diff --git a/examples/s-expr.rs b/examples/s-expr.rs
index ecee3eb5..dc1d2e52 100644
--- a/examples/s-expr.rs
+++ b/examples/s-expr.rs
@@ -86,6 +86,8 @@ fn dump(source: &str) -> io::Result<()> {
         .multiline_block_quotes(true)
         .math_dollars(true)
         .math_code(true)
+        .wikilinks_title_after_pipe(true)
+        .wikilinks_title_before_pipe(true)
         .build()
         .unwrap();
 
diff --git a/fuzz/fuzz_targets/all_options.rs b/fuzz/fuzz_targets/all_options.rs
index 6b2b6df8..af9ed045 100644
--- a/fuzz/fuzz_targets/all_options.rs
+++ b/fuzz/fuzz_targets/all_options.rs
@@ -23,7 +23,9 @@ fuzz_target!(|s: &str| {
     extension.math_code = true;
     extension.front_matter_delimiter = Some("---".to_string());
     extension.shortcodes = true;
-
+    extension.wikilinks_title_after_pipe = true;
+    extension.wikilinks_title_before_pipe = true;
+    
     let mut parse = ParseOptions::default();
     parse.smart = true;
     parse.default_info_string = Some("rust".to_string());
diff --git a/fuzz/fuzz_targets/quadratic.rs b/fuzz/fuzz_targets/quadratic.rs
index f7afb1b0..4fcbe47a 100644
--- a/fuzz/fuzz_targets/quadratic.rs
+++ b/fuzz/fuzz_targets/quadratic.rs
@@ -196,6 +196,8 @@ struct FuzzExtensionOptions {
     math_dollars: bool,
     math_code: bool,
     shortcodes: bool,
+    wikilinks_title_after_pipe: bool,
+    wikilinks_title_before_pipe: bool,
 }
 
 impl FuzzExtensionOptions {
@@ -213,6 +215,8 @@ impl FuzzExtensionOptions {
         extension.math_dollars = self.math_dollars;
         extension.math_code = self.math_code;
         extension.shortcodes = self.shortcodes;
+        extension.wikilinks_title_after_pipe = self.wikilinks_title_after_pipe;
+        extension.wikilinks_title_before_pipe = self.wikilinks_title_before_pipe;
         extension.front_matter_delimiter = None;
         extension.header_ids = None;
         extension
diff --git a/script/cibuild b/script/cibuild
index 503c7124..2df91085 100755
--- a/script/cibuild
+++ b/script/cibuild
@@ -40,6 +40,10 @@ python3 spec_tests.py --no-normalize --spec ../../../src/tests/fixtures/math_dol
   || failed=1
 python3 spec_tests.py --no-normalize --spec ../../../src/tests/fixtures/math_code.md "$PROGRAM_ARG -e math-code" \
   || failed=1
+python3 spec_tests.py --no-normalize --spec ../../../src/tests/fixtures/wikilinks_title_after_pipe.md "$PROGRAM_ARG -e wikilinks-title-after-pipe" \
+  || failed=1
+python3 spec_tests.py --no-normalize --spec ../../../src/tests/fixtures/wikilinks_title_before_pipe.md "$PROGRAM_ARG -e wikilinks-title-before-pipe" \
+  || failed=1
 
 python3 spec_tests.py --no-normalize --spec regression.txt "$PROGRAM_ARG" \
 	|| failed=1
diff --git a/src/cm.rs b/src/cm.rs
index 192d2aa2..9b8ba51b 100644
--- a/src/cm.rs
+++ b/src/cm.rs
@@ -2,7 +2,7 @@ use crate::ctype::{isalpha, isdigit, ispunct, isspace};
 use crate::nodes::TableAlignment;
 use crate::nodes::{
     AstNode, ListDelimType, ListType, NodeCodeBlock, NodeHeading, NodeHtmlBlock, NodeLink,
-    NodeMath, NodeTable, NodeValue,
+    NodeMath, NodeTable, NodeValue, NodeWikiLink,
 };
 #[cfg(feature = "shortcodes")]
 use crate::parser::shortcodes::NodeShortCode;
@@ -385,6 +385,7 @@ impl<'a, 'o> CommonMarkFormatter<'a, 'o> {
                 // noop - automatic escaping is already being done
             }
             NodeValue::Math(ref math) => self.format_math(math, allow_wrap, entering),
+            NodeValue::WikiLink(ref nl) => return self.format_wikilink(nl, entering),
         };
         true
     }
@@ -689,6 +690,24 @@ impl<'a, 'o> CommonMarkFormatter<'a, 'o> {
         true
     }
 
+    fn format_wikilink(&mut self, nl: &NodeWikiLink, entering: bool) -> bool {
+        if entering {
+            write!(self, "[[").unwrap();
+            if self.options.extension.wikilinks_title_after_pipe {
+                self.output(nl.url.as_bytes(), false, Escaping::Url);
+                write!(self, "|").unwrap();
+            }
+        } else {
+            if self.options.extension.wikilinks_title_before_pipe {
+                write!(self, "|").unwrap();
+                self.output(nl.url.as_bytes(), false, Escaping::Url);
+            }
+            write!(self, "]]").unwrap();
+        }
+
+        true
+    }
+
     fn format_image(&mut self, nl: &NodeLink, allow_wrap: bool, entering: bool) {
         if entering {
             write!(self, "![").unwrap();
diff --git a/src/html.rs b/src/html.rs
index c78a229b..025565d2 100644
--- a/src/html.rs
+++ b/src/html.rs
@@ -1038,6 +1038,21 @@ impl<'o> HtmlFormatter<'o> {
                     self.render_math_inline(node, literal, display_math, dollar_math)?;
                 }
             }
+            NodeValue::WikiLink(ref nl) => {
+                if entering {
+                    self.output.write_all(b"<a")?;
+                    self.render_sourcepos(node)?;
+                    self.output.write_all(b" href=\"")?;
+                    let url = nl.url.as_bytes();
+                    if self.options.render.unsafe_ || !dangerous_url(url) {
+                        self.escape_href(url)?;
+                    }
+                    self.output.write_all(b"\" data-wikilink=\"true")?;
+                    self.output.write_all(b"\">")?;
+                } else {
+                    self.output.write_all(b"</a>")?;
+                }
+            }
         }
         Ok(false)
     }
diff --git a/src/main.rs b/src/main.rs
index a259232b..3caebc9b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -159,6 +159,8 @@ enum Extension {
     MultilineBlockQuotes,
     MathDollars,
     MathCode,
+    WikilinksTitleAfterPipe,
+    WikilinksTitleBeforePipe,
 }
 
 #[derive(Clone, Copy, Debug, ValueEnum)]
@@ -238,6 +240,8 @@ fn main() -> Result<(), Box<dyn Error>> {
         .multiline_block_quotes(exts.contains(&Extension::MultilineBlockQuotes))
         .math_dollars(exts.contains(&Extension::MathDollars))
         .math_code(exts.contains(&Extension::MathCode))
+        .wikilinks_title_after_pipe(exts.contains(&Extension::WikilinksTitleAfterPipe))
+        .wikilinks_title_before_pipe(exts.contains(&Extension::WikilinksTitleBeforePipe))
         .front_matter_delimiter(cli.front_matter_delimiter);
 
     #[cfg(feature = "shortcodes")]
diff --git a/src/nodes.rs b/src/nodes.rs
index 0e073263..79bbfd7e 100644
--- a/src/nodes.rs
+++ b/src/nodes.rs
@@ -182,6 +182,9 @@ pub enum NodeValue {
 
     /// **Inline**.  A character that has been [escaped](https://github.github.com/gfm/#backslash-escapes)
     Escaped,
+
+    /// **Inline**.  A wikilink to some URL.
+    WikiLink(NodeWikiLink),
 }
 
 /// Alignment of a single table cell.
@@ -253,6 +256,13 @@ pub struct NodeLink {
     pub title: String,
 }
 
+/// The details of a wikilink's destination.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct NodeWikiLink {
+    /// The URL for the link destination.
+    pub url: String,
+}
+
 /// The metadata of a list; the kind of list, the delimiter used and so on.
 #[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
 pub struct NodeList {
@@ -489,6 +499,7 @@ impl NodeValue {
             NodeValue::MultilineBlockQuote(_) => "multiline_block_quote",
             NodeValue::Escaped => "escaped",
             NodeValue::Math(..) => "math",
+            NodeValue::WikiLink(..) => "wikilink",
         }
     }
 }
@@ -639,7 +650,8 @@ pub fn can_contain_type<'a>(node: &'a AstNode<'a>, child: &NodeValue) -> bool {
         | NodeValue::Emph
         | NodeValue::Strong
         | NodeValue::Link(..)
-        | NodeValue::Image(..) => !child.block(),
+        | NodeValue::Image(..)
+        | NodeValue::WikiLink(..) => !child.block(),
 
         NodeValue::Table(..) => matches!(*child, NodeValue::TableRow(..)),
 
@@ -657,6 +669,7 @@ pub fn can_contain_type<'a>(node: &'a AstNode<'a>, child: &NodeValue) -> bool {
                 | NodeValue::Strikethrough
                 | NodeValue::HtmlInline(..)
                 | NodeValue::Math(..)
+                | NodeValue::WikiLink(..)
         ),
 
         #[cfg(feature = "shortcodes")]
@@ -672,6 +685,7 @@ pub fn can_contain_type<'a>(node: &'a AstNode<'a>, child: &NodeValue) -> bool {
                 | NodeValue::Strikethrough
                 | NodeValue::HtmlInline(..)
                 | NodeValue::Math(..)
+                | NodeValue::WikiLink(..)
         ),
 
         NodeValue::MultilineBlockQuote(_) => {
diff --git a/src/parser/inlines.rs b/src/parser/inlines.rs
index c582b309..92c8a6ab 100644
--- a/src/parser/inlines.rs
+++ b/src/parser/inlines.rs
@@ -2,7 +2,8 @@ use crate::arena_tree::Node;
 use crate::ctype::{isdigit, ispunct, isspace};
 use crate::entity;
 use crate::nodes::{
-    Ast, AstNode, NodeCode, NodeFootnoteReference, NodeLink, NodeMath, NodeValue, Sourcepos,
+    Ast, AstNode, NodeCode, NodeFootnoteReference, NodeLink, NodeMath, NodeValue, NodeWikiLink,
+    Sourcepos,
 };
 #[cfg(feature = "shortcodes")]
 use crate::parser::shortcodes::NodeShortCode;
@@ -105,6 +106,12 @@ struct Bracket<'a> {
     bracket_after: bool,
 }
 
+#[derive(Clone, Copy)]
+struct WikilinkComponents<'i> {
+    url: &'i [u8],
+    link_label: Option<(&'i [u8], usize, usize)>,
+}
+
 impl<'a, 'r, 'o, 'd, 'i, 'c, 'subj> Subject<'a, 'r, 'o, 'd, 'i, 'c, 'subj> {
     pub fn new(
         arena: &'a Arena<AstNode<'a>>,
@@ -183,11 +190,30 @@ impl<'a, 'r, 'o, 'd, 'i, 'c, 'subj> Subject<'a, 'r, 'o, 'd, 'i, 'c, 'subj> {
             '.' => Some(self.handle_period()),
             '[' => {
                 self.pos += 1;
-                let inl =
-                    self.make_inline(NodeValue::Text("[".to_string()), self.pos - 1, self.pos - 1);
-                self.push_bracket(false, inl);
-                self.within_brackets = true;
-                Some(inl)
+
+                let mut wikilink_inl = None;
+
+                if (self.options.extension.wikilinks_title_after_pipe
+                    || self.options.extension.wikilinks_title_before_pipe)
+                    && !self.within_brackets
+                    && self.peek_char() == Some(&(b'['))
+                {
+                    wikilink_inl = self.handle_wikilink();
+                }
+
+                if wikilink_inl.is_none() {
+                    let inl = self.make_inline(
+                        NodeValue::Text("[".to_string()),
+                        self.pos - 1,
+                        self.pos - 1,
+                    );
+                    self.push_bracket(false, inl);
+                    self.within_brackets = true;
+
+                    Some(inl)
+                } else {
+                    wikilink_inl
+                }
             }
             ']' => {
                 self.within_brackets = false;
@@ -1548,6 +1574,127 @@ impl<'a, 'r, 'o, 'd, 'i, 'c, 'subj> Subject<'a, 'r, 'o, 'd, 'i, 'c, 'subj> {
         }
     }
 
+    // Handles wikilink syntax
+    //   [[link text|url]]
+    //   [[url|link text]]
+    pub fn handle_wikilink(&mut self) -> Option<&'a AstNode<'a>> {
+        let startpos = self.pos;
+        let component = self.wikilink_url_link_label()?;
+        let url_clean = strings::clean_url(component.url);
+        let (link_label, link_label_start_column, link_label_end_column) =
+            match component.link_label {
+                Some((label, sc, ec)) => (entity::unescape_html(label), sc, ec),
+                None => (
+                    entity::unescape_html(component.url),
+                    startpos + 1,
+                    self.pos - 3,
+                ),
+            };
+
+        let nl = NodeWikiLink {
+            url: String::from_utf8(url_clean).unwrap(),
+        };
+        let inl = self.make_inline(NodeValue::WikiLink(nl), startpos - 1, self.pos - 1);
+        inl.append(self.make_inline(
+            NodeValue::Text(String::from_utf8(link_label).unwrap()),
+            link_label_start_column,
+            link_label_end_column,
+        ));
+
+        Some(inl)
+    }
+
+    fn wikilink_url_link_label(&mut self) -> Option<WikilinkComponents<'i>> {
+        let left_startpos = self.pos;
+
+        if self.peek_char() != Some(&(b'[')) {
+            return None;
+        }
+
+        let found_left = self.wikilink_component();
+
+        if !found_left {
+            self.pos = left_startpos;
+            return None;
+        }
+
+        let left = strings::trim_slice(&self.input[left_startpos + 1..self.pos]);
+
+        if self.peek_char() == Some(&(b']')) && self.peek_char_n(1) == Some(&(b']')) {
+            self.pos += 2;
+            return Some(WikilinkComponents {
+                url: left,
+                link_label: None,
+            });
+        } else if self.peek_char() != Some(&(b'|')) {
+            self.pos = left_startpos;
+            return None;
+        }
+
+        let right_startpos = self.pos;
+        let found_right = self.wikilink_component();
+
+        if !found_right {
+            self.pos = left_startpos;
+            return None;
+        }
+
+        let right = strings::trim_slice(&self.input[right_startpos + 1..self.pos]);
+
+        if self.peek_char() == Some(&(b']')) && self.peek_char_n(1) == Some(&(b']')) {
+            self.pos += 2;
+
+            if self.options.extension.wikilinks_title_after_pipe {
+                Some(WikilinkComponents {
+                    url: left,
+                    link_label: Some((right, right_startpos + 1, self.pos - 3)),
+                })
+            } else {
+                Some(WikilinkComponents {
+                    url: right,
+                    link_label: Some((left, left_startpos + 1, right_startpos - 1)),
+                })
+            }
+        } else {
+            self.pos = left_startpos;
+            None
+        }
+    }
+
+    // Locates the edge of a wikilink component (link label or url), and sets the
+    // self.pos to it's end if it's found.
+    fn wikilink_component(&mut self) -> bool {
+        let startpos = self.pos;
+
+        if self.peek_char() != Some(&(b'[')) && self.peek_char() != Some(&(b'|')) {
+            return false;
+        }
+
+        self.pos += 1;
+
+        let mut length = 0;
+        let mut c = 0;
+        while unwrap_into_copy(self.peek_char(), &mut c) && c != b'[' && c != b']' && c != b'|' {
+            if c == b'\\' {
+                self.pos += 1;
+                length += 1;
+                if self.peek_char().map_or(false, |&c| ispunct(c)) {
+                    self.pos += 1;
+                    length += 1;
+                }
+            } else {
+                self.pos += 1;
+                length += 1;
+            }
+            if length > MAX_LINK_LABEL_LENGTH {
+                self.pos = startpos;
+                return false;
+            }
+        }
+
+        true
+    }
+
     pub fn spnl(&mut self) {
         self.skip_spaces();
         if self.skip_line_end() {
diff --git a/src/parser/mod.rs b/src/parser/mod.rs
index c5c10f4c..bddd69f5 100644
--- a/src/parser/mod.rs
+++ b/src/parser/mod.rs
@@ -423,6 +423,36 @@ pub struct ExtensionOptions {
     ///            "<p>Happy Friday! 😄</p>\n");
     /// ```
     pub shortcodes: bool,
+
+    /// Enables wikilinks using title after pipe syntax
+    ///
+    /// ```` md
+    /// [[url|link label]]
+    /// ````
+    ///
+    /// ```
+    /// # use comrak::{markdown_to_html, Options};
+    /// let mut options = Options::default();
+    /// options.extension.wikilinks_title_after_pipe = true;
+    /// assert_eq!(markdown_to_html("[[url|link label]]", &options),
+    ///            "<p><a href=\"url\" data-wikilink=\"true\">link label</a></p>\n");
+    /// ```
+    pub wikilinks_title_after_pipe: bool,
+
+    /// Enables wikilinks using title before pipe syntax
+    ///
+    /// ```` md
+    /// [[link label|url]]
+    /// ````
+    ///
+    /// ```
+    /// # use comrak::{markdown_to_html, Options};
+    /// let mut options = Options::default();
+    /// options.extension.wikilinks_title_before_pipe = true;
+    /// assert_eq!(markdown_to_html("[[link label|url]]", &options),
+    ///            "<p><a href=\"url\" data-wikilink=\"true\">link label</a></p>\n");
+    /// ```
+    pub wikilinks_title_before_pipe: bool,
 }
 
 #[non_exhaustive]
diff --git a/src/tests.rs b/src/tests.rs
index a3467bf9..986cc83c 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -25,6 +25,7 @@ mod superscript;
 mod table;
 mod tagfilter;
 mod tasklist;
+mod wikilinks;
 mod xml;
 
 #[track_caller]
@@ -141,6 +142,8 @@ macro_rules! html_opts {
                 math_code: true,
                 front_matter_delimiter: Some("---".to_string()),
                 shortcodes: true,
+                wikilinks_title_after_pipe: true,
+                wikilinks_title_before_pipe: true,
             },
             parse: $crate::ParseOptions {
                 smart: true,
diff --git a/src/tests/api.rs b/src/tests/api.rs
index f89125b7..16adef8d 100644
--- a/src/tests/api.rs
+++ b/src/tests/api.rs
@@ -50,6 +50,8 @@ fn exercise_full_api() {
     extension.front_matter_delimiter(None);
     #[cfg(feature = "shortcodes")]
     extension.shortcodes(true);
+    extension.wikilinks_title_after_pipe(true);
+    extension.wikilinks_title_before_pipe(true);
 
     let mut parse = ParseOptionsBuilder::default();
     parse.smart(false);
@@ -226,5 +228,8 @@ fn exercise_full_api() {
             let _: bool = math.dollar_math;
             let _: String = math.literal;
         }
+        nodes::NodeValue::WikiLink(nl) => {
+            let _: String = nl.url;
+        }
     }
 }
diff --git a/src/tests/commonmark.rs b/src/tests/commonmark.rs
index 3f297e02..6f2f5a48 100644
--- a/src/tests/commonmark.rs
+++ b/src/tests/commonmark.rs
@@ -55,3 +55,12 @@ fn math(markdown: &str, cm: &str) {
 
     commonmark(markdown, cm, Some(&options));
 }
+
+#[test_case("This [[url]] that", "This [[url|url]] that\n")]
+#[test_case("This [[url|link label]] that", "This [[url|link%20label]] that\n")]
+fn wikilinks(markdown: &str, cm: &str) {
+    let mut options = Options::default();
+    options.extension.wikilinks_title_before_pipe = true;
+
+    commonmark(markdown, cm, Some(&options));
+}
diff --git a/src/tests/fixtures/wikilinks_title_after_pipe.md b/src/tests/fixtures/wikilinks_title_after_pipe.md
new file mode 100644
index 00000000..7c645ccf
--- /dev/null
+++ b/src/tests/fixtures/wikilinks_title_after_pipe.md
@@ -0,0 +1,47 @@
+---
+title: Wikilinks
+based_on: https://github.com/jgm/commonmark-hs/blob/master/commonmark-extensions/test/wikilinks_title_after_pipe.md
+---
+
+# Wikilinks, title after pipe
+
+Wikilinks can have one of the following forms:
+
+    [[https://example.org]]
+    [[https://example.org|title]]
+    [[name of page]]
+    [[name of page|title]]
+
+With this version of wikilinks, the title comes after the pipe.
+
+```````````````````````````````` example
+[[https://example.org]]
+.
+<p><a href="https://example.org" data-wikilink="true">https://example.org</a></p>
+````````````````````````````````
+
+```````````````````````````````` example
+[[https://example.org|title]]
+.
+<p><a href="https://example.org" data-wikilink="true">title</a></p>
+````````````````````````````````
+
+```````````````````````````````` example
+[[Name of page]]
+.
+<p><a href="Name%20of%20page" data-wikilink="true">Name of page</a></p>
+````````````````````````````````
+
+```````````````````````````````` example
+[[Name of page|Title]]
+.
+<p><a href="Name%20of%20page" data-wikilink="true">Title</a></p>
+````````````````````````````````
+
+HTML entities are recognized both in the name of page and in the link title.
+
+```````````````````````````````` example
+[[Gesch&uuml;tztes Leerzeichen|&#xDC;ber &amp;nbsp;]]
+.
+<p><a href="Gesch%C3%BCtztes%20Leerzeichen" data-wikilink="true">Über &amp;nbsp;</a></p>
+````````````````````````````````
\ No newline at end of file
diff --git a/src/tests/fixtures/wikilinks_title_before_pipe.md b/src/tests/fixtures/wikilinks_title_before_pipe.md
new file mode 100644
index 00000000..e430380c
--- /dev/null
+++ b/src/tests/fixtures/wikilinks_title_before_pipe.md
@@ -0,0 +1,55 @@
+---
+title: Wikilinks
+based_on: https://github.com/jgm/commonmark-hs/blob/master/commonmark-extensions/test/wikilinks_title_before_pipe.md
+---
+
+# Wikilinks, title before pipe
+
+Wikilinks can have one of the following forms:
+
+    [[https://example.org]]
+    [[title|https://example.org]]
+    [[name of page]]
+    [[title|name of page]]
+
+With this version of wikilinks, the title comes before the pipe.
+
+```````````````````````````````` example
+[[https://example.org]]
+.
+<p><a href="https://example.org" data-wikilink="true">https://example.org</a></p>
+````````````````````````````````
+
+```````````````````````````````` example
+[[title|https://example.org]]
+.
+<p><a href="https://example.org" data-wikilink="true">title</a></p>
+````````````````````````````````
+
+```````````````````````````````` example
+[[Name of page]]
+.
+<p><a href="Name%20of%20page" data-wikilink="true">Name of page</a></p>
+````````````````````````````````
+
+```````````````````````````````` example
+[[Title|Name of page]]
+.
+<p><a href="Name%20of%20page" data-wikilink="true">Title</a></p>
+````````````````````````````````
+
+Regular links should still work!
+
+```````````````````````````````` example
+[Title](Name%20of%20page)
+.
+<p><a href="Name%20of%20page">Title</a></p>
+````````````````````````````````
+
+HTML entities are recognized both in the name of page and in the link title.
+
+```````````````````````````````` example
+[[&#xDC;ber &amp;nbsp;|Gesch&uuml;tztes Leerzeichen]]
+.
+<p><a href="Gesch%C3%BCtztes%20Leerzeichen" data-wikilink="true">Über &amp;nbsp;</a></p>
+````````````````````````````````
\ No newline at end of file
diff --git a/src/tests/wikilinks.rs b/src/tests/wikilinks.rs
new file mode 100644
index 00000000..6b0c94c3
--- /dev/null
+++ b/src/tests/wikilinks.rs
@@ -0,0 +1,213 @@
+use super::*;
+
+// html_opts! does a roundtrip check unless sourcepos is set.
+// These cases don't work roundtrip, because converting to commonmark
+// automatically escapes certain characters.
+#[test]
+fn wikilinks_does_not_unescape_html_entities_in_link_label() {
+    html_opts!(
+        [extension.wikilinks_title_after_pipe, render.sourcepos],
+        concat!("This is [[&lt;script&gt;alert(0)&lt;/script&gt;|a &lt;link]]",),
+        concat!("<p data-sourcepos=\"1:1-1:60\">This is <a data-sourcepos=\"1:9-1:60\" href=\"%3Cscript%3Ealert(0)%3C/script%3E\" data-wikilink=\"true\">a &lt;link</a></p>\n"),
+    );
+
+    html_opts!(
+        [extension.wikilinks_title_before_pipe, render.sourcepos],
+        concat!("This is [[a &lt;link|&lt;script&gt;alert(0)&lt;/script&gt;]]",),
+        concat!("<p data-sourcepos=\"1:1-1:60\">This is <a data-sourcepos=\"1:9-1:60\" href=\"%3Cscript%3Ealert(0)%3C/script%3E\" data-wikilink=\"true\">a &lt;link</a></p>\n"),
+    );
+}
+
+#[test]
+fn wikilinks_sanitizes_the_href_attribute_case_1() {
+    html_opts!(
+        [extension.wikilinks_title_after_pipe],
+        concat!("[[http:\'\"injected=attribute&gt;&lt;img/src=\"0\"onerror=\"alert(0)\"&gt;https://example.com|a]]",),
+        concat!("<p><a href=\"http:&#x27;%22injected=attribute%3E%3Cimg/src=%220%22onerror=%22alert(0)%22%3Ehttps://example.com\" data-wikilink=\"true\">a</a></p>\n"),
+    );
+
+    html_opts!(
+        [extension.wikilinks_title_before_pipe],
+        concat!("[[a|http:\'\"injected=attribute&gt;&lt;img/src=\"0\"onerror=\"alert(0)\"&gt;https://example.com]]",),
+        concat!("<p><a href=\"http:&#x27;%22injected=attribute%3E%3Cimg/src=%220%22onerror=%22alert(0)%22%3Ehttps://example.com\" data-wikilink=\"true\">a</a></p>\n"),
+    );
+}
+
+#[test]
+fn wikilinks_sanitizes_the_href_attribute_case_2() {
+    html_opts!(
+        [extension.wikilinks_title_after_pipe],
+        concat!("<i>[[\'\"&gt;&lt;svg&gt;&lt;i/class=gl-show-field-errors&gt;&lt;input/title=\"&lt;script&gt;alert(0)&lt;/script&gt;\"/&gt;&lt;/svg&gt;https://example.com|a]]",),
+        concat!("<p><!-- raw HTML omitted --><a href=\"&#x27;%22%3E%3Csvg%3E%3Ci/class=gl-show-field-errors%3E%3Cinput/title=%22%3Cscript%3Ealert(0)%3C/script%3E%22/%3E%3C/svg%3Ehttps://example.com\" data-wikilink=\"true\">a</a></p>\n"),
+    );
+
+    html_opts!(
+        [extension.wikilinks_title_before_pipe],
+        concat!("<i>[[a|\'\"&gt;&lt;svg&gt;&lt;i/class=gl-show-field-errors&gt;&lt;input/title=\"&lt;script&gt;alert(0)&lt;/script&gt;\"/&gt;&lt;/svg&gt;https://example.com]]",),
+        concat!("<p><!-- raw HTML omitted --><a href=\"&#x27;%22%3E%3Csvg%3E%3Ci/class=gl-show-field-errors%3E%3Cinput/title=%22%3Cscript%3Ealert(0)%3C/script%3E%22/%3E%3C/svg%3Ehttps://example.com\" data-wikilink=\"true\">a</a></p>\n"),
+    );
+}
+
+#[test]
+fn wikilinks_supercedes_relaxed_autolinks() {
+    html_opts!(
+        [
+            extension.wikilinks_title_after_pipe,
+            parse.relaxed_autolinks
+        ],
+        concat!("[[http://example.com]]",),
+        concat!(
+            "<p><a href=\"http://example.com\" data-wikilink=\"true\">http://example.com</a></p>\n"
+        ),
+    );
+
+    html_opts!(
+        [
+            extension.wikilinks_title_before_pipe,
+            parse.relaxed_autolinks
+        ],
+        concat!("[[http://example.com]]",),
+        concat!(
+            "<p><a href=\"http://example.com\" data-wikilink=\"true\">http://example.com</a></p>\n"
+        ),
+    );
+}
+
+#[test]
+fn wikilinks_only_url_in_tables() {
+    html_opts!(
+        [extension.wikilinks_title_after_pipe, extension.table],
+        concat!("| header  |\n", "| ------- |\n", "| [[url]] |\n",),
+        concat!(
+            "<table>\n",
+            "<thead>\n",
+            "<tr>\n",
+            "<th>header</th>\n",
+            "</tr>\n",
+            "</thead>\n",
+            "<tbody>\n",
+            "<tr>\n",
+            "<td><a href=\"url\" data-wikilink=\"true\">url</a></td>\n",
+            "</tr>\n",
+            "</tbody>\n",
+            "</table>\n",
+        ),
+    );
+
+    html_opts!(
+        [extension.wikilinks_title_before_pipe, extension.table],
+        concat!("| header  |\n", "| ------- |\n", "| [[url]] |\n",),
+        concat!(
+            "<table>\n",
+            "<thead>\n",
+            "<tr>\n",
+            "<th>header</th>\n",
+            "</tr>\n",
+            "</thead>\n",
+            "<tbody>\n",
+            "<tr>\n",
+            "<td><a href=\"url\" data-wikilink=\"true\">url</a></td>\n",
+            "</tr>\n",
+            "</tbody>\n",
+            "</table>\n",
+        ),
+    );
+}
+
+#[test]
+fn wikilinks_full_in_tables_not_supported() {
+    html_opts!(
+        [extension.wikilinks_title_after_pipe, extension.table],
+        concat!("| header  |\n", "| ------- |\n", "| [[url|link label]] |\n",),
+        concat!(
+            "<table>\n",
+            "<thead>\n",
+            "<tr>\n",
+            "<th>header</th>\n",
+            "</tr>\n",
+            "</thead>\n",
+            "<tbody>\n",
+            "<tr>\n",
+            "<td>[[url</td>\n",
+            "</tr>\n",
+            "</tbody>\n",
+            "</table>\n",
+        ),
+    );
+
+    html_opts!(
+        [extension.wikilinks_title_before_pipe, extension.table],
+        concat!("| header  |\n", "| ------- |\n", "| [[link label|url]] |\n",),
+        concat!(
+            "<table>\n",
+            "<thead>\n",
+            "<tr>\n",
+            "<th>header</th>\n",
+            "</tr>\n",
+            "</thead>\n",
+            "<tbody>\n",
+            "<tr>\n",
+            "<td>[[link label</td>\n",
+            "</tr>\n",
+            "</tbody>\n",
+            "</table>\n",
+        ),
+    );
+}
+
+#[test]
+fn wikilinks_exceeds_label_limit() {
+    let long_label = format!("[[{:b<1100}]]", "a");
+    let expected = format!("<p>{}</p>\n", long_label);
+
+    html_opts!(
+        [extension.wikilinks_title_after_pipe],
+        &long_label,
+        &expected,
+    );
+}
+
+#[test]
+fn sourcepos() {
+    assert_ast_match!(
+        [extension.wikilinks_title_after_pipe],
+        "This [[http://example.com|link label]] that\n",
+        (document (1:1-1:43) [
+            (paragraph (1:1-1:43) [
+                (text (1:1-1:5) "This ")
+                (wikilink (1:6-1:38) [
+                    (text (1:27-1:36) "link label")
+                ])
+                (text (1:39-1:43) " that")
+            ])
+        ])
+    );
+
+    assert_ast_match!(
+        [extension.wikilinks_title_before_pipe],
+        "This [[link label|http://example.com]] that\n",
+        (document (1:1-1:43) [
+            (paragraph (1:1-1:43) [
+                (text (1:1-1:5) "This ")
+                (wikilink (1:6-1:38) [
+                    (text (1:8-1:17) "link label")
+                ])
+                (text (1:39-1:43) " that")
+            ])
+        ])
+    );
+
+    assert_ast_match!(
+        [extension.wikilinks_title_before_pipe],
+        "This [[http://example.com]] that\n",
+        (document (1:1-1:32) [
+            (paragraph (1:1-1:32) [
+                (text (1:1-1:5) "This ")
+                (wikilink (1:6-1:27) [
+                    (text (1:8-1:25) "http://example.com")
+                ])
+                (text (1:28-1:32) " that")
+            ])
+        ])
+    );
+}
diff --git a/src/xml.rs b/src/xml.rs
index dd90ecf0..3d2e3ebd 100644
--- a/src/xml.rs
+++ b/src/xml.rs
@@ -273,6 +273,11 @@ impl<'o> XmlFormatter<'o> {
                     write!(self.output, "</{}", ast.value.xml_node_name())?;
                     was_literal = true;
                 }
+                NodeValue::WikiLink(ref nl) => {
+                    self.output.write_all(b" destination=\"")?;
+                    self.escape(nl.url.as_bytes())?;
+                    self.output.write_all(b"\"")?;
+                }
             }
 
             if node.first_child().is_some() {