vercel-labs/json-render1 file

Image

Name: Image
Availability: InStock
Author: vercel-labs

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.

Use this skill View repository View on skills.sh

Specification

Skill ID: vercel-labs/json-render/image
Publisher: vercel-labs
Repository: json-render
Installs: 0
Files: 1
Synced: Sep 23, 2026

How to use it

Open any RiverX project, open the Skills panel in the chat, and search for this identifier. The files are fetched from the source repository at install time.

vercel-labs/json-render/imageInstalls these files

SKILL.md

What this skill tells the agent

@json-render/image

Image renderer that converts JSON specs into SVG and PNG images using Satori.

Quick Start

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

import { defineCatalog } from "@json-render/core";
import { schema, standardComponentDefinitions } from "@json-render/image";

export const imageCatalog = defineCatalog(schema, {
  components: standardComponentDefinitions,
});

Adding Custom Components

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

Use this skill in a project

Open any RiverX project, search the Skills panel for vercel-labs/json-render/image, and install it in one click.

Use this skill