Extensions/Aspect Ratio Size Picker
ComfyUI Extension

Aspect Ratio Size Picker

A single, no-nonsense node to pick text-to-image dimensions from an aspect-ratio dropdown, a long-edge slider, and an invert toggle. Outputs width/height (INT) plus an info STRING that previews the resolved size, orientation and common long-edge reference sizes.

By EternalShade3D·Created 22 days ago·Updated 21 days ago· 0
EternalShade3D/ComfyUI-AspectRatioSizePicker
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Aspect Ratio Size Picker

A single, focused ComfyUI node for picking text-to-image dimensions without fiddling with manual width/height fields or chaining resize + rotate nodes.

Category: EternalShade3D → Aspect Ratio Size Picker

icon

Why

Most size-picking nodes either force you into megapixel math or are buried inside image-resize pipelines. This node does exactly one thing: pick a target canvas size for an Empty Latent Image node from three intuitive controls — and it tells you, in plain text, what you just selected.

Controls

| Control | Type | Notes | | --- | --- | --- | | Aspect Ratio | Dropdown | 1:1 (Square), 4:3 (Standard), 3:2 (Classic 35mm Film), 5:4 (Large Format), 16:9 (Widescreen), 16:10 (Widescreen) | | Long Edge | Slider (INT) | 64–8192, step 8. Always maps to the larger dimension. | | Invert | Toggle | Swaps the ratio (e.g. 4:3 → 3:4, 16:9 → 9:16). |

Outputs

  • width (INT)
  • height (INT)
  • info (STRING) — a live text preview so you can see what the node resolved:
=== PORTRAIT ===
16:9  ->  INVERTED  ->  9:16
Size: 1080 x 1920
Long edge 1920 = Full HD long edge / YouTube 1080p
Common long edges: 720, 1080, 1200, 1280, 1440, 1920, 2048, 2160, 2560, 3508, 3840, 4096, 5120, 7680
  • The === PORTRAIT / LANDSCAPE / SQUARE === line is a semi-title so you immediately know the orientation.
  • The inverted preview shows the original ratio → flipped ratio when Invert is on.
  • The Common long edges line is a reminder of standard photography / video / social sizes.

Both width and height are snapped to a multiple of 8 for ComfyUI latent alignment.

Example

Aspect Ratio Size Picker ──width──▶ Empty Latent Image
                       └─height─┘
                       └─info────▶ (preview text, optional)

Wire width and height straight into an Empty Latent Image node's width/height inputs.

Common long-edge reference

| Long edge | Used for | | --- | --- | | 720 | HD 720p | | 1080 | Full HD / Social base (IG, FB, TikTok, YT, X) | | 1200 | Facebook shared link / high-res social | | 1280 | HD video / YouTube thumbnail | | 1440 | QHD short edge | | 1920 | Full HD long edge / YouTube 1080p | | 2048 | Photo print @300dpi (~4x6 in) | | 2160 | 4K short edge | | 2560 | QHD (1440p) long edge | | 3508 | A3 print @300dpi | | 3840 | 4K UHD long edge | | 4096 | DCI 4K | | 5120 | 5K | | 7680 | 8K UHD |

Install

ComfyUI Manager (registry)

Search Aspect Ratio Size Picker and install.

Manual

cd ComfyUI/custom_nodes
git clone https://github.com/EternalShade3D/ComfyUI-AspectRatioSizePicker.git
# restart ComfyUI

License

MIT © EternalShade3D