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exporting-to-png

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更新日2026年6月24日 02:43

Export code, terminal output, diagrams, or UI components to PNG images using headless browser rendering or CLI tools.

インストール

Codex または Claude でインストールこの Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。

Manusで実行

ソース

0xAidan

0xAidan/polymarket-bot-test

GitHub リポジトリを開く Creator のリポジトリを見る

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Manusで実行

Exporting to PNG

Convert code snippets, Markdown content, terminal output, diagrams, or rendered UI components into PNG image files.

Methods

1. HTML → PNG via Headless Browser

The most flexible approach. Render any content as HTML and screenshot it.

# Using Playwright (if available)
npx playwright screenshot --full-page "file:///path/to/content.html" output.png

# Using Puppeteer one-liner
node -e "
const puppeteer = require('puppeteer');
(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.setContent(\`<html>...</html>\`);
  await page.screenshot({ path: 'output.png', fullPage: true });
  await browser.close();
})();
"

Steps:

Generate an HTML file with the content styled appropriately (syntax highlighting, padding, fonts)
Use a headless browser to render and capture
Crop if needed using an image tool

2. Code → PNG with Carbon or Silicon

For styled code screenshots:

# silicon (Rust CLI, fast)
silicon --language python --output code.png source.py
silicon --from-clipboard --output code.png

# Or generate a Carbon URL for browser capture
# https://carbon.now.sh/?l=python&code=<url-encoded-code>

3. Mermaid Diagrams → PNG

# Using mermaid-cli
npx @mermaid-js/mermaid-cli mmdc -i diagram.mmd -o diagram.png -b transparent

# Or with Docker
docker run --rm -v "$(pwd)":/data minlag/mermaid-cli mmdc -i /data/diagram.mmd -o /data/diagram.png

4. SVG → PNG

# Using sharp (Node.js)
node -e "
const sharp = require('sharp');
sharp('input.svg').png().toFile('output.png');
"

# Using Inkscape CLI
inkscape input.svg --export-type=png --export-filename=output.png

# Using ImageMagick
convert input.svg output.png

5. Terminal Output → PNG

# Using termshot (if installed)
termshot -- ls -la

# Manual approach: capture output, wrap in HTML with monospace font, screenshot

Workflow

Determine the content type (code, diagram, HTML, terminal, SVG)
Check which tools are available in the environment (which silicon, npx --help, etc.)
Choose the best method and generate the PNG
Verify the output exists and is non-empty: file output.png && ls -la output.png
Report the file path and dimensions

Tips

For code screenshots, use a dark theme with generous padding (32px+) for a polished look
Set deviceScaleFactor: 2 in Playwright/Puppeteer for retina-quality output
For transparent backgrounds, use --background transparent or omitBackground: true
If no specialized tool is installed, fall back to the HTML + headless browser method — it works for everything

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name	exporting-to-png
description	Export code, terminal output, diagrams, or UI components to PNG images using headless browser rendering or CLI tools.
user-invocable	true

Exporting to PNG

Convert code snippets, Markdown content, terminal output, diagrams, or rendered UI components into PNG image files.

Methods

1. HTML → PNG via Headless Browser

The most flexible approach. Render any content as HTML and screenshot it.

# Using Playwright (if available)
npx playwright screenshot --full-page "file:///path/to/content.html" output.png

# Using Puppeteer one-liner
node -e "
const puppeteer = require('puppeteer');
(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.setContent(\`<html>...</html>\`);
  await page.screenshot({ path: 'output.png', fullPage: true });
  await browser.close();
})();
"

Steps:

Generate an HTML file with the content styled appropriately (syntax highlighting, padding, fonts)
Use a headless browser to render and capture
Crop if needed using an image tool

2. Code → PNG with Carbon or Silicon

For styled code screenshots:

# silicon (Rust CLI, fast)
silicon --language python --output code.png source.py
silicon --from-clipboard --output code.png

# Or generate a Carbon URL for browser capture
# https://carbon.now.sh/?l=python&code=<url-encoded-code>

3. Mermaid Diagrams → PNG

# Using mermaid-cli
npx @mermaid-js/mermaid-cli mmdc -i diagram.mmd -o diagram.png -b transparent

# Or with Docker
docker run --rm -v "$(pwd)":/data minlag/mermaid-cli mmdc -i /data/diagram.mmd -o /data/diagram.png

4. SVG → PNG

# Using sharp (Node.js)
node -e "
const sharp = require('sharp');
sharp('input.svg').png().toFile('output.png');
"

# Using Inkscape CLI
inkscape input.svg --export-type=png --export-filename=output.png

# Using ImageMagick
convert input.svg output.png

5. Terminal Output → PNG

# Using termshot (if installed)
termshot -- ls -la

# Manual approach: capture output, wrap in HTML with monospace font, screenshot

Workflow

Determine the content type (code, diagram, HTML, terminal, SVG)
Check which tools are available in the environment (which silicon, npx --help, etc.)
Choose the best method and generate the PNG
Verify the output exists and is non-empty: file output.png && ls -la output.png
Report the file path and dimensions

Tips

For code screenshots, use a dark theme with generous padding (32px+) for a polished look
Set deviceScaleFactor: 2 in Playwright/Puppeteer for retina-quality output
For transparent backgrounds, use --background transparent or omitBackground: true
If no specialized tool is installed, fall back to the HTML + headless browser method — it works for everything