Nano Studio Pro

Expand an image's canvas

expand_image

Outpaints an existing generation to a bigger canvas / new aspect ratio — the model extends the scene beyond the original edges. COSTS CREDITS (generate_* by output resolution). Creates a NEW generation in the source's own project. Optionally restrict directions with extend, or zoom out with zoom < 1. An uploaded asset works as the base too (asset_id, not both); its result goes to project_id or the asset's project.

Input Schema

TableJSON Schema

Name	Required	Description
`zoom`	No	0-1; below 1 zooms out (subject shrinks, more scene appears).
`extend`	No	Directions to extend. Default: all four.
`asset_id`	No
`project_id`	No	asset_id only.
`resolution`	No	Default: the source's.
`generation_id`	No
`target_aspect_ratio`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed3 schema fields changedOct 13, 2026

addedInput schema / properties / asset_id
```
Added value: +{
+  "type": "string"
+}
```

addedInput schema / properties / project_id

Added value: +{
+  "description": "asset_id only.",
+  "type": "string"
+}

changedInput schema / required

Previous value: -[
-  "generation_id",
-  "target_aspect_ratio"
-]New value: +[
+  "target_aspect_ratio"
+]

First observedSep 17, 2026

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