Add KaTeX to the config and demo

CHANGELOG.md

@@ -5,7 +5,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased](https://codeberg.org/daudix/duckquill/compare/v4.7.0...main)
+## [Unreleased](https://codeberg.org/daudix/duckquill/compare/v4.7.1...main)
+
+- Add optional LaTeX rendering using the KaTeX library.
 
 ## [4.7.1](https://codeberg.org/daudix/duckquill/compare/v4.7.0...v4.7.1) - 2024-08-28
 

config.toml

@@ -105,7 +105,12 @@ show_copy_button = true
 # Whether to show estimated read time in posts.
 # Calculated using the simple math: number of words ÷ words per minute.
 show_read_time = true
+#
 # words_per_minute = "200"
+#
+# Whether to enable the KaTeX library for rendering LaTeX.
+# Note: This will make your page significantly heavier.
+katex = true
 
 [extra.nav]
 # Whether to show the Atom/RSS feed button in the nav

content/demo/index.md

@@ -86,6 +86,14 @@ pre table td:nth-of-type(1) {
 
 ## Extra
 
+### KaTeX
+
+Duckquill can render LaTeX using the [KaTeX](https://katex.org) library. It can be enabled using the `extra.katex` config variable.
+
+$$\relax f(x) = \int_{-\infty}^\infty
+    \hat{f}(\xi)\,e^{2 \pi i \xi x}
+    \,d\xi$$
+
 ### Shortcodes
 
 Duckquill provides a few useful [shortcodes](https://www.getzola.org/documentation/content/shortcodes/) that simplify some tasks. They can be used on all pages.