hugo/docs/content/overview/configuration.md

---
aliases:
- /doc/configuration/
lastmod: 2015-12-08
date: 2013-07-01
linktitle: Configuration
menu:
  main:
    parent: getting started
next: /overview/source-directory
notoc: true
prev: /overview/usage
title: Configuring Hugo
weight: 40
---

The directory structure and templates provide the majority of the
configuration for a site. In fact, a config file isn't even needed for many
websites since the defaults follow commonly used patterns.

Hugo expects to find the config file in the root of the source directory and
will look there first for a `config.toml` file. If none is present, it will
then look for a `config.yaml` file, followed by a `config.json` file.

The config file is a site-wide config. The config file provides directions to
hugo on how to build the site as well as site-wide parameters and menus.

Site configuration can also be set as environment variables in your operating system. The command below will work on *nix systems and overrides the site title. Note that all the variable names must be prefixed with "HUGO_".

```bash
env HUGO_TITLE="Some Title" hugo
```

## Examples

The following is an example of a typical yaml config file:

    ---
    baseurl: "http://yoursite.example.com/"
    ...

The following is an example of a toml config file with some of the default values.
Values under `[params]` will populate the `.Site.Params` variable for use in templates:

    contentdir = "content"
    layoutdir = "layouts"
    publishdir = "public"
    builddrafts = false
    baseurl = "http://yoursite.example.com/"
    canonifyurls = true

    [taxonomies]
      category = "categories"
      tag = "tags"

    [params]
      description = "Tesla's Awesome Hugo Site"
      author = "Nikola Tesla"

Here is a yaml configuration file which sets a few more options:

    ---
    baseurl: "http://yoursite.example.com/"
    title: "Yoyodyne Widget Blogging"
    footnotereturnlinkcontents: "↩"
    permalinks:
      post: /:year/:month/:title/
    params:
      Subtitle: "Spinning the cogs in the widgets"
      AuthorName: "John Doe"
      GitHubUser: "spf13"
      ListOfFoo:
        - "foo1"
        - "foo2"
      SidebarRecentLimit: 5
    ...

## Configuration variables

Following is a list of Hugo-defined variables that you can configure and their current default values:

    ---
    archetypedir:               "archetype"
    # hostname (and path) to the root, e.g. http://spf13.com/
    baseURL:                    ""
    # include content marked as draft
    buildDrafts:                false
    # include content with publishdate in the future
    buildFuture:                false
    # include content already expired
    buildExpired:               false
    # enable this to make all relative URLs relative to content root. Note that this does not affect absolute URLs.
    relativeURLs:               false
    canonifyURLs:               false
    # config file (default is path/config.yaml|json|toml)
    config:                     "config.toml"
    contentdir:                 "content"
    dataDir:                    "data"
    defaultExtension:           "html"
    defaultLayout:              "post"
    disableLiveReload:          false
    # Do not build RSS files
    disableRSS:                 false
    # Do not build Sitemap file
    disableSitemap:             false
    # Build robots.txt file
    enableRobotsTXT:            false
    # Do not render 404 page
    disable404:                 false
    # Do not inject generator meta tag on homepage
    disableHugoGeneratorInject: false
    # edit new content with this editor, if provided
    editor:                     ""
    # Enable Emoji emoticons support for page content.
    # See www.emoji-cheat-sheet.com
    enableEmoji:				false
    footnoteAnchorPrefix:       ""
    footnoteReturnLinkContents: ""
    # google analytics tracking id
    googleAnalytics:            ""
    languageCode:               ""
    layoutdir:                  "layouts"
    # Enable Logging
    log:                        false
    # Log File path (if set, logging enabled automatically)
    logFile:                    ""
    # "yaml", "toml", "json"
    metaDataFormat:             "toml"
    newContentEditor:           ""
    # Don't sync modification time of files
    noTimes:                    false
    paginate:                   10
    paginatePath:               "page"
    permalinks:
    # Pluralize titles in lists using inflect
    pluralizeListTitles:        true
    # Preserve special characters in taxonomy names ("Gérard Depardieu" vs "Gerard Depardieu")
    preserveTaxonomyNames:      false
    # filesystem path to write files to
    publishdir:                 "public"
    # enables syntax guessing for code fences without specified language
    pygmentsCodeFencesGuessSyntax: false
    # color-codes for highlighting derived from this style
    pygmentsStyle:              "monokai"
    # true: use pygments-css or false: color-codes directly
    pygmentsUseClasses:         false
    # default sitemap configuration map
    sitemap:
    # filesystem path to read files relative from
    source:                     ""
    staticdir:                  "static"
    # display memory and timing of different steps of the program
    stepAnalysis:               false
    # theme to use (located by default in /themes/THEMENAME/)
    themesdir = "themes"
    theme:                      ""
    title:                      ""
    # if true, use /filename.html instead of /filename/
    uglyURLs:                   false
    # Do not make the url/path to lowercase
    disablePathToLower:         false
    # if true, auto-detect Chinese/Japanese/Korean Languages in the content. (.Summary and .WordCount can work properly in CJKLanguage)
    hasCJKLanguage:             false
    # verbose output
    verbose:                    false
    # verbose logging
    verboseLog:                 false
    # watch filesystem for changes and recreate as needed
    watch:                      true
    ---

## Ignore files on build

The following inside `config.toml` will ignore files ending with `.foo` and `.boo` when building with `hugo`:

```
ignoreFiles = [ "\\.foo$", "\\.boo$" ]
```

The above is a list of Regular Expressions, but note the escaping of the `\` to make TOML happy.



## Configure Blackfriday rendering

[Blackfriday](https://github.com/russross/blackfriday) is the [Markdown](http://daringfireball.net/projects/markdown/) rendering engine used in Hugo. The Blackfriday configuration in Hugo is mostly a set of sane defaults that should fit most use cases.

But Hugo does expose some options---as listed in the table below, matched with the corresponding flag in the Blackfriday source ([html.go](https://github.com/russross/blackfriday/blob/master/html.go) and [markdown.go](https://github.com/russross/blackfriday/blob/master/markdown.go)):

<table class="table table-bordered">
<thead>
<tr>
<th>Flag</th><th>Default</th><th>Blackfriday flag</th>
</tr>
</thead>

<tbody>
<tr>
<td><code><strong>smartypants</strong></code></td>
<td><code>true</code></td>
<td><code>HTML_USE_SMARTYPANTS</code></td>
</tr>
<tr>
<td class="purpose-title">Purpose:</td>
<td class="purpose-description" colspan="2">Enable/Disable smart punctuation substitutions such as smart quotes, smart dashes, etc.
May be fine-tuned with the <code>angledQuotes</code>, <code>fractions</code>, <code>smartDashes</code> and <code>latexDashes</code> flags below.</td>
</tr>

<tr>
<td><code><strong>angledQuotes</strong></code></td>
<td><code>false</code></td>
<td><code>HTML_SMARTYPANTS_ANGLED_QUOTES</code></td>
</tr>
<tr>
<td class="purpose-title">Purpose:</td>
<td class="purpose-description" colspan="2">Enable/Disable smart angled double quotes.<br>
<small><strong>Example:</strong>&nbsp;<code>"Hugo"</code> renders to «Hugo» instead of “Hugo”.</small></td>
</tr>

<tr>
<td><code><strong>fractions</strong></code></td>
<td><code>true</code></td>
<td><code>HTML_SMARTYPANTS_FRACTIONS</code></td>
</tr>
<tr>
<td class="purpose-title">Purpose:</td>
<td class="purpose-description" colspan="2">Enable/Disable smart fractions.<br>
<small><strong>Example:</strong>&nbsp;<code>5/12</code> renders to <sup>5</sup>&frasl;<sub>12</sub> (<code>&lt;sup&gt;5&lt;/sup&gt;&amp;frasl;&lt;sub&gt;12&lt;/sub&gt;</code>)<br>
<strong>Caveat:</strong> Even with <code>fractions = false</code>,
Blackfriday would still convert 1/2, 1/4 and 3/4 to ½&nbsp;(<code>&amp;frac12;</code>),
¼&nbsp;(<code>&amp;frac14;</code>) and ¾&nbsp;(<code>&amp;frac34;</code>) respectively,
but only these three.</small></td>
</tr>

<tr>
<td><code><strong>smartDashes</strong></code></td>
<td><code>true</code></td>
<td><code>HTML_SMARTYPANTS_DASHES</code></td>
</tr>
<tr>
<td class="purpose-title">Purpose:</td>
<td class="purpose-description" colspan="2">Enable/Disable smart dashes, i.e. turning hyphens into en&nbsp;dash or em&nbsp;dash.<br>
Its behavior can be modified with the <code>latexDashes</code> flag listed below.</td>
</tr>

<tr>
<td><code><strong>latexDashes</strong></code></td>
<td><code>true</code></td>
<td><code>HTML_SMARTYPANTS_LATEX_DASHES</code></td>
</tr>
<tr>
<td class="purpose-title">Purpose:</td>
<td class="purpose-description" colspan="2">Choose between LaTeX-style smart dashes and “conventional” smart dashes.<br>
<strong>If <code>true</code>,</strong> <code>--</code> is translated into “&ndash;” (<code>&amp;ndash;</code>), and <code>---</code> is translated into “&mdash;” (<code>&amp;mdash;</code>).<br>
<strong>If <code>false</code>,</strong> <code>--</code> is translated into “&mdash;” (<code>&amp;mdash;</code>), whereas a <em>spaced</em> single hyphen between two words is turned into an en&nbsp;dash, e.g.&nbsp;<code>12 June - 3 July</code> becomes <code>12 June &amp;ndash; 3 July</code>.</td>
</tr>

<tr style="height: 0.5em;"></tr>

<tr>
<td><code><strong>hrefTargetBlank</strong></code></td>
<td><code>false</code></td>
<td><code>HTML_HREF_TARGET_BLANK</code></td>
</tr>
<tr>
<td class="purpose-title">Purpose:</td>
<td class="purpose-description" colspan="2">Open external links in a new window/tab.</td>
</tr>

<tr>
<td><code><strong>plainIDAnchors</strong></code></td>
<td><code>true</code></td>
<td><code>FootnoteAnchorPrefix</code> and <code>HeaderIDSuffix</code></td>
</tr>
<tr>
<td class="purpose-title">Purpose:</td>
<td class="purpose-description" colspan="2">If <code>true</code>, then header and footnote IDs are generated without the document ID.<br>
<small><strong>Example:</strong>&nbsp;<code>#my-header</code> instead of <code>#my-header:bec3ed8ba720b9073ab75abcf3ba5d97</code>.</small></td>
</tr>

<tr style="height: 0.5em;"></tr>

<tr>
<td><code><strong>extensions</strong></code></td>
<td><code>[]</code></td>
<td><code>EXTENSION_*</code></td>
</tr>
<tr>
<td class="purpose-title">Purpose:</td>
<td class="purpose-description" colspan="2">Use non-default additional extensions.<br>
<small><strong>Example:</strong>&nbsp;Add <code>"hardLineBreak"</code> to use <code>EXTENSION_HARD_LINE_BREAK</code>.</small></td>
</tr>

<tr>
<td><code><strong>extensionsmask</strong></code></td>
<td><code>[]</code></td>
<td><code>EXTENSION_*</code></td>
</tr>
<tr>
<td class="purpose-title">Purpose:</td>
<td class="purpose-description" colspan="2">Extensions in this option won't be loaded.<br>
<small><strong>Example:</strong>&nbsp;Add <code>"autoHeaderIds"</code> to disable <code>EXTENSION_AUTO_HEADER_IDS</code>.</small></td>
</tr>

<tr>
<td><code><strong>sourceRelativeLinksEval</strong></code></td>
<td><code>false</code></td>
<td><code>none</code></td>
</tr>
<tr>
<td class="purpose-title">Purpose:</td>
<td class="purpose-description" colspan="2">Source file based relative linking (a la Github).<br>
Relative links to markdown and static files within a page will be evaluated relative to the
location of that page, and then converted to html links during rendering. For example,
`[example](../other/page.md)` in `content/total/overview.md` will be linked to
`content/other/overview.md`, and then rendered to `/other/overview/` in the HTML output.
</td>
</tr>

<tr>
<td><code><strong>sourceRelativeLinksProjectFolder</strong></code></td>
<td><code>"/docs/content"</code></td>
<td><code>none</code></td>
</tr>
<tr>
<td class="purpose-title">Purpose:</td>
<td class="purpose-description" colspan="2">Source file based relative linking Hugo Project sub-folder.<br>
When `sourceRelativeLinksEval` is enabled, source level paths may contain an absolute respository path to the
markdown or static file which needs to be removed before trying to match it with the intended link.
 For example, if your documentation is in `/docs/content`, then
`[example](/docs/content/other/page.md)` in `/docs/content/total/overview.md` will be linked to
`/docs/content/other/overview.md`, and then rendered to `/other/overview/` in the HTML output.
</td>
</tr>

</tbody>
</table>


**Notes**

1. These flags are **very case-sensitive** (as of Hugo v0.15)!
2. These flags must be grouped under the `blackfriday` key and can be set on **both site and page level**. If set on page, it will override the site setting.  Example:

<table class="table">
<thead>
<tr>
<th>TOML</th><th>YAML</th>
</tr>
</thead>
<tbody>
<tr style="vertical-align: top;">
<td style="width: 50%;"><pre><code>[blackfriday]
  angledQuotes = true
  fractions = false
  plainIDAnchors = true
  extensions = ["hardLineBreak"]
</code></pre></td>
<td><pre><code>blackfriday:
  angledQuotes: true
  fractions: false
  plainIDAnchors: true
  extensions:
    - hardLineBreak
</code></pre></td>
</tr>
</tbody>
</table>