Online Markdown To Pdf

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Just focus the window containing your markdown file and use the convert command (Packages Markdown PDF Convert). The output PDF will be styled similar to the markdown on github.com, as well as any user styles you have added. It will appear in the same directory as the Markdown you are converting, with the same name and a.pdf extension. R Markdown supports a reproducible workflow for dozens of static and dynamic output formats including HTML, PDF, MS Word, Beamer, HTML5 slides, Tufte-style handouts, books, dashboards, shiny applications, scientific articles, websites, and more. Either you've already heard of pandoc or if you have searched online for markdown to pdf or similar, you are sure to come across pandoc. Formatting text should be easy. Often, however, it's not. If you've ever opened a Word document in an earlier version of Word or in a different word processor app and then spent half an hour.

3.3 PDF document

To create a PDF document from R Markdown, you specify the pdf_document output format in the YAML metadata:

Within R Markdown documents that generate PDF output, you can use raw LaTeX, and even define LaTeX macros. See Pandoc’s documentation on the raw_tex extension for details.

Note that PDF output (including Beamer slides) requires an installation of LaTeX (see Chapter 1).

Online Markdown To Pdf

3.3.1 Table of contents

You can add a table of contents using the toc option and specify the depth of headers that it applies to using the toc_depth option. For example:

If the TOC depth is not explicitly specified, it defaults to 2 (meaning that all level 1 and 2 headers will be included in the TOC), while it defaults to 3 in html_document.

You can add section numbering to headers using the number_sections option:

If you are familiar with LaTeX, number_sections: true means section{}, and number_sections: false means section*{} for sections in LaTeX (it also applies to other levels of “sections” such as chapter{}, and subsection{}).

3.3.2 Figure options

Markdown To Pdf Online With Images

There are a number of options that affect the output of figures within PDF documents:

  • fig_width and fig_height can be used to control the default figure width and height (6.5x4.5 is used by default).

  • fig_crop controls whether the pdfcrop utility, if available in your system, is automatically applied to PDF figures (this is true by default).

    • If you are using TinyTeX as your LaTeX distribution, we recommend that you run tinytex::tlmgr_install('pdfcrop') to install the LaTeX package pdfcrop. You also have to make sure the system package ghostscript is available in your system for pdfcrop to work. For macOS users who have installed Homebrew, ghostscript can be installed via brew install ghostscript.

    • If your graphics device is postscript, we recommend that you disable this feature (see more info in the knitr issue #1365).

  • fig_caption controls whether figures are rendered with captions (this is true by default).

  • dev controls the graphics device used to render figures (defaults to pdf).

For example:

3.3.3 Data frame printing

You can enhance the default display of data frames via the df_print option. Valid values are presented in Table 3.3.

TABLE 3.3: The possible values of the df_print option for the pdf_document format.
OptionDescription
defaultCall the print.data.frame generic method
kableUse the knitr::kable() function
tibbleUse the tibble::print.tbl_df() function
A custom functionUse the function to create the table. See 3.1.6.2

For example:

3.3.4 Syntax highlighting

The highlight option specifies the syntax highlighting style. Its usage in pdf_document is the same as html_document (Section 3.1.4). For example:

3.3.5 LaTeX options

Many aspects of the LaTeX template used to create PDF documents can be customized using top-level YAML metadata (note that these options do not appear underneath the output section, but rather appear at the top level along with title, author, and so on). For example:

A few available metadata variables are displayed in Table 3.4 (consult the Pandoc manual for the full list):

TABLE 3.4: Available top-level YAML metadata variables for LaTeX output.
VariableDescription
langDocument language code
fontsizeFont size (e.g., 10pt, 11pt, or 12pt)
documentclassLaTeX document class (e.g., article)
classoptionOptions for documentclass (e.g., oneside)
geometryOptions for geometry class (e.g., margin=1in)
mainfont, sansfont, monofont, mathfontDocument fonts (works only with xelatex and lualatex)
linkcolor, urlcolor, citecolorColor for internal, external, and citation links

3.3.6 LaTeX packages for citations

By default, citations are processed through pandoc-citeproc, which works for all output formats. For PDF output, sometimes it is better to use LaTeX packages to process citations, such as natbib or biblatex. To use one of these packages, just set the option citation_package to be natbib or biblatex, e.g.

3.3.7 Advanced customization

3.3.7.1 LaTeX engine

By default, PDF documents are rendered using pdflatex. You can specify an alternate engine using the latex_engine option. Available engines are pdflatex, xelatex, and lualatex. For example:

The main reasons you may want to use xelatex or lualatex are: (1) They support Unicode better; (2) It is easier to make use of system fonts. See some posts on Stack Overflow for more detailed explanations, e.g., https://tex.stackexchange.com/q/3393/9128 and https://tex.stackexchange.com/q/36/9128.

3.3.7.2 Keeping intermediate TeX

R Markdown documents are converted to PDF by first converting to a TeX file and then calling the LaTeX engine to convert to PDF. By default, this TeX file is removed, however if you want to keep it (e.g., for an article submission), you can specify the keep_tex option. For example:

3.3.7.3 Includes

You can do more advanced customization of PDF output by including additional LaTeX directives and/or content or by replacing the core Pandoc template entirely. To include content in the document header or before/after the document body, you use the includes option as follows:

3.3.7.4 Custom templates

You can also replace the underlying Pandoc template using the template option:

Convert Markdown To Pdf Online

Consult the documentation on Pandoc templates for additional details on templates. You can also study the default LaTeX template as an example.

3.3.8 Other features

Similar to HTML documents, you can enable or disable certain Markdown extensions for generating PDF documents. See Section 3.1.10.4 for details. You can also pass more custom Pandoc arguments through the pandoc_args option (Section 3.1.10.5), and define shared options in _output.yml (Section 3.1.11).

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