diff --git a/quartz/plugins/emitters/contentIndex.ts b/quartz/plugins/emitters/contentIndex.ts
index 1d0af6d7e..f24ae6dc1 100644
--- a/quartz/plugins/emitters/contentIndex.ts
+++ b/quartz/plugins/emitters/contentIndex.ts
@@ -1,5 +1,6 @@
 import { GlobalConfiguration } from "../../cfg"
 import { getDate } from "../../components/Date"
+import { escapeHTML } from "../../util/escape"
 import { FilePath, FullSlug, SimpleSlug, simplifySlug } from "../../util/path"
 import { QuartzEmitterPlugin } from "../types"
 import path from "path"
@@ -29,7 +30,7 @@ const defaultOptions: Options = {
 function generateSiteMap(cfg: GlobalConfiguration, idx: ContentIndex): string {
   const base = cfg.baseUrl ?? ""
   const createURLEntry = (slug: SimpleSlug, content: ContentDetails): string => `<url>
-    <loc>https://${base}/${encodeURIComponent(slug)}</loc>
+    <loc>https://${base}/${encodeURI(slug)}</loc>
     <lastmod>${content.date?.toISOString()}</lastmod>
   </url>`
   const urls = Array.from(idx)
@@ -43,9 +44,9 @@ function generateRSSFeed(cfg: GlobalConfiguration, idx: ContentIndex): string {
   const root = `https://${base}`
 
   const createURLEntry = (slug: SimpleSlug, content: ContentDetails): string => `<item>
-    <title>${content.title}</title>
-    <link>${root}/${encodeURIComponent(slug)}</link>
-    <guid>${root}/${encodeURIComponent(slug)}</guid>
+    <title>${escapeHTML(content.title)}</title>
+    <link>${root}/${encodeURI(slug)}</link>
+    <guid>${root}/${encodeURI(slug)}</guid>
     <description>${content.description}</description>
     <pubDate>${content.date?.toUTCString()}</pubDate>
   </item>`
@@ -56,7 +57,7 @@ function generateRSSFeed(cfg: GlobalConfiguration, idx: ContentIndex): string {
   return `<?xml version="1.0" encoding="UTF-8" ?>
 <rss version="2.0">
     <channel>
-      <title>${cfg.pageTitle}</title>
+      <title>${escapeHTML(cfg.pageTitle)}</title>
       <link>${root}</link>
       <description>Recent content on ${cfg.pageTitle}</description>
       <generator>Quartz -- quartz.jzhao.xyz</generator>
diff --git a/quartz/plugins/transformers/description.ts b/quartz/plugins/transformers/description.ts
index 08af5c788..884d5b189 100644
--- a/quartz/plugins/transformers/description.ts
+++ b/quartz/plugins/transformers/description.ts
@@ -1,6 +1,7 @@
 import { Root as HTMLRoot } from "hast"
 import { toString } from "hast-util-to-string"
 import { QuartzTransformerPlugin } from "../types"
+import { escapeHTML } from "../../util/escape"
 
 export interface Options {
   descriptionLength: number
@@ -10,15 +11,6 @@ const defaultOptions: Options = {
   descriptionLength: 150,
 }
 
-const escapeHTML = (unsafe: string) => {
-  return unsafe
-    .replaceAll("&", "&amp;")
-    .replaceAll("<", "&lt;")
-    .replaceAll(">", "&gt;")
-    .replaceAll('"', "&quot;")
-    .replaceAll("'", "&#039;")
-}
-
 export const Description: QuartzTransformerPlugin<Partial<Options> | undefined> = (userOpts) => {
   const opts = { ...defaultOptions, ...userOpts }
   return {
diff --git a/quartz/util/escape.ts b/quartz/util/escape.ts
new file mode 100644
index 000000000..197558c7d
--- /dev/null
+++ b/quartz/util/escape.ts
@@ -0,0 +1,8 @@
+export const escapeHTML = (unsafe: string) => {
+  return unsafe
+    .replaceAll("&", "&amp;")
+    .replaceAll("<", "&lt;")
+    .replaceAll(">", "&gt;")
+    .replaceAll('"', "&quot;")
+    .replaceAll("'", "&#039;")
+}