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Design · Automation / AGENT SKILL
image
0
Render JSON specifications as SVG and PNG images with json-render and Satori.
Image renderer for json-render that turns JSON specs into SVG and PNG images via Satori. Use when working with @json-render/image, generating OG images from JSON, creating social cards, or rendering AI-generated image specs.
Understand the trade-offs.
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The full skill.
Original instructions from the publisher’s SKILL.md
# @json-render/image
Image renderer that converts JSON specs into SVG and PNG images using Satori.
## Quick Start
```typescript
import { renderToPng } from "@json-render/image/render";
import type { Spec } from "@json-render/core";
const spec: Spec = {
root: "frame",
elements: {
frame: {
type: "Frame",
props: { width: 1200, height: 630, backgroundColor: "#1a1a2e" },
children: ["heading"],
},
heading: {
type: "Heading",
props: { text: "Hello World", level: "h1", color: "#ffffff" },
children: [],
},
},
};
const png = await renderToPng(spec, {
fonts: [{ name: "Inter", data: fontData, weight: 400, style: "normal" }],
});
```
## Using Standard Components
```typescript
import { defineCatalog } from "@json-render/core";
import { schema, standardComponentDefinitions } from "@json-render/image";
export const imageCatalog = defineCatalog(schema, {
components: standardComponentDefinitions,
});
```
## Adding Custom Components
```typescript
import { z } from "zod";
const catalog = defineCatalog(schema, {
components: {
...standardComponentDefinitions,
Badge: {
props: z.object({ label: z.string(), color: z.string().nullable() }),
slots: [],
description: "A colored badge label",
},
},
});
```
## Standard Components
| Component | Category | Description |
|-----------|----------|-------------|
| `Frame` | Root | Root container. Defines width, height, background. Must be root. |
| `Box` | Layout | Container with padding, margin, border, absolute positioning |
| `Row` | Layout | Horizontal flex layout |
| `Column` | Layout | Vertical flex layout |
| `Heading` | Content | h1-h4 heading text |
| `Text` | Content | Body text with full styling |
| `Image` | Content | Image from URL |
| `Divider` | Decorative | Horizontal line separator |
| `Spacer` | Decorative | Empty vertical space |
## Key Exports
| Export | Purpose |
|--------|---------|
| `renderToSvg` | Render spec to SVG string |
| `renderToPng` | Render spec to PNG buffer (requires `@resvg/resvg-js`) |
| `schema` | Image element schema |
| `standardComponents` | Pre-built component registry |
| `standardComponentDefinitions` | Catalog definitions for AI prompts |
## Sub-path Exports
| Export | Description |
|--------|-------------|
| `@json-render/image` | Full package: schema, components, render functions |
| `@json-render/image/server` | Schema and catalog definitions only (no React/Satori) |
| `@json-render/image/catalog` | Standard component definitions and types |
| `@json-render/image/render` | Render functions only |