diff --git a/people/Zha_Ke/page.en.md b/people/Zha_Ke/page.en.md
index 335dc264..dfd37be1 100644
--- a/people/Zha_Ke/page.en.md
+++ b/people/Zha_Ke/page.en.md
@@ -82,7 +82,7 @@ Zha Ke (Lilith) was a transgender man. We have little information of him, only a
 > I'll be forgotten by everyone eventually.
 </details>
 
-<PhotoScroll photos={[ '${path}/photos/letter.jpg']} />
+<PhotoScroll photos={[ '${path}/photos/letter.webp']} />
 
 He wrote, “The world abandoned me long ago. I will also eventually be forgotten by everyone.” However, we will remember him forever. We are grateful that the owner of [StarTransForEve](https://startransforeve.com/) provided his information for our remembrance.
 Rest in peace, Zha Ke
diff --git a/people/Zha_Ke/page.md b/people/Zha_Ke/page.md
index 1d7cc766..83397836 100644
--- a/people/Zha_Ke/page.md
+++ b/people/Zha_Ke/page.md
@@ -9,6 +9,6 @@ info:
 
 （注：信件内容或许有一些触发要素，包括自杀意念和精神疾患内容，请在点开阅读前知晓）
 
-<PhotoScroll photos={[ '${path}/photos/letter.jpg']} />
+<PhotoScroll photos={[ '${path}/photos/letter.webp']} />
 
 他说，「世界早已将我抛弃。而我，终究会被所有人所遗忘。」然而，我们不会遗忘他。感谢 [StarTransForEve](https://startransforeve.com/) 的站主为我们提供了纪念他的线索。扎克，愿你获得平静。
diff --git a/people/Zha_Ke/page.zh_hant.md b/people/Zha_Ke/page.zh_hant.md
index 1a7efce3..70613c6e 100644
--- a/people/Zha_Ke/page.zh_hant.md
+++ b/people/Zha_Ke/page.zh_hant.md
@@ -9,6 +9,6 @@ info:
 
 （註：信件內容或許有一些觸發要素，包括自殺意念和精神疾患內容，請在點開閱讀前知曉）
 
-<PhotoScroll photos={[ '${path}/photos/letter.jpg']} />
+<PhotoScroll photos={[ '${path}/photos/letter.webp']} />
 
 他說，「世界早已將我拋棄。而我，終究會被所有人所遺忘。」然而，我們不會遺忘他。感謝 [StarTransForEve](https://startransforeve.com/) 的站主為我們提供了紀念他的線索。紮克，願你獲得平靜。
diff --git a/people/Zha_Ke/photos/letter.jpg b/people/Zha_Ke/photos/letter.jpg
deleted file mode 100644
index 6ef05972..00000000
Binary files a/people/Zha_Ke/photos/letter.jpg and /dev/null differ
diff --git a/people/Zha_Ke/photos/letter.webp b/people/Zha_Ke/photos/letter.webp
new file mode 100644
index 00000000..763585c7
Binary files /dev/null and b/people/Zha_Ke/photos/letter.webp differ