ComfyUI-AspectRatioSizePicker

Aspect Ratio Size Picker

Python ComfyUI License

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

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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