Your editor's best companion

Click-worthy thumbnails in an instant.

Generate thumbnail drafts in minutes. Iterate with quick edit prompts. Download when ready.

Made with Gemini 3 Pro
Thumbnail concept showing one gorilla against many menThumbnail concept comparing expensive and cheap ice creamThumbnail concept with a person looking into an ice caveThumbnail concept comparing football and NFLThumbnail concept for eating every item at McDonald's

Prompt: 1 Gorilla vs 100 Men

Generation

Create from a title prompt

Iteration

Refine results with follow-up edits

Output

Download each thumbnail directly

Workflow

A calm, repeatable flow for every upload.

Keep your workflow focused: generate a draft, iterate with follow-up prompts, and export when it is ready.

Step 01Input

Write the video title

Start with your title or brief in Studio to create a new chat.

Step 02Iterate

Generate and iterate

Create a first thumbnail draft, then use edit prompts to refine the latest result.

Step 03Export

Download and ship

Download the image when it is ready and finish final polish in your editor.

Features

What you can do

No placeholder promises. These are the capabilities available in the current app.

Prompt-to-thumbnail

Turn a video title into a generated 16:9 thumbnail draft.

Follow-up edits

Apply targeted edits to the latest image with a simple follow-up prompt.

People references

Upload recurring people and reuse them to preserve identity.

Model selection

Switch between available models based on your preference.

Threaded history

Keep generations organized in threads and branch from older ones.

Direct download

Download each generated image directly from the gallery.

Ready to start

Build and refine your next thumbnail in one place.

Start with a title, iterate with prompt edits, and download the image when you are ready.

thumbn.ai - YouTube Thumbnail Generator