diff --git a/README.md b/README.md
index 0f6d9a4..faa237b 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ This is the output of `example.qmd` for:
 - [HTML](https://m.canouil.dev/quarto-highlight-text/)
 - [Typst/PDF](https://m.canouil.dev/quarto-highlight-text/highlight-typst.pdf)
 - [LaTeX/PDF](https://m.canouil.dev/quarto-highlight-text/highlight-latex.pdf)
-- [Word/Docx](https://m.canouil.dev/quarto-highlight-text/highlight-openxml.docx)
+- [Word/Docx](https://m.canouil.dev/quarto-highlight-text/highlight-openxml.docx) (**only supports plain text, *i.e.*, no URLs**)
 - [Reveal.js](https://m.canouil.dev/quarto-highlight-text/highlight-revealjs.html)
 - [Beamer/PDF](https://m.canouil.dev/quarto-highlight-text/highlight-beamer.pdf)
-- [PowerPoint/Pptx](https://m.canouil.dev/quarto-highlight-text/highlight-pptx.pptx) (*not supported yet*)
+- [PowerPoint/Pptx](https://m.canouil.dev/quarto-highlight-text/highlight-pptx.pptx) (**only supports plain text, *i.e.*, no URLs**)
diff --git a/_extensions/highlight-text/highlight-text.lua b/_extensions/highlight-text/highlight-text.lua
index 8c736b0..74020e5 100644
--- a/_extensions/highlight-text/highlight-text.lua
+++ b/_extensions/highlight-text/highlight-text.lua
@@ -69,7 +69,7 @@ local function highlight_latex(span, colour, bg_colour)
   return span.content
 end
 
-local function highlight_openxml(span, colour, bg_colour)
+local function highlight_openxml_docx(span, colour, bg_colour)
   local spec = '<w:r><w:rPr>'
   if bg_colour ~= nil then
     spec = spec .. '<w:shd w:val="clear" w:fill="' .. bg_colour:gsub("^#", "") .. '"/>'
@@ -85,6 +85,27 @@ local function highlight_openxml(span, colour, bg_colour)
   return span.content
 end
 
+local function highlight_openxml_pptx(span, colour, bg_colour)
+  local spec = '<a:r><a:rPr dirty="0">'
+  if bg_colour ~= nil then
+    spec = spec .. '<a:highlight><a:srgbClr val="' .. bg_colour:gsub("^#", "") .. '" /></a:highlight>'
+  end
+  if colour ~= nil then
+    spec = spec .. '<a:solidFill><a:srgbClr val="' .. colour:gsub("^#", "") .. '" /></a:solidFill>'
+  end
+  spec = spec .. '</a:rPr><a:t>'
+
+  -- table.insert(span.content, 1, pandoc.RawInline('openxml', spec))
+  -- table.insert(span.content, pandoc.RawInline('openxml', '</a:t></a:r>'))
+
+  local span_content_string = ""
+  for i, inline in ipairs(span.content) do
+    span_content_string = span_content_string .. pandoc.utils.stringify(inline)
+  end
+
+  return pandoc.RawInline('openxml', spec .. span_content_string .. '</a:t></a:r>')
+end
+
 local function highlight_typst(span, colour, bg_colour)
   if colour == nil then
     colour_open = ''
@@ -132,9 +153,9 @@ function Span(span)
   elseif FORMAT:match 'latex' or FORMAT:match 'beamer' then
     return highlight_latex(span, colour, bg_colour)
   elseif FORMAT:match 'docx' then
-    return highlight_openxml(span, colour, bg_colour)
+    return highlight_openxml_docx(span, colour, bg_colour)
   elseif FORMAT:match 'pptx' then
-    return span -- Not implemented/supported
+    return highlight_openxml_pptx(span, colour, bg_colour)
   elseif FORMAT:match 'typst' then
     return highlight_typst(span, colour, bg_colour)
   else
diff --git a/example.qmd b/example.qmd
index df6b97c..b3e9a06 100644
--- a/example.qmd
+++ b/example.qmd
@@ -5,14 +5,23 @@ format:
     output-file: index
   typst:
     output-file: highlight-typst
+    papersize: a4
+    margin:
+      x: 2.5cm
+      y: 2.5cm
   pdf:
     output-file: highlight-latex
+    papersize: a4
+    margin:
+      x: 2.5cm
+      y: 2.5cm
   docx:
     output-file: highlight-docx
   revealjs:
     output-file: highlight-revealjs
   beamer:
     output-file: highlight-beamer
+    aspectratio: 169
   pptx:
     output-file: highlight-pptx
 format-links: true
@@ -45,68 +54,40 @@ filters:
 
 Then you can use the span syntax markup to highlight text in your document.
 
-::: {.content-hidden when-format="pptx"}
-:::: {layout-ncol="2"}
-::::: {#UK}
 ```markdown
-[Red text]{colour="#b22222"}
+[Text]{colour="#FFFFFF" bg-colour="#b22222"}
+[Text]{color="#FFFFFF" bg-color="#b22222"}
 ```
 
-[Red text]{colour="#b22222"}
+## Font Colour
 
 ```markdown
-[Red background]{bg-colour="#b22222"}
-```
-
-[Red background]{bg-colour="#b22222"}
-
-```markdown
-[White text, Red background]{
-  colour="#FFFFFF" bg-colour="#b22222"
-}
+[Red text]{colour="#b22222"}
 ```
 
-[White text, Red background]{colour="#FFFFFF" bg-colour="#b22222"}
-:::::
+[Red text]{colour="#b22222"}
 
-::::: {#US}
 ```markdown
 [Blue text]{color="#0000FF"}
 ```
 
 [Blue text]{color="#0000FF"}
 
-```markdown
-[Blue background]{bg-color="#0000FF"}
-```
-
-[Blue background]{bg-color="#0000FF"}
+## Background Colour
 
 ```markdown
-[White text, Blue background]{
-  color="#FFFFFF" bg-color="#0000FF"
-}
+[Red background]{bg-colour="#b22222"}
 ```
 
-[White text, Blue background]{color="#FFFFFF" bg-color="#0000FF"}
-:::::
-::::
-:::
+[Red background]{bg-colour="#b22222"}
 
-::: {.content-visible when-format="pptx"}
-:::: {.columns}
-::::: {.column width="50%"}
 ```markdown
-[Red text]{colour="#b22222"}
+[Blue background]{bg-color="#0000FF"}
 ```
 
-[Red text]{colour="#b22222"}
-
-```markdown
-[Red background]{bg-colour="#b22222"}
-```
+[Blue background]{bg-color="#0000FF"}
 
-[Red background]{bg-colour="#b22222"}
+## Font and Background Colour {.smaller}
 
 ```markdown
 [White text, Red background]{
@@ -115,28 +96,23 @@ Then you can use the span syntax markup to highlight text in your document.
 ```
 
 [White text, Red background]{colour="#FFFFFF" bg-colour="#b22222"}
-:::::
 
-::::: {.column width="50%"}
 ```markdown
-[Blue text]{color="#0000FF"}
+[White text, Blue background]{
+  color="#FFFFFF" bg-color="#0000FF"
+}
 ```
 
-[Blue text]{color="#0000FF"}
-
-```markdown
-[Blue background]{bg-color="#0000FF"}
-```
+[White text, Blue background]{color="#FFFFFF" bg-color="#0000FF"}
 
-[Blue background]{bg-color="#0000FF"}
+## More Examples {.smaller}
 
 ```markdown
-[White text, Blue background]{
-  color="#FFFFFF" bg-color="#0000FF"
+[text [with a link](https://quarto.org/)]{
+  color="#FFFFFF" bg-color="#00FFFF"
 }
 ```
 
-[White text, Blue background]{color="#FFFFFF" bg-color="#0000FF"}
-:::::
-::::
-:::
+[text [with a link](https://quarto.org/)]{
+  color="#FFFFFF" bg-color="#00FFFF"
+}