ausboss-ComfyUI-AusBoss/js/docs/AUSBOSS_NODES_Resolution.md

Latent Size 🆎

Pick a picture size by shape and megapixels, or by dragging. Use it in place of an Empty Latent node: it gives you the width, the height and a blank latent of that size.

• Shape: the left button selects landscape or portrait. Ratio chips follow that choice; square retains it for the next selection. Clicking a chip uses its generated size near one megapixel. Enable Chips keep current budget in the gear to retain the current area.
• Canvas: drag a side to change one dimension; drag the corner to scale both. Shift frees the corner ratio, Alt removes snapping, and Escape cancels the drag. The bright readout shows the size, megapixels and ratio; an amber dot means the size is off the snap grid, which a typed size can be. Arrow keys nudge the focused canvas by the snap step, or by 8 px with Shift.
• Size & budget: scrub or type W, H, or MP. Typed dimensions are preserved exactly. The swap button exchanges dimensions. The Sizes chips are ready-made sizes for the current ratio, small to large. They show while the shape is one of the ratio chips; any other shape shows one greyed-out "custom" chip.
• Gear: set the Snap step, edit the Ratio rail, choose the Latent family (latent) and Batch size (batch_size), and hide the Dot grid or MP cost curves. Snap step (8, 16, 32 or 64; starts at 32) is the grid that drags, arrow keys and chips land on. The Ratio rail is the list of ratio chips, typed as 1:1, 21:9. The display options apply to every Latent Size node in this browser; latent family and batch size (1 to 64) belong to this node.
• Node size: drag the node's corner to make it wider or taller, so it lines up with the nodes around it. The controls stretch with it, and the canvas preview takes any extra height. It can be as narrow as 320 pixels.

Workflow resolutions

In the gear, choose This workflow → Workflow resolutions → Edit list. Enter one exact width × height per line, up to 24. The list belongs to this node and travels with the saved workflow. An empty list leaves the normal editor unchanged.

• Recommendations: leave Limit choices to this list off. The Sizes row shows your quick picks, and users can still type, drag or choose another shape.
• Strict model sizes: turn the limit on. The Shape row shows only the exact ratios in the list. Select a ratio to see its allowed sizes. For example, 576×1024 and 720×1280 share 9:16; 480×864 is a separate 5:9 option. Landscape is available only if you list a landscape size. The canvas stays visible, but it cannot be stretched. The swap button works only if the exact reverse size is listed.
• On enabling the limit, an unlinked size stays selected if allowed; otherwise the first listed size is selected. A linked width or height is checked at run time, before the latent is allocated. An unsupported pair produces an error naming the allowed sizes. For video workflows, connect these width and height outputs to the video latent node.

Outputs and links

Outputs are width, height, and latent, in that order. The node has four input sockets above the panel: width, height, latent and batch_size. Linking width or height locks the controls that would change both dimensions; the other dimension remains editable. Linking latent or batch_size sets the latent family or batch size from another node, and the gear then shows that setting as linked. A linked value is read when the workflow runs, so the preview keeps showing the size stored on the node.

The Latent family is 16ch (8× downsample), 4ch (8×), or 128ch (16×). 16ch (the default) is for SD3, Flux 1, Krea 2, Qwen Image and Z-Image. 4ch is for SD 1.5 and SDXL. 128ch is for Flux 2 Klein. A model that packs pixels differently, such as Qwen Image 2.1, still gets the size you set: ComfyUI resizes the empty latent to fit it. This is an empty image latent; video models should take the width and height outputs and construct their own audio/video latent.

Typed sizes need not be divisible by the latent downsample factor. The integer outputs retain the typed size, while the latent spatial dimensions round down to complete cells, matching the core empty-latent nodes. Use aligned dimensions when wiring the latent directly. Large dimensions and batches allocate correspondingly large tensors.

Limits

Dimensions range from 64 to 8192 pixels. Extreme custom ratios may not have an exact solution inside that range at the chosen snap; they use a bounded approximation. Fine custom ratios can likewise only approximate the ratio during a snapped drag. Longer custom ratio lists scroll within the shape area.

All execution inputs are ordinary widgets, so API runs do not depend on this panel. Orientation and snap preferences are saved with the node. This node has no model downloads, network requests, or additional pip dependencies.