diff --git a/Containers/imaginary/Dockerfile b/Containers/imaginary/Dockerfile
index 07dd487adbf..60d3ab4da1f 100644
--- a/Containers/imaginary/Dockerfile
+++ b/Containers/imaginary/Dockerfile
@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:latest
 FROM golang:1.22.0-alpine3.18 as go
 
-ENV IMAGINARY_HASH 6cd9edd1d3fb151eb773c14552886e4fc8e50138
+ENV IMAGINARY_HASH 6cd9edd1d3fb151eb773c14552886e4fc8e50138
 
 RUN set -ex; \
     apk add --no-cache \
@@ -23,9 +23,11 @@ RUN set -ex; \
         vips-magick \
         vips-heif \
         vips-jxl \
-        vips-poppler
+        vips-poppler \
+        bash
 
 COPY --from=go /go/bin/imaginary /usr/local/bin/imaginary
+COPY --chmod=775 start.sh /start.sh
 
 ENV PORT 9000
 
@@ -33,7 +35,7 @@ USER nobody
 
 # https://github.com/h2non/imaginary#memory-issues
 ENV MALLOC_ARENA_MAX=2
-ENTRYPOINT ["imaginary", "-return-size", "-max-allowed-resolution", "222.2"]
+ENTRYPOINT ["/start.sh"]
 
 HEALTHCHECK CMD nc -z localhost "$PORT" || exit 1
 LABEL com.centurylinklabs.watchtower.enable="false"
diff --git a/Containers/imaginary/start.sh b/Containers/imaginary/start.sh
new file mode 100644
index 00000000000..67af02d9f0b
--- /dev/null
+++ b/Containers/imaginary/start.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+if [ -z "$IMAGINARY_SECRET" ]; then
+    imaginary -return-size -max-allowed-resolution 222.2 "$@"
+else
+    imaginary -return-size -max-allowed-resolution 222.2 -key "$IMAGINARY_SECRET" "$@"
+fi
diff --git a/Containers/nextcloud/entrypoint.sh b/Containers/nextcloud/entrypoint.sh
index 5f917324f6e..5125e590644 100644
--- a/Containers/nextcloud/entrypoint.sh
+++ b/Containers/nextcloud/entrypoint.sh
@@ -703,6 +703,7 @@ fi
 if [ "$IMAGINARY_ENABLED" = 'yes' ]; then
     php /var/www/html/occ config:system:set enabledPreviewProviders 0 --value="OC\\Preview\\Imaginary"
     php /var/www/html/occ config:system:set preview_imaginary_url --value="http://$IMAGINARY_HOST:9000"
+    php /var/www/html/occ config:system:set preview_imaginary_key --value="$IMAGINARY_SECRET"
 else
     if [ -n "$(php /var/www/html/occ config:system:get preview_imaginary_url)" ]; then
         php /var/www/html/occ config:system:delete enabledPreviewProviders 0
diff --git a/php/containers.json b/php/containers.json
index f79f1b47e24..0c780618020 100644
--- a/php/containers.json
+++ b/php/containers.json
@@ -146,7 +146,8 @@
         "NEXTCLOUD_PASSWORD",
         "TURN_SECRET",
         "SIGNALING_SECRET",
-        "FULLTEXTSEARCH_PASSWORD"
+        "FULLTEXTSEARCH_PASSWORD",
+        "IMAGINARY_SECRET"
       ],
       "volumes": [
         {
@@ -220,7 +221,8 @@
         "APACHE_PORT=%APACHE_PORT%",
         "APACHE_IP_BINDING=%APACHE_IP_BINDING%",
         "ADDITIONAL_TRUSTED_PROXY=%CADDY_IP_ADDRESS%",
-        "THIS_IS_AIO=true"
+        "THIS_IS_AIO=true",
+        "IMAGINARY_SECRET=%IMAGINARY_SECRET%"
       ],
       "stop_grace_period": 600,
       "restart": "unless-stopped",
@@ -646,7 +648,8 @@
       ],
       "internal_port": "9000",
       "environment": [
-        "TZ=%TIMEZONE%"
+        "TZ=%TIMEZONE%",
+        "IMAGINARY_SECRET=%IMAGINARY_SECRET%"
       ],
       "restart": "unless-stopped",
       "cap_add": [
@@ -664,6 +667,9 @@
       "read_only": true,
       "tmpfs": [
         "/tmp"
+      ],
+      "secrets": [
+        "IMAGINARY_SECRET"
       ]
     },
     {