Fully standards compliant
Hoedownpasses 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
Hoedownhas optional support for several (unofficial) Markdown extensions, such as non-strict emphasis, fenced code blocks, tables, autolinks, strikethrough and more.
Hoedownis 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
Hoedownhas been extensively security audited, and includes protection against all possible DOS attacks (stack overflows, out of memory situations, malformed Markdown syntax...).
We've worked very hard to make
Hoedownnever leak or crash under any input.
Hoedowndoesn'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.
Hoedownis 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
Hoedownis 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.
Hoedownis a zero-dependency library composed of some
.cfiles and their headers. No dependencies, no bullshit. Only standard C99 that builds everywhere.
Hoedowncomes 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.
Unicode character handling
Given that the Markdown spec makes no provision for Unicode character handling,
Hoedown takes a conservative approach towards deciding which extended characters trigger Markdown features:
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.