kramdown (1)

kramdown [options] [FILE ...]

kramdown is primarily used for parsing a superset of Markdown and converting it to different output formats. It supports standard Markdown (with some minor modifications) and various extensions like tables and definition lists. Due to its modular architecture it also allows other input formats than Markdown, for example, HTML or Github Flavored Markdown.

If FILE is not specified, kramdown reads from the standard input. The result is written to the standard output.

There are two sets of options that kramdown accepts: The first one includes the options that are used directly by the kramdown binary. The second set of options controls how kramdown parses and converts its input.

-i, --input ARG

Specify the input format. Available input formats: kramdown (this is the default), markdown, GFM or html.

-o, --output ARG

Specify one or more output formats separated by commas: html (default), kramdown, latex, pdf or remove_html_tags.

-v, --version

Show the version of kramdown.

-h, --help

Show the help.

--template ARG

The name of an ERB template file that should be used to wrap the output or the ERB template itself.

This is used to wrap the output in an environment so that the output can be used as a stand-alone document. For example, an HTML template would provide the needed header and body tags so that the whole output is a valid HTML file. If no template is specified, the output will be just the converted text.

When resolving the template file, the given template name is used first. If such a file is not found, the converter extension (the same as the converter name) is appended. If the file still cannot be found, the templates name is interpreted as a template name that is provided by kramdown (without the converter extension). If the file is still not found, the template name is checked if it starts with 'string://' and if it does, this prefix is removed and the rest is used as template content.

kramdown provides a default template named 'document' for each converter.

Default: '' Used by: all converters

--[no-]auto-ids

Use automatic header ID generation

If this option is `true`, ID values for all headers are automatically generated if no ID is explicitly specified.

Default: true Used by: HTML/Latex converter

--[no-]auto-id-stripping

Strip all formatting from header text for automatic ID generation

If this option is `true`, only the text elements of a header are used for generating the ID later (in contrast to just using the raw header text line).

This option will be removed in version 2.0 because this will be the default then.

Default: false Used by: kramdown parser

--auto-id-prefix ARG

Prefix used for automatically generated header IDs

This option can be used to set a prefix for the automatically generated header IDs so that there is no conflict when rendering multiple kramdown documents into one output file separately. The prefix should only contain characters that are valid in an ID!

Default: '' Used by: HTML/Latex converter

--[no-]transliterated-header-ids

Transliterate the header text before generating the ID

Only ASCII characters are used in headers IDs. This is not good for languages with many non-ASCII characters. By enabling this option the header text is transliterated to ASCII as good as possible so that the resulting header ID is more useful.

The stringex library needs to be installed for this feature to work!

Default: false Used by: HTML/Latex converter

--[no-]parse-block-html

Process kramdown syntax in block HTML tags

If this option is `true`, the kramdown parser processes the content of block HTML tags as text containing block-level elements. Since this is not wanted normally, the default is `false`. It is normally better to selectively enable kramdown processing via the markdown attribute.

Default: false Used by: kramdown parser

--[no-]parse-span-html

Process kramdown syntax in span HTML tags

If this option is `true`, the kramdown parser processes the content of span HTML tags as text containing span-level elements.

Default: true Used by: kramdown parser

--[no-]html-to-native

Convert HTML elements to native elements

If this option is `true`, the parser converts HTML elements to native elements. For example, when parsing `<em>hallo</em>` the emphasis tag would normally be converted to an `:html` element with tag type `:em`. If `html_to_native` is `true`, then the emphasis would be converted to a native `:em` element.

This is useful for converters that cannot deal with HTML elements.

Default: false Used by: kramdown parser

--link-defs ARG

Pre-defines link definitions

This option can be used to pre-define link definitions. The value needs to be a Hash where the keys are the link identifiers and the values are two element Arrays with the link URL and the link title.

If the value is a String, it has to contain a valid YAML hash and the hash has to follow the above guidelines.

Default: {} Used by: kramdown parser

--footnote-nr ARG

The number of the first footnote

This option can be used to specify the number that is used for the first footnote.

Default: 1 Used by: HTML converter

--[no-]enable-coderay

Use coderay for syntax highlighting

If this option is `true`, coderay is used by the HTML converter for syntax highlighting the content of code spans and code blocks.

Default: true Used by: HTML converter

--coderay-wrap ARG

Defines how the highlighted code should be wrapped

The possible values are :span, :div or nil.

Default: :div Used by: HTML converter

--coderay-line-numbers ARG

Defines how and if line numbers should be shown

The possible values are :table, :inline or nil. If this option is nil, no line numbers are shown.

Default: :inline Used by: HTML converter

--coderay-line-number-start ARG

The start value for the line numbers

Default: 1 Used by: HTML converter

--coderay-tab-width ARG

The tab width used in highlighted code

Used by: HTML converter

--coderay-bold-every ARG

Defines how often a line number should be made bold

Can either be an integer or false (to turn off bold line numbers completely).

Default: 10 Used by: HTML converter

--coderay-css ARG

Defines how the highlighted code gets styled

Possible values are :class (CSS classes are applied to the code elements, one must supply the needed CSS file) or :style (default CSS styles are directly applied to the code elements).

Default: style Used by: HTML converter

--coderay-default-lang ARG

Sets the default language for highlighting code blocks

If no language is set for a code block, the default language is used instead. The value has to be one of the languages supported by coderay or nil if no default language should be used.

Default: nil Used by: HTML converter

--entity-output ARG

Defines how entities are output

The possible values are :as_input (entities are output in the same form as found in the input), :numeric (entities are output in numeric form), :symbolic (entities are output in symbolic form if possible) or :as_char (entities are output as characters if possible, only available on Ruby 1.9).

Default: :as_char Used by: HTML converter, kramdown converter

--toc-levels ARG

Defines the levels that are used for the table of contents

The individual levels can be specified by separating them with commas (e.g. 1,2,3) or by using the range syntax (e.g. 1..3). Only the specified levels are used for the table of contents.

Default: 1..6 Used by: HTML/Latex converter

--line-width ARG

Defines the line width to be used when outputting a document

Default: 72 Used by: kramdown converter

--latex-headers ARG

Defines the LaTeX commands for different header levels

The commands for the header levels one to six can be specified by separating them with commas.

Default: section,subsection,subsubsection,paragraph,subparagraph,subparagraph Used by: Latex converter

--smart-quotes ARG

Defines the HTML entity names or code points for smart quote output

The entities identified by entity name or code point that should be used for, in order, a left single quote, a right single quote, a left double and a right double quote are specified by separating them with commas.

Default: lsquo,rsquo,ldquo,rdquo Used by: HTML/Latex converter

--[no-]remove-block-html-tags

Remove block HTML tags

If this option is `true`, the RemoveHtmlTags converter removes block HTML tags.

Default: true Used by: RemoveHtmlTags converter

--[no-]remove-span-html-tags

Remove span HTML tags

If this option is `true`, the RemoveHtmlTags converter removes span HTML tags.

Default: false Used by: RemoveHtmlTags converter

--header-offset ARG

Sets the output offset for headers

If this option is c (may also be negative) then a header with level n will be output as a header with level c+n. If c+n is lower than 1, level 1 will be used. If c+n is greater than 6, level 6 will be used.

Default: 0 Used by: HTML converter, Kramdown converter, Latex converter

--[no-]hard-wrap

Interprets line breaks literally

Insert HTML `<br />` tags inside paragraphs where the original Markdown document had newlines (by default, Markdown ignores these newlines).

Default: true Used by: GFM parser

The exit status is 0 if no error happened. Otherwise it is 1.

The kramdown website, http://kramdown.gettalong.org/ for more information, especially on the supported input syntax.

kramdown was written by Thomas Leitner <[email protected]>.

This manual page was written by Thomas Leitner <[email protected]>.