diff --git a/deploy/build.config.mjs b/deploy/build.config.mjs
index ccd6845f..cd8f5baa 100644
--- a/deploy/build.config.mjs
+++ b/deploy/build.config.mjs
@@ -36,7 +36,7 @@ const config = {
   linux: {
     category: "RolePlaying",
     executableName: "Optolith",
-    icon: "app",
+    icon: "src/assets/icon/AppList.targetsize-512.png",
     target: [
       {
         target: "AppImage",
diff --git a/deploy/build.prerelease.config.mjs b/deploy/build.prerelease.config.mjs
index 79d5046d..f0b2555a 100644
--- a/deploy/build.prerelease.config.mjs
+++ b/deploy/build.prerelease.config.mjs
@@ -26,7 +26,7 @@ const config = {
         ]
       }
     ],
-    icon: "src/assets/icon/icon.ico",
+    icon: "src/assets/icon/AppList.targetsize-512.pre.png",
     artifactName: "OptolithInsiderSetup_${version}.${ext}"
   },
   nsis: {
@@ -37,7 +37,7 @@ const config = {
   linux: {
     category: "RolePlaying",
     executableName: "OptolithInsider",
-    icon: "app",
+    icon: "src/assets/icon/icon.pre.png",
     target: [
       {
         target: "AppImage",
@@ -57,7 +57,7 @@ const config = {
   mac: {
     category: "public.app-category.role-playing-games",
     type: "distribution",
-    icon: "src/assets/icon/AppIcon.icns",
+    icon: "src/assets/icon/AppIcon.pre.icns",
     target: [
       {
         target: "default",
diff --git a/docs/icns-from-iconset.md b/docs/icns-from-iconset.md
new file mode 100644
index 00000000..d7ad3589
--- /dev/null
+++ b/docs/icns-from-iconset.md
@@ -0,0 +1,20 @@
+# `.icns` file from `.iconset` folder
+
+```sh
+iconutil -c icns <PATH_TO_FOLDER>
+```
+
+Make sure all of the following files are available. The tool is **case-sensitive**.
+
+```
+icon_16.png
+icon_16@2x.png
+icon_32.png
+icon_32@2x.png
+icon_128.png
+icon_128@2x.png
+icon_256.png
+icon_256@2x.png
+icon_512.png
+icon_512@2x.png
+```
diff --git a/src/assets/icon/AppIcon.pre.icns b/src/assets/icon/AppIcon.pre.icns
new file mode 100644
index 00000000..db633c8e
Binary files /dev/null and b/src/assets/icon/AppIcon.pre.icns differ
diff --git a/src/assets/icon/AppIcon.pre.iconset/icon_128.png b/src/assets/icon/AppIcon.pre.iconset/icon_128.png
new file mode 100644
index 00000000..6d24a5ea
Binary files /dev/null and b/src/assets/icon/AppIcon.pre.iconset/icon_128.png differ
diff --git a/src/assets/icon/AppIcon.pre.iconset/icon_128@2x.png b/src/assets/icon/AppIcon.pre.iconset/icon_128@2x.png
new file mode 100644
index 00000000..27034c5f
Binary files /dev/null and b/src/assets/icon/AppIcon.pre.iconset/icon_128@2x.png differ
diff --git a/src/assets/icon/AppIcon.pre.iconset/icon_16.png b/src/assets/icon/AppIcon.pre.iconset/icon_16.png
new file mode 100644
index 00000000..2fda298a
Binary files /dev/null and b/src/assets/icon/AppIcon.pre.iconset/icon_16.png differ
diff --git a/src/assets/icon/AppIcon.pre.iconset/icon_16@2x.png b/src/assets/icon/AppIcon.pre.iconset/icon_16@2x.png
new file mode 100644
index 00000000..798b4cb1
Binary files /dev/null and b/src/assets/icon/AppIcon.pre.iconset/icon_16@2x.png differ
diff --git a/src/assets/icon/AppIcon.pre.iconset/icon_256.png b/src/assets/icon/AppIcon.pre.iconset/icon_256.png
new file mode 100644
index 00000000..f9c2c090
Binary files /dev/null and b/src/assets/icon/AppIcon.pre.iconset/icon_256.png differ
diff --git a/src/assets/icon/AppIcon.pre.iconset/icon_256@2x.png b/src/assets/icon/AppIcon.pre.iconset/icon_256@2x.png
new file mode 100644
index 00000000..e2a094da
Binary files /dev/null and b/src/assets/icon/AppIcon.pre.iconset/icon_256@2x.png differ
diff --git a/src/assets/icon/AppIcon.pre.iconset/icon_32.png b/src/assets/icon/AppIcon.pre.iconset/icon_32.png
new file mode 100644
index 00000000..776627b8
Binary files /dev/null and b/src/assets/icon/AppIcon.pre.iconset/icon_32.png differ
diff --git a/src/assets/icon/AppIcon.pre.iconset/icon_32@2x.png b/src/assets/icon/AppIcon.pre.iconset/icon_32@2x.png
new file mode 100644
index 00000000..cadc6c71
Binary files /dev/null and b/src/assets/icon/AppIcon.pre.iconset/icon_32@2x.png differ
diff --git a/src/assets/icon/AppIcon.pre.iconset/icon_512.png b/src/assets/icon/AppIcon.pre.iconset/icon_512.png
new file mode 100644
index 00000000..a3fd7d51
Binary files /dev/null and b/src/assets/icon/AppIcon.pre.iconset/icon_512.png differ
diff --git a/src/assets/icon/AppIcon.pre.iconset/icon_512@2x.png b/src/assets/icon/AppIcon.pre.iconset/icon_512@2x.png
new file mode 100644
index 00000000..a5b0ca98
Binary files /dev/null and b/src/assets/icon/AppIcon.pre.iconset/icon_512@2x.png differ
diff --git a/src/assets/icon/AppList.targetsize-512.png b/src/assets/icon/AppList.targetsize-512.png
new file mode 100644
index 00000000..db1a2161
Binary files /dev/null and b/src/assets/icon/AppList.targetsize-512.png differ
diff --git a/src/assets/icon/AppList.targetsize-512.pre.png b/src/assets/icon/AppList.targetsize-512.pre.png
new file mode 100644
index 00000000..81e85603
Binary files /dev/null and b/src/assets/icon/AppList.targetsize-512.pre.png differ
diff --git a/src/assets/icon/icon.icns b/src/assets/icon/icon.icns
deleted file mode 100644
index 73e672fc..00000000
Binary files a/src/assets/icon/icon.icns and /dev/null differ
diff --git a/src/assets/icon/icon.ico b/src/assets/icon/icon.ico
deleted file mode 100644
index 72bea2b9..00000000
Binary files a/src/assets/icon/icon.ico and /dev/null differ
diff --git a/src/assets/icon/icon.png b/src/assets/icon/icon.png
index e1764945..82b8d99e 100644
Binary files a/src/assets/icon/icon.png and b/src/assets/icon/icon.png differ
diff --git a/src/assets/icon/icon.pre.png b/src/assets/icon/icon.pre.png
new file mode 100644
index 00000000..359784b2
Binary files /dev/null and b/src/assets/icon/icon.pre.png differ
diff --git a/src/assets/icon/icon256x256.png b/src/assets/icon/icon256x256.png
deleted file mode 100644
index e1764945..00000000
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