# Aspect Ratio

> The Aspect Ratio node holds one frame shape, such as 16:9 or 9:16. It cannot be wired into image or video nodes, so set the ratio on each node.

Source: https://nodaro.ai/docs/nodes/settings/aspect-ratio

The **Aspect Ratio** node holds one frame shape: `16:9`, `9:16`, `1:1`, `4:3` or `4:5`. It never runs a model and costs nothing.

- Found in: Models › Generation Settings
- Output: text
- API type: `aspect-ratio`

**It does not change a run:** 
The canvas refuses a wire from Aspect Ratio to [Generate Image](https://nodaro.ai/docs/nodes/image/generate-image) or [Generate Video](https://nodaro.ai/docs/nodes/video/generate-video), so the ratio it holds never reaches a run. Set **Aspect Ratio** in each image or video node's own settings.

## Settings
| Setting | What it does |
| --- | --- |
| **Aspect Ratio** | **16:9 (Landscape)** (default), **9:16 (Portrait)**, **1:1 (Square)**, **4:3** or **4:5**. |

## Which ratio for which platform

| Ratio | Use it for |
| --- | --- |
| `16:9` | YouTube, desktop and other widescreen video |
| `9:16` | TikTok, Instagram Reels, YouTube Shorts and other vertical mobile formats |
| `1:1` | Square social posts, such as the Instagram feed |
| `4:5` | Portrait feed posts that fill more of the Instagram feed |
| `4:3` | Classic 4:3 framing |

Image and video nodes offer these shapes and often more, such as `21:9`, `3:2` and `2:3`, depending on the model. On Generate Video, **Adaptive** or **Auto (from image)** matches the shape of a connected start frame.

## Tips
- **Decide the platform first.** Choose the ratio before you generate, instead of cropping later.
- **Reformat a finished video.** To turn a landscape video into a vertical one, use [Social Media Format](https://nodaro.ai/docs/nodes/video/social-media-format).

## Frequently asked questions

### Does the Aspect Ratio node set the shape of my images and clips?

No. It cannot be connected to Generate Image or Generate Video, so its ratio does not reach a run. Set Aspect Ratio in each image or video node's own settings.

### Which ratio should I use for TikTok and Reels?

Use 9:16, the vertical format of TikTok, Instagram Reels and YouTube Shorts. Use 16:9 for YouTube and other widescreen video, and 1:1 or 4:5 for feed posts.

### Why can I not find a ratio in a node's settings?

The choices depend on the model. Each model page lists the aspect ratios the model accepts.

### Does the Aspect Ratio node cost credits?

No. It only holds a value and never runs a model.