diff --git a/_config.yml b/_config.yml
index 4bcd494..9a54ca0 100644
--- a/_config.yml
+++ b/_config.yml
@@ -21,7 +21,7 @@ highlight_theme: default # "default" (default), "tomorrow", "tomorrow-night", "t
 url     : "https://blog.pengzhan.dev"  # "https://dev.pengzhan.dev"
 baseurl : ""
 fakebaseurl: "" # "/proxy/4000"
-title   : "STSD: A Pretended Tech Blog"
+title   : "STSD"
 description: > # this means to ignore newlines until "Language & timezone"
     My personal blog, some contents are useful, the others are not. Just like my mediocre life.
 
diff --git a/assets/android-chrome-192x192.png b/assets/android-chrome-192x192.png
index 845e94f..2668c9b 100644
Binary files a/assets/android-chrome-192x192.png and b/assets/android-chrome-192x192.png differ
diff --git a/assets/android-chrome-512x512.png b/assets/android-chrome-512x512.png
new file mode 100644
index 0000000..0d10d4e
Binary files /dev/null and b/assets/android-chrome-512x512.png differ
diff --git a/assets/apple-touch-icon.png b/assets/apple-touch-icon.png
index 2f4cc33..2bdf120 100644
Binary files a/assets/apple-touch-icon.png and b/assets/apple-touch-icon.png differ
diff --git a/assets/browserconfig.xml b/assets/browserconfig.xml
index 56836be..b3930d0 100644
--- a/assets/browserconfig.xml
+++ b/assets/browserconfig.xml
@@ -2,7 +2,7 @@
 <browserconfig>
     <msapplication>
         <tile>
-            <square150x150logo src="/assets/mstile-150x150.png"/>
+            <square150x150logo src="/mstile-150x150.png"/>
             <TileColor>#da532c</TileColor>
         </tile>
     </msapplication>
diff --git a/assets/favicon-16x16.png b/assets/favicon-16x16.png
index 99eb654..b0c4ec3 100644
Binary files a/assets/favicon-16x16.png and b/assets/favicon-16x16.png differ
diff --git a/assets/favicon-32x32.png b/assets/favicon-32x32.png
index 1b6559a..ccc8fe5 100644
Binary files a/assets/favicon-32x32.png and b/assets/favicon-32x32.png differ
diff --git a/assets/favicon.ico b/assets/favicon.ico
index 488470d..b3cc86a 100644
Binary files a/assets/favicon.ico and b/assets/favicon.ico differ
diff --git a/assets/mstile-150x150.png b/assets/mstile-150x150.png
index e313209..3b433b3 100644
Binary files a/assets/mstile-150x150.png and b/assets/mstile-150x150.png differ
diff --git a/assets/safari-pinned-tab.svg b/assets/safari-pinned-tab.svg
deleted file mode 100644
index 6193ce2..0000000
--- a/assets/safari-pinned-tab.svg
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" standalone="no"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
- "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
-<svg version="1.0" xmlns="http://www.w3.org/2000/svg"
- width="231.000000pt" height="231.000000pt" viewBox="0 0 231.000000 231.000000"
- preserveAspectRatio="xMidYMid meet">
-<metadata>
-Created by potrace 1.14, written by Peter Selinger 2001-2017
-</metadata>
-<g transform="translate(0.000000,231.000000) scale(0.100000,-0.100000)"
-fill="#000000" stroke="none">
-<path d="M0 1160 l0 -1090 1155 0 1155 0 0 1090 0 1090 -1155 0 -1155 0 0
--1090z"/>
-</g>
-</svg>
diff --git a/assets/site.webmanifest b/assets/site.webmanifest
index ef84bf8..b20abb7 100644
--- a/assets/site.webmanifest
+++ b/assets/site.webmanifest
@@ -3,9 +3,14 @@
     "short_name": "",
     "icons": [
         {
-            "src": "/assets/android-chrome-192x192.png",
+            "src": "/android-chrome-192x192.png",
             "sizes": "192x192",
             "type": "image/png"
+        },
+        {
+            "src": "/android-chrome-512x512.png",
+            "sizes": "512x512",
+            "type": "image/png"
         }
     ],
     "theme_color": "#ffffff",