Fully standards compliant
Hoedown passes out of the box the official Markdown v1.0.0 and v1.0.3
test suites, and has been extensively tested with additional corner cases
to make sure its output is as sane as possible at all times.
Massive extension support
Hoedown has optional support for several (unofficial) Markdown extensions,
such as non-strict emphasis, fenced code blocks, tables, autolinks,
strikethrough and more.
Hoedown is fully UTF-8 aware, both when parsing the source document and when
generating the resulting (X)HTML code.
Tested & Ready to be used on production
Hoedown has been extensively security audited, and includes protection against
all possible DOS attacks (stack overflows, out of memory situations, malformed
We've worked very hard to make
Hoedown never leak or crash under any input.
Hoedown doesn't validate or post-process the HTML in Markdown documents.
Unless you use
HTML_SKIP, you should strongly consider using a
good post-processor in conjunction with Hoedown to prevent client-side attacks.
Hoedown is not stuck with XHTML output: the Markdown parser of the library
is decoupled from the renderer, so it's trivial to extend the library with
custom renderers. A fully functional (X)HTML renderer is included.
Optimized for speed
Hoedown is written in C, with a special emphasis on performance. When wrapped
on a dynamic language such as Python or Ruby, it has shown to be up to 40
times faster than other native alternatives.
Hoedown is a zero-dependency library composed of some
.c files and their
headers. No dependencies, no bullshit. Only standard C99 that builds everywhere.
Hoedown comes with a fully functional implementation of SmartyPants,
a separate autolinker, escaping utilities, buffers and stacks.
Hoedown is all about security. If you find a (potential) security vulnerability in the
library, or a way to make it crash through malicious input, please report it to us by
emailing the private Hoedown Security
mailing list. The
Hoedown security team will review the vulnerability and work with you
to reproduce and resolve it.
Given that the Markdown spec makes no provision for Unicode character handling,
takes a conservative approach towards deciding which extended characters trigger Markdown
Punctuation characters outside of the U+007F codepoint are not handled as punctuation. They are considered as normal, in-word characters for word-boundary checks.
Whitespace characters outside of the U+007F codepoint are not considered as whitespace. They are considered as normal, in-word characters for word-boundary checks.
make will build
Hoedown into a dynamic library and create the
smartypants executables, which are command-line tools to render Markdown to HTML
and perform SmartyPants, respectively.
If you are using CocoaPods, just add the line
pod 'hoedown' to your Podfile and call
Or, if you prefer, you can just throw the files at
src into your project.