diff --git a/public/assets/css/app.css.zst b/public/assets/css/app.css.zst
new file mode 100644
index 00000000..f27d4f69
Binary files /dev/null and b/public/assets/css/app.css.zst differ
diff --git a/public/assets/css/code.css.br b/public/assets/css/code.css.br
deleted file mode 100644
index c0809f08..00000000
Binary files a/public/assets/css/code.css.br and /dev/null differ
diff --git a/public/assets/css/colours.css.zst b/public/assets/css/colours.css.zst
new file mode 100644
index 00000000..fd30b78c
Binary files /dev/null and b/public/assets/css/colours.css.zst differ
diff --git a/public/assets/css/content.css.zst b/public/assets/css/content.css.zst
new file mode 100644
index 00000000..01cfa187
Binary files /dev/null and b/public/assets/css/content.css.zst differ
diff --git a/public/assets/css/fonts.css.zst b/public/assets/css/fonts.css.zst
new file mode 100644
index 00000000..c8ec55f1
Binary files /dev/null and b/public/assets/css/fonts.css.zst differ
diff --git a/public/assets/css/h-card.css.zst b/public/assets/css/h-card.css.zst
new file mode 100644
index 00000000..b54e6a24
Binary files /dev/null and b/public/assets/css/h-card.css.zst differ
diff --git a/public/assets/css/indieauth.css.zst b/public/assets/css/indieauth.css.zst
new file mode 100644
index 00000000..5e9e979f
Binary files /dev/null and b/public/assets/css/indieauth.css.zst differ
diff --git a/public/assets/css/layout.css.zst b/public/assets/css/layout.css.zst
new file mode 100644
index 00000000..aa9bded4
Binary files /dev/null and b/public/assets/css/layout.css.zst differ
diff --git a/public/assets/css/notes.css.zst b/public/assets/css/notes.css.zst
new file mode 100644
index 00000000..f9cdbf82
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diff --git a/public/assets/css/variables.css.zst b/public/assets/css/variables.css.zst
new file mode 100644
index 00000000..e1ccda8b
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diff --git a/public/assets/frontend/is-land.js.zst b/public/assets/frontend/is-land.js.zst
new file mode 100644
index 00000000..fda6b38c
Binary files /dev/null and b/public/assets/frontend/is-land.js.zst differ
diff --git a/public/assets/frontend/snow-fall.js.zst b/public/assets/frontend/snow-fall.js.zst
new file mode 100644
index 00000000..96c25ccc
Binary files /dev/null and b/public/assets/frontend/snow-fall.js.zst differ
diff --git a/public/assets/highlight/zenburn.css.zst b/public/assets/highlight/zenburn.css.zst
new file mode 100644
index 00000000..f7ddaa93
Binary files /dev/null and b/public/assets/highlight/zenburn.css.zst differ
diff --git a/public/assets/js/app.js.zst b/public/assets/js/app.js.zst
new file mode 100644
index 00000000..5db3d9e5
Binary files /dev/null and b/public/assets/js/app.js.zst differ
diff --git a/public/assets/js/auth.js.zst b/public/assets/js/auth.js.zst
new file mode 100644
index 00000000..9c96525d
Binary files /dev/null and b/public/assets/js/auth.js.zst differ
diff --git a/scripts/compress.sh b/scripts/compress.sh
index 727f1b83..eb9e34a2 100755
--- a/scripts/compress.sh
+++ b/scripts/compress.sh
@@ -1,13 +1,41 @@
 #!/usr/bin/env zsh
 
-if ! type fd &> /dev/null; then
+if ! (( $+commands[fd] )) &> /dev/null; then
     echo "fd not installed"
     exit 1
 fi
 
-if ! type brotli &> /dev/null; then
+if ! (( $+commands[brotli] )) &> /dev/null; then
     echo "brotli not installed"
     exit 1
 fi
 
-fd -e css -e js --search-path ./public/assets --type f -x brotli --force --best --output={}.br {}
+if ! (( $+commands[zstd] )) &> /dev/null; then
+    echo "zstd not installed"
+    exit 1
+fi
+
+# Make .br files
+fd --extension css --extension js --search-path ./public/assets --type f --exec brotli --force --best --output={}.br {}
+# Make .zst files
+fd --extension css --extension js --search-path ./public/assets --type f --exec zstd --quiet --force --ultra -22 --exclude-compressed {} -o {}.zst
+
+# Remove files that actually got bigger!
+fd --extension br --extension zst --search-path ./public/assets --type f --exec sh -c '
+for file; do
+  src="${file%.br}"
+  src="${src%.zst}"
+  if [ -f "$src" ]; then
+    # Get file sizes using stat with cross-platform compatibility
+    if [ "$(uname)" = "Darwin" ]; then
+      file_size=$(stat -f%z "$file")
+      src_size=$(stat -f%z "$src")
+    else
+      file_size=$(stat -c%s "$file")
+      src_size=$(stat -c%s "$src")
+    fi
+    # Compare sizes and conditionally echo rm command
+    [ "$file_size" -ge "$src_size" ] && rm "$file"
+  fi
+done
+' _ {}