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+---
+title: Configure Markup
+description: How to handle Markdown and other markup related configuration.
+date: 2019-11-15
+categories: [getting started,fundamentals]
+keywords: [configuration,highlighting]
+weight: 65
+sections_weight: 65
+slug: configuration-markup
+toc: true
+---
+
+## Configure Markup
+
+{{< new-in "0.60.0" >}}
+
+See [Goldmark](#goldmark) for settings related to the default Markdown handler in Hugo.
+
+Below are all markup related configuration in Hugo with their default settings:
+
+{{< code-toggle config="markup" />}}
+
+**See each section below for details.**
+
+### Goldmark
+
+[Goldmark](https://github.com/yuin/goldmark/) is from Hugo 0.60 the default library used for Markdown. It's fast, it's [CommonMark](https://spec.commonmark.org/0.29/) compliant and it's very flexible. Note that the feature set of Goldmark vs Blackfriday isn't the same; you gain a lot but also lose some, but we will work to bridge any gap in the upcoming Hugo versions.
+
+This is the default configuration:
+
+{{< code-toggle config="markup.goldmark" />}}
+
+For details on the extensions, refer to [this section](https://github.com/yuin/goldmark/#built-in-extensions) of the Goldmark documentation
+
+Some settings explained:
+
+unsafe
+: By default, Goldmark does not render raw HTMLs and potentially dangerous links. If you have lots of inline HTML and/or JavaScript, you may need to turn this on.
+
+typographer
+: This extension substitutes punctuations with typographic entities like [smartypants](https://daringfireball.net/projects/smartypants/).
+
+attribute
+: Enable custom attribute support for titles and blocks by adding attribute lists inside single curly brackets (`{.myclass class="class1 class2" }`) and placing it _after the Markdown element it decorates_, on the same line for titles and on a new line directly below for blocks.
+
+{{< new-in "0.81.0" >}} In Hugo 0.81.0 we added support for adding attributes (e.g. CSS classes) to Markdown blocks, e.g. tables, lists, paragraphs etc.
+
+A blockquote with a CSS class:
+
+```md
+> foo
+> bar
+{.myclass}
+```
+
+There are some current limitations: For tables you can currently only apply it to the full table, and for lists the `ul`/`ol`-nodes only, e.g.:
+
+```md
+* Fruit
+  * Apple
+  * Orange
+  * Banana
+  {.fruits}
+* Dairy
+  * Milk
+  * Cheese
+  {.dairies}
+{.list}
+```
+
+Note that attributes in [code fences](/content-management/syntax-highlighting/#highlighting-in-code-fences) must come after the opening tag, with any other highlighting processing instruction, e.g.:
+
+````
+```go {.myclass linenos=table,hl_lines=[8,"15-17"],linenostart=199}
+// ... code
+```
+````
+
+autoHeadingIDType ("github") {{< new-in "0.62.2" >}}
+: The strategy used for creating auto IDs (anchor names). Available types are `github`, `github-ascii` and `blackfriday`. `github` produces GitHub-compatible IDs, `github-ascii` will drop any non-Ascii characters after accent normalization, and `blackfriday` will make the IDs work as with [Blackfriday](#blackfriday), the default Markdown engine before Hugo 0.60. Note that if Goldmark is your default Markdown engine, this is also the strategy used in the [anchorize](/functions/anchorize/) template func.
+
+### Blackfriday
+
+
+[Blackfriday](https://github.com/russross/blackfriday) was Hugo's default Markdown rendering engine, now replaced with Goldmark. But you can still use it: Just set `defaultMarkdownHandler` to `blackfriday` in your top level `markup` config.
+
+This is the default config:
+
+{{< code-toggle config="markup.blackFriday" />}}
+
+### Highlight
+
+This is the default `highlight` configuration. Note that some of these settings can be set per code block, see [Syntax Highlighting](/content-management/syntax-highlighting/).
+
+{{< code-toggle config="markup.highlight" />}}
+
+For `style`, see these galleries:
+
+* [Short snippets](https://xyproto.github.io/splash/docs/all.html)
+* [Long snippets](https://xyproto.github.io/splash/docs/longer/all.html)
+
+For CSS, see [Generate Syntax Highlighter CSS](/content-management/syntax-highlighting/#generate-syntax-highlighter-css).
+
+### Table Of Contents
+
+{{< code-toggle config="markup.tableOfContents" />}}
+
+These settings only works for the Goldmark renderer:
+
+startLevel
+: The heading level, values starting at 1 (`h1`), to start render the table of contents.
+
+endLevel
+: The heading level, inclusive, to stop render the table of contents.
+
+ordered
+: Whether or not to generate an ordered list instead of an unordered list.
+
+
+## Markdown Render Hooks
+
+See [Markdown Render Hooks](/templates/render-hooks/).
+