markdown-pdf

markdown-pdf

Node module that converts Markdown files to PDFs.

The PDF looks great because it is styled by HTML5 Boilerplate. What? - Yes! Your Markdown is first converted to HTML, then pushed into the HTML5 Boilerplate index.html. Phantomjs renders the page and saves it to a PDF. You can even customise the style of the PDF by passing an optional path to your CSS and you can pre-process your markdown file before it is converted to a PDF by passing in a pre-processing function, for templating.

Install

npm install -g markdown-pdf --ignore-scripts

Note: elevated (sudo) permissions may be needed for npm install -g

Usage

…

markdown-pdf can also be used programmatically:

var markdownpdf = require("markdown-pdf")
  , fs = require("fs")

fs.createReadStream("/path/to/document.md")
  .pipe(markdownpdf())
  .pipe(fs.createWriteStream("/path/to/document.pdf"))

// --- OR ---

markdownpdf().from("/path/to/document.md").to("/path/to/document.pdf", function () {
  console.log("Done")
})

Options

Pass an options object (markdownpdf({/* options */})) to configure the output.

options.cwd

Type: String Default value: process.cwd()

Current working directory.

options.phantomPath

Type: String Default value: Path provided by phantomjs module

Path to the phantomjs binary.

options.cssPath

Type: String Default value: [module path]/markdown-pdf/css/pdf.css

Path to custom CSS file, relative to the current directory.

options.highlightCssPath

Type: String Default value: [module path]/markdown-pdf/css/highlight.css

Path to custom highlight CSS file (for code highlighting with highlight.js), relative to the current directory.

options.paperFormat

Type: String Default value: A4

'A3', 'A4', 'A5', 'Legal', 'Letter' or 'Tabloid'.

options.paperOrientation

Type: String Default value: portrait

'portrait' or 'landscape'.

options.paperBorder

Type: String Default value: 2cm

Supported dimension units are: 'mm', 'cm', 'in', 'px'

options.runningsPath

Type: String Default value: runnings.js

Path to CommonJS module which sets the page header and footer (see runnings.js).

options.renderDelay

Type: Number Default value: Time until page.onLoadFinished event fired

Delay (in ms) before the PDF is rendered.

options.loadTimeout

Type: Number Default value: 10000

If renderDelay option isn't set, this is the timeout (in ms) before the page is rendered in case the page.onLoadFinished event doesn't fire.

options.preProcessMd

Type: Function Default value: function () { return through() }

A function that returns a through2 stream that transforms the markdown before it is converted to HTML.

options.preProcessHtml

Type: Function Default value: function () { return through() }

A function that returns a through2 stream that transforms the HTML before it is converted to PDF.

options.remarkable

Type: object Default value: { breaks: true }

A config object that is passed to remarkable, the underlying markdown parser.

options.remarkable.preset

Type: String Default value: default

Use remarkable presets as a convenience to quickly enable/disable active syntax rules and options for common use cases.

Supported values are default, commonmark and full

options.remarkable.plugins

Type: Array of remarkable-plugin Functions Default value: []

An array of Remarkable plugin functions, that extend the markdown parser functionality.

options.remarkable.syntax

Type: Array of optional remarkable syntax Stringss Default value: []

An array of optional Remarkable syntax extensions, disabled by default, that extend the markdown parser functionality.

API

from.path(path, opts) / from(path, opts)

Create a readable stream from path and pipe to markdown-pdf. path can be a single path or array of paths.

from.string(string)

Create a readable stream from string and pipe to markdown-pdf. string can be a single string or array of strings.

concat.from.paths(paths, opts)

Create and concatenate readable streams from paths and pipe to markdown-pdf.

concat.from.strings(strings, opts)

Create and concatenate readable streams from strings and pipe to markdown-pdf.

to.path(path, cb) / to(path, cb)

Create a writeable stream to path and pipe output from markdown-pdf to it. path can be a single path, or array of output paths if you specified an array of inputs. The callback function cb will be invoked when data has finished being written.

to.buffer(opts, cb)

Create a concat-stream and pipe output from markdown-pdf to it. The callback function cb will be invoked when the buffer has been created.

to.string(opts, cb)

Create a concat-stream and pipe output from markdown-pdf to it. The callback function cb will be invoked when the string has been created.

More examples

From string to path

var markdownpdf = require("markdown-pdf")

var md = "foo===\n* bar\n* baz\n\nLorem ipsum dolor sit"
  , outputPath = "/path/to/doc.pdf"

markdownpdf().from.string(md).to(outputPath, function () {
  console.log("Created", outputPath)
})

From multiple paths to multiple paths

var markdownpdf = require("markdown-pdf")

var mdDocs = ["home.md", "about.md", "contact.md"]
  , pdfDocs = mdDocs.map(function (d) { return "out/" + d.replace(".md", ".pdf") })

markdownpdf().from(mdDocs).to(pdfDocs, function () {
  pdfDocs.forEach(function (d) { console.log("Created", d) })
})

Concat from multiple paths to single path

var markdownpdf = require("markdown-pdf")

var mdDocs = ["chapter1.md", "chapter2.md", "chapter3.md"]
  , bookPath = "/path/to/book.pdf"

markdownpdf().concat.from(mdDocs).to(bookPath, function () {
  console.log("Created", bookPath)
})

Transform markdown before conversion

var markdownpdf = require("markdown-pdf")
  , split = require("split")
  , through = require("through")
  , duplexer = require("duplexer")

function preProcessMd () {
  // Split the input stream by lines
  var splitter = split()

  // Replace occurences of "foo" with "bar"
  var replacer = through(function (data) {
    this.queue(data.replace(/foo/g, "bar") + "\n")
  })

  splitter.pipe(replacer)
  return duplexer(splitter, replacer)
}

markdownpdf({preProcessMd: preProcessMd})
  .from("/path/to/document.md")
  .to("/path/to/document.pdf", function () { console.log("Done") })

Remarkable options and plugins

Example using remarkable-classy plugin:

var markdownpdf = require("markdown-pdf")

var options = {
    remarkable: {
        html: true,
        breaks: true,
        plugins: [ require('remarkable-classy') ],
		syntax: [ 'footnote', 'sup', 'sub' ]
    }
}

markdownpdf(options)
  .from("/path/to/document.md")
  .to("/path/to/document.pdf", function () { console.log("Done") })

Contribute

Feel free to dive in! Open an issue or submit PRs.

License

MIT © Alan Shaw