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md-code-image-cli

v0.1.5

Published

Generate syntax-highlighted PNG images from Markdown fenced code blocks.

Vulnerabilities

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Links

Git

Maintainers

pjstackpjstack

Keywords

markdowncodeimagepngshikisatoricli

Readme

md-code-image-cli

Generate syntax-highlighted PNG images from Markdown fenced code blocks in pure Node.js.

Built-in font fallback covers Latin code text and Simplified Chinese comments/strings.

The published package vendors the runtime fonts it needs. Font license notices are included in LICENSES/.

Requirements

  • Node.js 18+

Install

npm install

From npm:

npm install -g md-code-image-cli

Build

npm run build

Usage

node dist/cli/index.js input.md

Installed globally:

md-code-image input.md

Or in development:

npm run dev -- input.md

Options

  • --out <path>: output directory, default ./output
  • --theme <theme>: Shiki theme, default github-dark
  • --line-numbers: render line numbers
  • --window <mac|none>: window chrome style, default none
  • --background <solid|gradient|transparent>: outer background, default solid
  • --padding <number>: card padding, default 24
  • --radius <number>: card radius, default 12
  • --scale <1|2|3>: PNG export scale, default 2
  • --max-width <number>: maximum card width, default 800

Output

Each fenced code block is exported as a separate PNG:

output/
  code-01-js.png
  code-02-ts.png
  code-03-bash.png

Unnamed or unsupported languages fall back to txt for filenames and plaintext highlighting for rendering.

Development

npm test

Publish Notes

Local manual publish:

npm test
npm run build
npm publish

prepublishOnly already runs test and build automatically.

Automated publish:

  • Every push or merge into main bumps the patch version automatically
  • The workflow commits the updated package.json and package-lock.json
  • The same workflow tags the release as v<version> and publishes to npm

License

  • Project code: MIT, see LICENSE
  • Bundled fonts: SIL Open Font License 1.1, see LICENSES/