# 1:1 square

Frame / Aspect ratio / Social. Checked 2026-10-13.

Neutral and centred; works everywhere a thumbnail goes.

- Use when: Profile pictures, marketplace listings, carousels.
- Phrase: 1:1 square frame, the subject centred
- Page: https://directorchair.ai/ratio/ratio-1-1
- JSON: https://directorchair.ai/api/ratio/ratio-1-1.json

## Watch out

- The same prompt in another ratio drifts; give the approved render back as a reference. (measured; Director Chair field notes on image prompting)

## Prompts

### Nano Banana Pro

```
[your subject] in [your setting]. Compose the image within a square 1:1 aspect ratio, focusing on central symmetry and balance.
```

### Nano Banana 2

```
[your subject] in [your setting]. Compose the image within a square 1:1 aspect ratio, focusing on central symmetry and balance.
```

### GPT Image 2.5

```
A photograph of [your subject] in [your setting].
People and framing: 1:1 square frame, the subject centred
Exclusions: no extra text, no watermark, no logo.
```

### Seedream 5

```
[your subject] in [your setting]. 1:1 square frame, the subject centred.
```

## Look further

- https://shotdeck.com/ : real film examples of this aspect ratio (paid, link only)
- https://flim.ai/ : film, ad and music-video stills of this aspect ratio (free tier, link only)

## Goes well with

- 4:5 portrait: https://directorchair.ai/ratio/ratio-4-5

## Source

The first Director Chair spec, own words

Text CC BY 4.0, Director Chair (directorchair.ai). Reference clips and their card texts belong to their makers.