About codetoimage-mcp-server
codetoimage-mcp-server renders HTML and CSS as PNG, JPEG, or WebP for MCP-compatible clients. It can return the image inline or provide a temporary hosted URL that expires after 24 hours.
Key features
- 01Render HTML and CSS to images
- 02Return images inline in chat
- 03Create hosted image URLs valid for 24 hours
- 04Use saved templates and variables
- 05Set dimensions, formats, and presets
Use cases
- 01Preview a social card or chart in chat
- 02Create an Open Graph image and URL
- 03Render a transparent image for a dark background
MCP support
The MCP server exposes two rendering tools: one returns image content inline, and the other returns a temporary hosted URL. An API key is required.
Configuration
Local server config is the same for every client. Copy it into your client’s MCP config file.
npx -y @codetoimage/mcp-serverCODETOIMAGE_API_KEYSecretAPI key from https://codetoimage.app/dashboard/keys (starts with cti_live_…). Sandbox tier is free.CODETOIMAGE_API_URLOverride the API base URL. Defaults to https://api.codetoimage.app.Local servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.
Tools
2Saved tool list · updated 2w ago
| Parameter | Type | Required | Description |
|---|---|---|---|
| css | string | No | Optional CSS injected as a <style> block. |
| html | string | No | Full HTML (typically including <body>…</body>). Inline styles work; for larger CSS use the `css` field. Required unless `template_id` is provided. |
| width | integer | No | Viewport width in pixels (default 800). |
| format | enum | No | Output format. Default: png.png | jpeg | webp |
| height | integer | No | Viewport height in pixels (default 600). |
| preset | enum | No | Named viewport size: og 1200×630, twitter-card 1200×628, facebook-post 1200×630, linkedin-post 1200×627, instagram-square 1080×1080, instagram-portrait 1080×1350, instagram-story 1080×1920, youtube-thumbnail 1280×720, pinterest-pin 1000×1500. One template, many sizes. Explicit width/height override the preset.og | twitter-card | facebook-post | linkedin-post | instagram-square | instagram-portrait | instagram-story | youtube-thumbnail | pinterest-pin |
| quality | integer | No | Encoder quality (JPEG/WebP only, 1-100). |
| variables | object | No | Values for {{placeholders}} in the template (or in `html` if provided). Values are HTML-escaped server-side. Missing placeholders render as empty. |
| background | string | No | Background color, e.g. '#ffffff' or 'rgb(10,10,10)'. |
| template_id | string | No | ID of a template saved in the codetoimage dashboard (Templates page). Use INSTEAD of `html` – the saved HTML/CSS renders with {{placeholders}} filled from `variables`. |
| transparent | boolean | No | Transparent background (PNG/WebP only; paid plans). |
Details
From the project README@codetoimage/mcp-server
Official Model Context Protocol server for codetoimage.app – render HTML/CSS to PNG/JPG/WebP directly from Claude Desktop, Claude Code, Cursor, or any MCP-compatible client.
What you get
Two tools, no setup beyond an API key:
render_html_to_image– returns the image inline so your agent (or you, in chat) can see it immediately. Best for "show me the rendered card", OG preview iteration, chart generation, badge mockups.render_html_to_url– returns a temporary hosted URL (24h TTL). Best when the image needs to live somewhere external – Instagram Graph API, OpenGraph meta tags, Slack unfurls, docs/posts embeds.
Install
You don't need to install anything globally – MCP clients can run it via npx. Get an API key at codetoimage.app/dashboard/keys, then add the config below.
Claude Desktop
Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):
{
"mcpServers": {
"codetoimage": {
"command": "npx",
"args": ["-y", "@codetoimage/mcp-server"],
"env": {
"CODETOIMAGE_API_KEY": "cti_live_..."
}
}
}
}
Restart Claude Desktop. The two tools appear in the tool picker.
Claude Code
claude mcp add codetoimage -s user -- npx -y @codetoimage/mcp-server
Then set the env var in your shell profile (or pass -e CODETOIMAGE_API_KEY=cti_live_… in the claude mcp add call).
Cursor
Edit ~/.cursor/mcp.json:
{
"mcpServers": {
"codetoimage": {
"command": "npx",
"args": ["-y", "@codetoimage/mcp-server"],
"env": {
"CODETOIMAGE_API_KEY": "cti_live_..."
}
}
}
}
Usage from an agent
The tools are self-documenting – your agent will pick the right one based on intent. Example prompts that just work:
"Render this card as a PNG:
<div style='padding:40px;background:#6366f1;color:white;border-radius:16px'>Hello</div>at 800×400."
"Generate an Open Graph image for the blog post 'Why agents need pixel-perfect rendering' and give me a URL I can paste into the og:image meta tag."
"Take this CSS card and render it as a transparent PNG so I can use it on a dark background."
"Render my saved template 3f2a91d0-... with title 'Launch day' as an Instagram story."
Tool schemas
render_html_to_image
| Field | Type | Required | Notes |
|---|---|---|---|
html | string | ✓* | Full HTML (typically with <body>). *Not needed with template_id |
css | string | – | Optional CSS injected as <style> |
template_id | uuid | ✓* | Saved template from the dashboard (Templates page); alternative to html |
variables | object | – | Values for {{placeholders}} in the template (HTML-escaped) |
preset | enum | – | Named size: og, twitter-card, facebook-post, linkedin-post, instagram-square, instagram-portrait, instagram-story, youtube-thumbnail, pinterest-pin |
width | integer 1-2048 | – | Default 800; overrides preset |
height | integer 1-2048 | – | Default 600; overrides preset |
format | png | jpeg | webp | – | Default png |
quality | integer 1-100 | – | JPEG/WebP only |
transparent | boolean | – | PNG/WebP, paid plans |
background | string | – | e.g. #ffffff or rgb(…) |
Returns: image content (base64 inline), rendered in the chat.
render_html_to_url
Same input schema as render_html_to_image. Returns a text block with:
url– temporary hosted image URLformat– final output formatexpires_at– ISO timestamp (24h from render)credits_remaining– your plan's quota state
Configuration
| Variable | Default | Purpose |
|---|---|---|
CODETOIMAGE_API_KEY | – | Required. Get one at codetoimage.app/dashboard/keys |
CODETOIMAGE_API_URL | https://api.codetoimage.app | API base URL (override for dev/proxy) |
Plans + limits
- Free – 50 renders/month, no watermark, full features (up to 2048×2048, all formats).
- Paid (Starter / Hobby / Pro / Scale) – from $9/mo for 1,000 renders up to 50,000/month, higher rate limits.
- Pay as you go – prepaid credit packs from $5, valid 12 months, no subscription.
Pricing: codetoimage.app/#pricing
Related
- Web dashboard + REST API
@codetoimage/cli– terminal/CI usage
License
MIT
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