diff --git a/bin/omarchy-webapp-install b/bin/omarchy-webapp-install
index acfdf858..d976622d 100755
--- a/bin/omarchy-webapp-install
+++ b/bin/omarchy-webapp-install
@@ -13,6 +13,18 @@ safe_icon_name() {
     | sed 's/[^[:alnum:]]\+/-/g; s/^-//; s/-$//'
 }
 
+require_plain_name() {
+  # The name becomes a filename. A slash would turn it into directory levels, so
+  # the launcher lands somewhere omarchy-webapp-remove cannot address and the app
+  # is stuck in the launcher; a leading ../ leaves the applications directory
+  # altogether. Refuse rather than silently renaming what the user typed -- most
+  # often it is a URL entered in the name field.
+  if [[ $1 == */* ]]; then
+    echo "App name cannot contain '/': $1"
+    exit 1
+  fi
+}
+
 icon_name_from_ref() {
   local ref="$1"
   local name
@@ -68,6 +80,7 @@ fetch_site_icon() {
 if (( $# < 3 )); then
   echo -e "\e[32mLet's create a new web app you can start with the app launcher.\n\e[0m"
   APP_NAME=$(gum input --prompt "Name> " --placeholder "My favorite web app")
+  require_plain_name "$APP_NAME"
   APP_URL=$(gum input --prompt "URL> " --placeholder "https://example.com")
   if [[ ! $APP_URL =~ ^[a-zA-Z][a-zA-Z0-9+.-]*: ]]; then
     APP_URL="https://$APP_URL"
@@ -104,6 +117,8 @@ if [[ -z $APP_NAME || -z $APP_URL ]]; then
   exit 1
 fi
 
+require_plain_name "$APP_NAME"
+
 if [[ -z $ICON_REF ]]; then
   ICON_VALUE=$(safe_icon_name "$APP_NAME")
   mkdir -p "$ICON_DIR"
@@ -132,8 +147,9 @@ fi
 EXEC_COMMAND="${CUSTOM_EXEC:-omarchy-launch-webapp $APP_URL}"
 
 # Create application .desktop file
-DESKTOP_FILE="$HOME/.local/share/applications/$APP_NAME.desktop"
-mkdir -p "$(dirname "$DESKTOP_FILE")"
+DESKTOP_DIR="$HOME/.local/share/applications"
+DESKTOP_FILE="$DESKTOP_DIR/$APP_NAME.desktop"
+mkdir -p "$DESKTOP_DIR"
 
 cat >"$DESKTOP_FILE" <<EOF
 [Desktop Entry]
diff --git a/bin/omarchy-webapp-remove b/bin/omarchy-webapp-remove
index 9cf72c38..b3244637 100755
--- a/bin/omarchy-webapp-remove
+++ b/bin/omarchy-webapp-remove
@@ -9,14 +9,31 @@ ICON_DIR="$HOME/.local/share/icons/hicolor/256x256/apps"
 OLD_ICON_DIR="$HOME/.local/share/applications/icons"
 DESKTOP_DIR="$HOME/.local/share/applications/"
 
-if (( $# == 0 )); then
-  # Find all web apps
-  while IFS= read -r -d '' file; do
-    if grep -q '^Exec=.*\(omarchy-launch-webapp\|omarchy-webapp-handler\).*' "$file"; then
-      WEB_APPS+=("$(basename "${file%.desktop}")")
-    fi
-  done < <(find "$DESKTOP_DIR" -name '*.desktop' -print0)
+# Always index the launchers, so removal deletes the file that was found rather
+# than a path rebuilt from the displayed name. Installs predating the name
+# validation could nest the launcher inside directories, and those are exactly
+# the ones a reconstructed path cannot reach.
+WEB_APP_PATHS=()
+while IFS= read -r -d '' file; do
+  if grep -q '^Exec=.*\(omarchy-launch-webapp\|omarchy-webapp-handler\).*' "$file"; then
+    WEB_APPS+=("$(basename "${file%.desktop}")")
+    WEB_APP_PATHS+=("$file")
+  fi
+done < <(find "$DESKTOP_DIR" -name '*.desktop' -print0 2>/dev/null)
 
+# The launcher matching a chosen name, or empty when nothing was indexed under
+# it (an app removed between the scan and the pick, say).
+path_for_web_app() {
+  local wanted="$1" i
+  for i in "${!WEB_APPS[@]}"; do
+    if [[ ${WEB_APPS[$i]} == "$wanted" ]]; then
+      printf '%s\n' "${WEB_APP_PATHS[$i]}"
+      return 0
+    fi
+  done
+}
+
+if (( $# == 0 )); then
   if ((${#WEB_APPS[@]})); then
     mapfile -t SORTED_WEB_APPS < <(printf '%s\n' "${WEB_APPS[@]}" | sort)
     APP_NAME=$(omarchy-menu-select "Select web app to remove" "${SORTED_WEB_APPS[@]}" -- --width 520 --maxheight 520)
@@ -34,7 +51,8 @@ if [[ -z $APP_NAME ]]; then
 fi
 
 icon_name=$(printf '%s\n' "$APP_NAME" | tr '[:upper:]' '[:lower:]' | sed 's/[^[:alnum:]]\+/-/g; s/^-//; s/-$//')
-rm -f "$DESKTOP_DIR/$APP_NAME.desktop"
+desktop_file=$(path_for_web_app "$APP_NAME")
+rm -f "${desktop_file:-$DESKTOP_DIR/$APP_NAME.desktop}"
 rm -f "$ICON_DIR/$icon_name.png" "$ICON_DIR/$APP_NAME.png" "$OLD_ICON_DIR/$APP_NAME.png"
 
 if [[ ${OMARCHY_REMOVE_NOTIFY:-true} != "false" ]]; then
diff --git a/test/shell.d/webapp-name-test.sh b/test/shell.d/webapp-name-test.sh
new file mode 100644
index 00000000..903f851a
--- /dev/null
+++ b/test/shell.d/webapp-name-test.sh
@@ -0,0 +1,126 @@
+#!/bin/bash
+
+set -euo pipefail
+
+source "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)/base-test.sh"
+
+tmp_dir=$(mktemp -d)
+trap 'rm -rf "$tmp_dir"' EXIT
+mkdir -p "$tmp_dir/bin" "$tmp_dir/home"
+
+for stub in gtk-update-icon-cache update-desktop-database omarchy-notification-send; do
+  printf '#!/bin/bash\n:\n' >"$tmp_dir/bin/$stub"
+  chmod +x "$tmp_dir/bin/$stub"
+done
+
+run_install() {
+  HOME="$tmp_dir/home" PATH="$tmp_dir/bin:$PATH" \
+    "$ROOT/bin/omarchy-webapp-install" "$@"
+}
+
+run_remove() {
+  HOME="$tmp_dir/home" PATH="$tmp_dir/bin:$PATH" OMARCHY_REMOVE_NOTIFY=false \
+    "$ROOT/bin/omarchy-webapp-remove" "$@"
+}
+
+apps_dir="$tmp_dir/home/.local/share/applications"
+icons_dir="$tmp_dir/home/.local/share/icons/hicolor/256x256/apps"
+
+# A URL typed into the name field is the reported way in. Every slash used to
+# become a directory level, leaving a launcher nothing could address. Assert on
+# the message: creating the launcher directly in the applications directory
+# already makes the redirect fail on its own, so a bare non-zero exit would pass
+# just as well with no validation at all.
+output=$(run_install "http://example.test/oops" "https://example.com" hey 2>&1) &&
+  fail "webapp install rejects a name containing a slash"
+[[ $output == *"App name cannot contain '/'"* ]] ||
+  fail "webapp install says why it refused a slashed name" "$output"
+[[ -e "$apps_dir/http:" ]] &&
+  fail "webapp install does not create a directory from a slashed name"
+pass "webapp install rejects a name that would nest the launcher"
+
+# The name was a path fragment until something said otherwise, so ../ climbed
+# out of the applications directory entirely and wrote wherever it landed.
+if run_install "../../../../escaped" "https://example.com" hey >/dev/null 2>&1; then
+  fail "webapp install rejects a name that climbs out of the applications directory"
+fi
+[[ -e "$tmp_dir/escaped.desktop" ]] &&
+  fail "webapp install writes no launcher outside the applications directory"
+pass "webapp install refuses a name that would escape the applications directory"
+
+# The interactive prompt reads the name long before it is used as a path, and
+# fetches the site icon in between. Rejecting only at the write leaves that icon
+# behind in the user's icon theme, once per attempt.
+mkdir -p "$tmp_dir/ibin"
+cp "$tmp_dir/bin"/* "$tmp_dir/ibin/"
+cat >"$tmp_dir/ibin/gum" <<'STUB'
+#!/bin/bash
+count_file="${GUM_STUB_COUNT:?}"
+count=$(cat "$count_file" 2>/dev/null || echo 0)
+count=$((count + 1))
+echo "$count" >"$count_file"
+if (( count == 1 )); then
+  echo "http://example.test/oops"
+else
+  echo "https://example.com"
+fi
+STUB
+cat >"$tmp_dir/ibin/curl" <<'STUB'
+#!/bin/bash
+# Answer any download with a real PNG so the icon fetch reports success.
+out=""
+prev=""
+for arg in "$@"; do
+  [[ $prev == "-o" ]] && out="$arg"
+  prev="$arg"
+done
+if [[ -n $out ]]; then
+  printf '%s' 'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8z8BQDwAEhQGAhKmMIQAAAABJRU5ErkJggg==' | base64 -d >"$out"
+fi
+STUB
+chmod +x "$tmp_dir/ibin/gum" "$tmp_dir/ibin/curl"
+
+if HOME="$tmp_dir/home" PATH="$tmp_dir/ibin:$PATH" \
+  GUM_STUB_COUNT="$tmp_dir/gum-count" \
+  "$ROOT/bin/omarchy-webapp-install" >/dev/null 2>&1; then
+  fail "interactive webapp install rejects a name containing a slash"
+fi
+if compgen -G "$icons_dir/*.png" >/dev/null; then
+  fail "interactive webapp install downloads no icon for a name it refuses" \
+    "$(ls "$icons_dir")"
+fi
+pass "webapp install refuses a slashed name before fetching its icon"
+
+# A normal name still installs and removes.
+run_install "Example App" "https://example.com" hey >/dev/null
+[[ -f "$apps_dir/Example App.desktop" ]] ||
+  fail "webapp install writes the launcher for an ordinary name"
+run_remove "Example App" >/dev/null
+[[ -f "$apps_dir/Example App.desktop" ]] &&
+  fail "webapp remove deletes the launcher it installed"
+pass "webapp install and remove round-trip an ordinary name"
+
+# Anything installed by an older version can still be nested. Removal has to
+# reach it, which a path rebuilt from the displayed name never could.
+mkdir -p "$apps_dir/http:/127.0.0.1:4000"
+cat >"$apps_dir/http:/127.0.0.1:4000/.desktop" <<'DESKTOP'
+[Desktop Entry]
+Name=http://127.0.0.1:4000
+Exec=omarchy-launch-webapp https://127.0.0.1:4000
+Type=Application
+DESKTOP
+
+# This is the name the picker shows for that file: the script strips .desktop
+# from the path and then takes the basename, which lands on the directory.
+run_remove "127.0.0.1:4000" >/dev/null
+[[ -f "$apps_dir/http:/127.0.0.1:4000/.desktop" ]] &&
+  fail "webapp remove deletes a launcher left nested by an older install"
+pass "webapp remove reaches a nested legacy launcher"
+
+# Removing by name on a machine with no applications directory yet must stay
+# quiet: omarchy-remove-gaming-xbox-cloud calls it without hiding stderr.
+noise=$(HOME="$tmp_dir/empty" PATH="$tmp_dir/bin:$PATH" OMARCHY_REMOVE_NOTIFY=false \
+  "$ROOT/bin/omarchy-webapp-remove" "Xbox Cloud Gaming" 2>&1 >/dev/null)
+[[ -n $noise ]] &&
+  fail "webapp remove stays quiet with no applications directory" "$noise"
+pass "webapp remove stays quiet when there is no applications directory"