Run results for: Markdown Parsers

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36

Browser: Chrome 94

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Showdown	335.6 Ops/sec
Marked	930.2 Ops/sec
CommonMark	2615.3 Ops/sec
markdown-it	2140.7 Ops/sec
Remarkable	3539.8 Ops/sec
micromarkdown.js	2001.9 Ops/sec
Snarkdown	3680.6 Ops/sec
micro-down	1399.7 Ops/sec

HTML Preparation code:

<script type="text/javascript" src="https://unpkg.com/showdown@1.9.1/dist/showdown.min.js"></script>
<script type="text/javascript" src="https://unpkg.com/marked@3.0.7/marked.min.js"></script>
<script type="text/javascript" src="https://unpkg.com/commonmark@0.30.0/dist/commonmark.min.js"></script>
<script type="text/javascript" src="https://unpkg.com/markdown-it@12.2.0/dist/markdown-it.min.js"></script>
<script type="text/javascript" src="https://unpkg.com/remarkable@2.0.1/dist/remarkable.min.js"></script>
<script type="text/javascript" src="https://unpkg.com/micromarkdown@0.3.4-a/dist/micromarkdown.min.js"></script>
<script type="text/javascript" src="https://unpkg.com/snarkdown@2.0.0/dist/snarkdown.umd.js"></script>
<script type="text/javascript" src="https://unpkg.com/micro-down@1.6.2/dist/index.js"></script>

Script Preparation code:

var conv = {
    showdown: new showdown.Converter(),
    marked: marked,
    cm: new commonmark.HtmlRenderer(),
    mdit: markdownit({
        html: true
    }),
    remarkable: new remarkable.Remarkable(),
    micromarkdown: window.micromarkdown,
    snarkdown: window.snarkdown,
    microdown: microdown
};

var pars = {
    cm: new commonmark.Parser()
};

var md = [
    "# h1 Heading",
    "## h2 Heading",
    "### h3 Heading",
    "#### h4 Heading",
    "##### h5 Heading",
    "###### h6 Heading",
    "",
    "",
    "## Horizontal Rules",
    "",
    "___",
    "",
    "---",
    "",
    "***",
    "",
    "",
    "## Typographic replacements",
    "",
    "(c) (C) (r) (R) (tm) (TM) (p) (P) +-",
    "",
    "test.. test... test..... test?..... test!....",
    "",
    "!!!!!! ???? ,,  -- ---",
    "",
    "\"Smartypants, double quotes\" and 'single quotes'",
    "",
    "",
    "## Emphasis",
    "",
    "**This is bold text**",
    "",
    "__This is bold text__",
    "",
    "*This is italic text*",
    "",
    "_This is italic text_",
    "",
    "~~Strikethrough~~",
    "",
    "",
    "## Blockquotes",
    "",
    "> Blockquotes can also be nested...",
    ">> ...by using additional greater-than signs right next to each other...",
    "> > > ...or with spaces between arrows.",
    "",
    "",
    "## Lists",
    "",
    "Unordered",
    "",
    "+ Create a list by starting a line with `+`, `-`, or `*`",
    "+ Sub-lists are made by indenting 2 spaces:",
    "  - Marker character change forces new list start:",
    "    * Ac tristique libero volutpat at",
    "    + Facilisis in pretium nisl aliquet",
    "    - Nulla volutpat aliquam velit",
    "+ Very easy!",
    "",
    "Ordered",
    "",
    "1. Lorem ipsum dolor sit amet",
    "2. Consectetur adipiscing elit",
    "3. Integer molestie lorem at massa",
    "",
    "",
    "1. You can use sequential numbers...",
    "1. ...or keep all the numbers as `1.`",
    "",
    "Start numbering with offset:",
    "",
    "57. foo",
    "1. bar",
    "",
    "",
    "## Code",
    "",
    "Inline `code`",
    "",
    "Indented code",
    "",
    "    // Some comments",
    "    line 1 of code",
    "    line 2 of code",
    "    line 3 of code",
    "",
    "",
    "Block code \"fences\"",
    "",
    "```",
    "Sample text here...",
    "```",
    "",
    "Syntax highlighting",
    "",
    "``` js",
    "var foo = function (bar) {",
    "  return bar++;",
    "};",
    "",
    "console.log(foo(5));",
    "```",
    "",
    "",
    "## Tables",
    "",
    "| Option | Description |",
    "| ------ | ----------- |",
    "| data   | path to data files to supply the data that will be passed into templates. |",
    "| engine | engine to be used for processing templates. Handlebars is the default. |",
    "| ext    | extension to be used for dest files. |",
    "",
    "Right aligned columns",
    "",
    "| Option | Description |",
    "| ------:| -----------:|",
    "| data   | path to data files to supply the data that will be passed into templates. |",
    "| engine | engine to be used for processing templates. Handlebars is the default. |",
    "| ext    | extension to be used for dest files. |",
    "",
    "",
    "## Links",
    "",
    "[link text](http://dev.nodeca.com)",
    "",
    "[link with title](http://nodeca.github.io/pica/demo/ \"title text!\")",
    "",
    "Autoconverted link https://github.com/nodeca/pica (enable linkify to see)",
    "",
    "",
    "## Images",
    "",
    "![Minion](https://octodex.github.com/images/minion.png)",
    "![Stormtroopocat](https://octodex.github.com/images/stormtroopocat.jpg \"The Stormtroopocat\")",
    "",
    "Like links, Images also have a footnote style syntax",
    "",
    "![Alt text][id]",
    "",
    "With a reference later in the document defining the URL location:",
    "",
    "[id]: https://octodex.github.com/images/dojocat.jpg  \"The Dojocat\"",
    "# h1 Heading",
    "## h2 Heading",
    "### h3 Heading",
    "#### h4 Heading",
    "##### h5 Heading",
    "###### h6 Heading",
    "",
    "",
    "## Horizontal Rules",
    "",
    "___",
    "",
    "---",
    "",
    "***",
    "",
    "",
    "## Typographic replacements",
    "",
    "(c) (C) (r) (R) (tm) (TM) (p) (P) +-",
    "",
    "test.. test... test..... test?..... test!....",
    "",
    "!!!!!! ???? ,,  -- ---",
    "",
    "\"Smartypants, double quotes\" and 'single quotes'",
    "",
    "",
    "## Emphasis",
    "",
    "**This is bold text**",
    "",
    "__This is bold text__",
    "",
    "*This is italic text*",
    "",
    "_This is italic text_",
    "",
    "~~Strikethrough~~",
    "",
    "",
    "## Blockquotes",
    "",
    "> Blockquotes can also be nested...",
    ">> ...by using additional greater-than signs right next to each other...",
    "> > > ...or with spaces between arrows.",
    "",
    "",
    "## Lists",
    "",
    "Unordered",
    "",
    "+ Create a list by starting a line with `+`, `-`, or `*`",
    "+ Sub-lists are made by indenting 2 spaces:",
    "  - Marker character change forces new list start:",
    "    * Ac tristique libero volutpat at",
    "    + Facilisis in pretium nisl aliquet",
    "    - Nulla volutpat aliquam velit",
    "+ Very easy!",
    "",
    "Ordered",
    "",
    "1. Lorem ipsum dolor sit amet",
    "2. Consectetur adipiscing elit",
    "3. Integer molestie lorem at massa",
    "",
    "",
    "1. You can use sequential numbers...",
    "1. ...or keep all the numbers as `1.`",
    "",
    "Start numbering with offset:",
    "",
    "57. foo",
    "1. bar",
    "",
    "",
    "## Code",
    "",
    "Inline `code`",
    "",
    "Indented code",
    "",
    "    // Some comments",
    "    line 1 of code",
    "    line 2 of code",
    "    line 3 of code",
    "",
    "",
    "Block code \"fences\"",
    "",
    "```",
    "Sample text here...",
    "```",
    "",
    "Syntax highlighting",
    "",
    "``` js",
    "var foo = function (bar) {",
    "  return bar++;",
    "};",
    "",
    "console.log(foo(5));",
    "```",
    "",
    "",
    "## Tables",
    "",
    "| Option | Description |",
    "| ------ | ----------- |",
    "| data   | path to data files to supply the data that will be passed into templates. |",
    "| engine | engine to be used for processing templates. Handlebars is the default. |",
    "| ext    | extension to be used for dest files. |",
    "",
    "Right aligned columns",
    "",
    "| Option | Description |",
    "| ------:| -----------:|",
    "| data   | path to data files to supply the data that will be passed into templates. |",
    "| engine | engine to be used for processing templates. Handlebars is the default. |",
    "| ext    | extension to be used for dest files. |",
    "",
    "",
    "## Links",
    "",
    "[link text](http://dev.nodeca.com)",
    "",
    "[link with title](http://nodeca.github.io/pica/demo/ \"title text!\")",
    "",
    "Autoconverted link https://github.com/nodeca/pica (enable linkify to see)",
    "",
    "",
    "## Images",
    "",
    "![Minion](https://octodex.github.com/images/minion.png)",
    "![Stormtroopocat](https://octodex.github.com/images/stormtroopocat.jpg \"The Stormtroopocat\")",
    "",
    "Like links, Images also have a footnote style syntax",
    "",
    "![Alt text][id]",
    "",
    "With a reference later in the document defining the URL location:",
    "",
    "[id]: https://octodex.github.com/images/dojocat.jpg  \"The Dojocat\"",
    "# h1 Heading",
    "## h2 Heading",
    "### h3 Heading",
    "#### h4 Heading",
    "##### h5 Heading",
    "###### h6 Heading",
    "",
    "",
    "## Horizontal Rules",
    "",
    "___",
    "",
    "---",
    "",
    "***",
    "",
    "",
    "## Typographic replacements",
    "",
    "(c) (C) (r) (R) (tm) (TM) (p) (P) +-",
    "",
    "test.. test... test..... test?..... test!....",
    "",
    "!!!!!! ???? ,,  -- ---",
    "",
    "\"Smartypants, double quotes\" and 'single quotes'",
    "",
    "",
    "## Emphasis",
    "",
    "**This is bold text**",
    "",
    "__This is bold text__",
    "",
    "*This is italic text*",
    "",
    "_This is italic text_",
    "",
    "~~Strikethrough~~",
    "",
    "",
    "## Blockquotes",
    "",
    "> Blockquotes can also be nested...",
    ">> ...by using additional greater-than signs right next to each other...",
    "> > > ...or with spaces between arrows.",
    "",
    "",
    "## Lists",
    "",
    "Unordered",
    "",
    "+ Create a list by starting a line with `+`, `-`, or `*`",
    "+ Sub-lists are made by indenting 2 spaces:",
    "  - Marker character change forces new list start:",
    "    * Ac tristique libero volutpat at",
    "    + Facilisis in pretium nisl aliquet",
    "    - Nulla volutpat aliquam velit",
    "+ Very easy!",
    "",
    "Ordered",
    "",
    "1. Lorem ipsum dolor sit amet",
    "2. Consectetur adipiscing elit",
    "3. Integer molestie lorem at massa",
    "",
    "",
    "1. You can use sequential numbers...",
    "1. ...or keep all the numbers as `1.`",
    "",
    "Start numbering with offset:",
    "",
    "57. foo",
    "1. bar",
    "",
    "",
    "## Code",
    "",
    "Inline `code`",
    "",
    "Indented code",
    "",
    "    // Some comments",
    "    line 1 of code",
    "    line 2 of code",
    "    line 3 of code",
    "",
    "",
    "Block code \"fences\"",
    "",
    "```",
    "Sample text here...",
    "```",
    "",
    "Syntax highlighting",
    "",
    "``` js",
    "var foo = function (bar) {",
    "  return bar++;",
    "};",
    "",
    "console.log(foo(5));",
    "```",
    "",
    "",
    "## Tables",
    "",
    "| Option | Description |",
    "| ------ | ----------- |",
    "| data   | path to data files to supply the data that will be passed into templates. |",
    "| engine | engine to be used for processing templates. Handlebars is the default. |",
    "| ext    | extension to be used for dest files. |",
    "",
    "Right aligned columns",
    "",
    "| Option | Description |",
    "| ------:| -----------:|",
    "| data   | path to data files to supply the data that will be passed into templates. |",
    "| engine | engine to be used for processing templates. Handlebars is the default. |",
    "| ext    | extension to be used for dest files. |",
    "",
    "",
    "## Links",
    "",
    "[link text](http://dev.nodeca.com)",
    "",
    "[link with title](http://nodeca.github.io/pica/demo/ \"title text!\")",
    "",
    "Autoconverted link https://github.com/nodeca/pica (enable linkify to see)",
    "",
    "",
    "## Images",
    "",
    "![Minion](https://octodex.github.com/images/minion.png)",
    "![Stormtroopocat](https://octodex.github.com/images/stormtroopocat.jpg \"The Stormtroopocat\")",
    "",
    "Like links, Images also have a footnote style syntax",
    "",
    "![Alt text][id]",
    "",
    "With a reference later in the document defining the URL location:",
    "",
    "[id]: https://octodex.github.com/images/dojocat.jpg  \"The Dojocat\""
].join("\n");

Tests:

Showdown
conv.showdown.makeHtml(md);
Marked
conv.marked(md);
CommonMark
conv.cm.render(pars.cm.parse(md));
markdown-it
conv.mdit.render(md);
Remarkable
conv.remarkable.render(md);
micromarkdown.js
conv.micromarkdown.parse(md);
Snarkdown
conv.snarkdown(md);
micro-down
conv.microdown.parse(md);

Run results for: Markdown Parsers

Showdown

Marked

CommonMark

markdown-it

Remarkable

micromarkdown.js

Snarkdown

micro-down