# AI YouTube Thumbnail Generator

> Combine a photo and headline into a clear, eye-catching video cover.

Canonical URL: https://allimageai.com/ai-tools/youtube-thumbnail/

Website: All Image AI

Language: English

A thumbnail is judged at thumbnail size on a phone, which makes the rules concrete: few words, high contrast, and keep the bottom-right clear for the duration badge. Those constraints are baked into the defaults here — you supply the image and the headline.

## Default pipeline

1. Upload a face or source image
2. Pick a style
3. 16:9 composition
4. Raise contrast and saturation
5. Avoid the duration badge area
6. Export 1280×720

## How to use

1. Upload a photo or source image.
2. Choose a layout that puts the text away from the face.
3. Keep the headline to five words or fewer.
4. Export at 1280×720.

## Supported models

- [Seedream 4.5](https://allimageai.com/models/seedream-4-5.md): ByteDance; Active.
- [FLUX.1 Kontext Max](https://allimageai.com/models/flux-kontext-max.md): Black Forest Labs; Active.
- [Bria FIBO 1.5](https://allimageai.com/models/bria-fibo-1-5.md): Bria; Active.
- [Ideogram 4](https://allimageai.com/models/ideogram-4.md): Ideogram; Active.
- [Qwen Image Max](https://allimageai.com/models/qwen-image-max.md): Alibaba; Active.
- [Qwen Image 3 Pro](https://allimageai.com/models/qwen-image-3-pro.md): Alibaba; Active.
- [Seedream 5 Lite](https://allimageai.com/models/seedream-5-lite.md): ByteDance; Active.
- [Seedream 5 Pro](https://allimageai.com/models/seedream-5-pro.md): ByteDance; Active.
- [Kling Image V3](https://allimageai.com/models/kling-image-v3.md): Kuaishou; Active.
- [Ideogram 3](https://allimageai.com/models/ideogram-3.md): Ideogram; Active.
- [GPT Image](https://allimageai.com/models/gpt-image.md): OpenAI; Active.
- [Nano Banana 2](https://allimageai.com/models/nano-banana-2.md): Google; Active.

## Output

- Format: JPG 1280×720
- Text kept inside the central safe area

## Frequently asked questions

### Why was my headline cut off?

It is too long or too close to the edge. Shorten it and keep it in the central safe area.

### Is there a file size limit?

YouTube caps thumbnails at 2MB; the JPG export is optimised for that.

## Image handling

Uploaded images are sent to the configured inference service for processing. You can delete a generation from your history.

## Related tools

- [Poster Generator](https://allimageai.com/ai-tools/poster-generator.md)
- [Image Expander](https://allimageai.com/ai-tools/image-expander.md)
- [Social Post Generator](https://allimageai.com/ai-tools/social-post-generator.md)