shot

Write the prompt for the cover frame you want: expression, background, any overlay text. Specify the vertical composition if you want the frame to suit the 9:16 feed layout.

02

Apply the same Person profile as your main channel

Select the Person profile you use for long-form thumbnails. Your face stays consistent across both formats — viewers recognise you across the full channel.

03

Generate and compare

Receive 1–4 variations and pick the one that reads best at mobile size. Download the 1280×720 PNG — you can upload it directly or crop to vertical for Shorts depending on your setup.

Features

Everything you need for the click.

Cross-format Consistency

Same face on Shorts and long-form

One Person profile, two formats. Your face stays identical whether the thumbnail is for a 15-second Short or a full-length video.

Style Repurposing

Reference your best long-form style

Use the Inspiration Library to extract the style from your highest-performing long-form thumbnail and apply that same energy to your Shorts covers.

Templates

Formats that work at mobile scale

Shorts are consumed primarily on mobile. Choose composition templates with strong facial close-ups and high-contrast backgrounds that read in the small feed card.

Speed

Cover image in under a minute

Shorts publish faster than long-form. FatThumb keeps your cover-image workflow just as fast — describe the shot, generate, done.

Brand Uniformity

Channel identity across all formats

Viewers who discover you via Shorts should immediately recognise your long-form channel — same face, same colour energy, same brand cues.

Download

1280×720 PNG ready to upload

FatThumb outputs 1280×720 PNG for every generation. For Shorts, you can upload this directly or crop to a vertical format — the cover image workflow varies by platform version, so check current YouTube Help Centre guidance.

FAQ

Questions & answers

Can I use the same thumbnail for YouTube Shorts and long-form?

FatThumb outputs 1280×720 PNG for every generation, which works as a standard YouTube thumbnail. For Shorts cover images, the exact upload workflow and recommended dimensions can vary between the mobile app and YouTube Studio desktop — check current YouTube Help Centre guidance for Shorts covers, as this can change.

What thumbnail size does YouTube Shorts use?

Unlike standard YouTube thumbnails (where 1280×720 is clearly documented), Shorts cover image behaviour is less consistent across platforms. Our free Thumbnail Resizer includes a 1080×1920 (9:16) preset that matches the Shorts vertical format. For current guidance, check the YouTube Help Centre.

How do I make my Shorts covers recognisable from my main channel?

Use the same Person profile across both formats. Optionally reference one of your best-performing long-form thumbnails in the Inspiration Library and apply its style to your Shorts prompt.

Can I batch-generate Shorts covers for a series?

Yes. Run the same template or Inspiration reference across multiple prompts with the same Person profile. The format stays consistent while the specific shot changes per Short.

Does FatThumb support vertical 9:16 output for Shorts?

The current output is always 1280×720 (16:9), which YouTube accepts as the Shorts cover image. A vertical-crop for in-video overlay is out of scope for v1; the 16:9 cover is the actionable output.

Keep your face consistent across every Shorts cover

Generate your first 5 thumbnails free — no card, no designer, your face consistent from the first run.

Get started free