Shorts thumbnail generator

Plan Shorts covers before the scroll decides

Make vertical thumbnail directions for Shorts, Reels, and TikTok-style edits with big mobile text and a clear first impression.

9:16 firstMobile text checkFast variants

Create a Shorts cover Open full workbench

Shorts brief

Tall crop, big text, one clear subject

A/B SET

WAIT FOR IT

Quick SEO answer

How to use this shorts thumbnail generator

The fastest path is not to ask for a finished design first. Write the click reason, compare a few cover angles, then only polish the direction that feels strongest.

Starter hook

I tried this for 7 days

First check

Choose 9:16 for vertical-first publishing.

1. Start with the click reason

Use the video title, the cover text, or the one question viewers should ask before they click.

2. Keep the proof visible

If the video depends on a face, object, score, result, or before-and-after moment, make that the main subject.

3. Move the winner into the workbench

Once one direction feels promising, open the full workbench to add assets, save history, and generate with credits.

Try hooks like

I tried this for 7 days

The ending makes no sense

Do not skip this setup step

Design for the phone first

Choose 9:16 when the cover needs to work in a vertical feed.

Keep the words big enough for a thumb-stop moment.

Use the workbench for extra assets when the quick page is not enough.

Cover direction examples

Turn one rough hook into three testable cover angles

Search visitors need proof quickly. These examples show the ThumbAI workflow: start with a plain video idea, then compare curiosity, bold text, and subject-focused directions before editing.

Rough hook

I tried this for 7 days

A/B-ready directions

Curiosity hook

Bold text

Subject focus

Use this hook

Rough hook

The ending makes no sense

A/B-ready directions

Curiosity hook

Bold text

Subject focus

Use this hook

Rough hook

Do not skip this setup step

A/B-ready directions

Curiosity hook

Bold text

Subject focus

Use this hook

Shorts cover ideas for vertical feeds

Shorts covers need to work quickly. The crop is tighter, the text is larger, and the subject has to read at phone size.

Reaction clips

Use the face or turning point as the subject. The text should set up the reason to wait.

Quick tutorials

Show the step or result. A vertical cover has less room, so the promise needs to be sharper.

Repurposed long videos

Turn the best moment from a 16:9 video into a tighter 9:16 cover without keeping every detail.

Best for

YouTube ShortsReelsTikTok editsmobile previews

Before you generate

Choose 9:16 for vertical-first publishing.

Use fewer words than a normal YouTube cover.

Keep the subject centered enough for mobile crops.

Preview the idea as if it were only two inches tall.

Shorts thumbnail notes

Do Shorts need a different thumbnail style?

Often yes. Vertical covers need bigger text, tighter crops, and less detail because people see them on a phone.

Can I still make a normal 16:9 thumbnail?

Yes. Switch the output size in the generator when you need a standard YouTube cover.

Why do Shorts covers need bigger text?

They are usually seen smaller and faster. Bigger text gives the viewer a reason to stop before the next swipe.

Can I reuse a regular thumbnail for Shorts?

Sometimes, but a direct crop often cuts off the subject or makes the text too small. A vertical direction is safer.

Keep exploring

More thumbnail tools

Switch by channel type and start with a thumbnail direction that already fits the video.

Strategy guideRead the matching thumbnail guideUse the generator when you want directions fast. Use the guide when you want to understand which click angle is worth testing first.Open guide

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Make the vertical cover readable first

Generate three 9:16 directions and check whether the subject and hook still work at phone size.

Generate Shorts directions

Shorts thumbnail generator

Plan Shorts covers before the scroll decides

Make vertical thumbnail directions for Shorts, Reels, and TikTok-style edits with big mobile text and a clear first impression.

9:16 firstMobile text checkFast variants

Create a Shorts cover Open full workbench

Shorts brief

Tall crop, big text, one clear subject

A/B SET

WAIT FOR IT

Quick SEO answer

How to use this shorts thumbnail generator

The fastest path is not to ask for a finished design first. Write the click reason, compare a few cover angles, then only polish the direction that feels strongest.

Starter hook

I tried this for 7 days

First check

Choose 9:16 for vertical-first publishing.

1. Start with the click reason

Use the video title, the cover text, or the one question viewers should ask before they click.

2. Keep the proof visible

If the video depends on a face, object, score, result, or before-and-after moment, make that the main subject.

3. Move the winner into the workbench

Once one direction feels promising, open the full workbench to add assets, save history, and generate with credits.

Try hooks like

I tried this for 7 days

The ending makes no sense

Do not skip this setup step

Design for the phone first

Choose 9:16 when the cover needs to work in a vertical feed.

Keep the words big enough for a thumb-stop moment.

Use the workbench for extra assets when the quick page is not enough.

Cover direction examples

Turn one rough hook into three testable cover angles

Search visitors need proof quickly. These examples show the ThumbAI workflow: start with a plain video idea, then compare curiosity, bold text, and subject-focused directions before editing.

Rough hook

I tried this for 7 days

A/B-ready directions

Curiosity hook

Bold text

Subject focus

Use this hook

Rough hook

The ending makes no sense

A/B-ready directions

Curiosity hook

Bold text

Subject focus

Use this hook

Rough hook

Do not skip this setup step

A/B-ready directions

Curiosity hook

Bold text

Subject focus

Use this hook

Shorts cover ideas for vertical feeds

Shorts covers need to work quickly. The crop is tighter, the text is larger, and the subject has to read at phone size.

Reaction clips

Use the face or turning point as the subject. The text should set up the reason to wait.

Quick tutorials

Show the step or result. A vertical cover has less room, so the promise needs to be sharper.

Repurposed long videos

Turn the best moment from a 16:9 video into a tighter 9:16 cover without keeping every detail.

Best for

YouTube ShortsReelsTikTok editsmobile previews

Before you generate

Choose 9:16 for vertical-first publishing.

Use fewer words than a normal YouTube cover.

Keep the subject centered enough for mobile crops.

Preview the idea as if it were only two inches tall.

Shorts thumbnail notes

Do Shorts need a different thumbnail style?

Often yes. Vertical covers need bigger text, tighter crops, and less detail because people see them on a phone.

Can I still make a normal 16:9 thumbnail?

Yes. Switch the output size in the generator when you need a standard YouTube cover.

Why do Shorts covers need bigger text?

They are usually seen smaller and faster. Bigger text gives the viewer a reason to stop before the next swipe.

Can I reuse a regular thumbnail for Shorts?

Sometimes, but a direct crop often cuts off the subject or makes the text too small. A vertical direction is safer.

Keep exploring

More thumbnail tools

Switch by channel type and start with a thumbnail direction that already fits the video.

Strategy guideRead the matching thumbnail guideUse the generator when you want directions fast. Use the guide when you want to understand which click angle is worth testing first.Open guide

Make the vertical cover readable first

Generate three 9:16 directions and check whether the subject and hook still work at phone size.

Generate Shorts directions