القائمة
Teaches agents how to author content and configure write_png so PNGs render at the correct size, with tight cropping, readable text, and consistent scaling.
التثبيت باستخدام Codex أو Claude انسخ هذا Prompt والصقه في Codex أو Claude أو مساعد آخر ليراجع صفحة Skill ويثبّتها لك.
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| name | png-press |
| description | Teaches agents how to author content and configure write_png so PNGs render at the correct size, with tight cropping, readable text, and consistent scaling. |
| version | 1.0.0 |
| category | document-creation |
| tags | ["png","rendering","html","markdown","mermaid"] |
| when_to_use | ["Rendering Mermaid diagrams to PNG","Rendering HTML layouts to PNG","Rendering Markdown snippets to PNG","Fixing tiny or mostly-blank PNG output","Improving readability via zoom/scale","Verifying Mermaid renders correctly (syntax + visual check) when needed"] |
| author | kdcube |
| created | "2026-02-18T00:00:00.000Z" |
| namespace | public |
The write_png tool renders HTML, Markdown, or Mermaid into PNG via headless Chromium.
The most common failure is tiny diagrams centered in a large blank canvas.
Use fit='content' (default) + correct selectors/width/zoom to crop and scale properly.
fit='content' to crop to the real content bounds.content_selector to a stable wrapper (e.g. #render-root).padding_px for margin around the crop.format='mermaid' with raw Mermaid text (no ``` fences).format='markdown' and fenced ```mermaid blocks.format='html' with a single wrapper element.width for wide diagrams (2200–3200px typical).zoom=1.2–1.8 when text is too small.device_scale_factor (2 or 3) for crisper output.mermaid_font_size_px (e.g. 16–22) and/or mermaid_scale (1.1–1.6).mermaid_font_family for consistent typography.render_delay_ms=1000–2000 for complex diagrams.Wrap your content in a root container so cropping is reliable.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<style>
body { margin: 0; background: white; }
#render-root {
display: inline-block;
padding: 16px;
font-family: Arial, sans-serif;
}
</style>
</head>
<body>
<div id="render-root">
<!-- content here -->
</div>
</body>
</html>
Then call:
format='html'content_selector='#render-root'fit='content'format='mermaid' and set width high enough for the diagram.zoom.Example:
write_png(
path="diagram.png",
content="graph LR\nA[\"Start\"]-->B[\"Process\"]",
format="mermaid",
width=2400,
zoom=1.4,
mermaid_font_size_px=18,
device_scale_factor=3,
fit="content",
render_delay_ms=1200
)
If Mermaid syntax breaks, use the public.mermaid skill to fix labels/quotes.
Example:
write_png(
path="summary.png",
format="markdown",
content="""
# Summary\n\n```mermaid\nflowchart LR\nA-->B\n```\n""",
fit="content",
width=2000
)
Problem: Tiny diagram in the middle of a blank page
fit='content' (default).content_selector for HTML.zoom and/or width.Problem: Diagram clipped on the right
width or reduce diagram complexity.max-width: 100% on SVG if it shrinks.Problem: Text too small
zoom to 1.4–1.8.device_scale_factor=2 or 3.mermaid_font_size_px (16–22) or mermaid_scale (1.2–1.5).Problem: Mermaid fails to render
public.mermaid skill.Create, inspect, edit, archive, delete, run, and search scheduled or executable automation assets.
Execution behavior for one saved automation job running in a fresh agent conversation.
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