diff --git a/cmd/camera-streamer.c b/cmd/camera-streamer.c
index da294f0..728c749 100644
--- a/cmd/camera-streamer.c
+++ b/cmd/camera-streamer.c
@@ -51,7 +51,14 @@ void camera_http_option(http_worker_t *worker, FILE *stream)
   bool headers = false;
   http_enum_params(worker, stream, camera_http_set_option, &headers);
   if (!headers) {
-    http_404(stream, "No options passed.\r\n");
+    http_404(stream, "");
+    fprintf(stream, "No options passed.\r\n");
+  }
+
+  fprintf(stream, "\r\nSet: /option?name=value\r\n\r\n");
+
+  if (camera) {
+    device_dump_options(camera->camera, stream);
   }
 }
 
diff --git a/device/device.c b/device/device.c
index 60f9fad..d3ab7d3 100644
--- a/device/device.c
+++ b/device/device.c
@@ -211,6 +211,13 @@ int device_video_force_key(device_t *dev)
   return 0;
 }
 
+void device_dump_options(device_t *dev, FILE *stream)
+{
+  if (dev || dev->hw->device_dump_options) {
+    dev->hw->device_dump_options(dev, stream);
+  }
+}
+
 int device_set_fps(device_t *dev, int desired_fps)
 {
   if (!dev || dev->hw->device_set_fps(dev, desired_fps) < 0)
diff --git a/device/device.h b/device/device.h
index 50655c0..bdc2f6e 100644
--- a/device/device.h
+++ b/device/device.h
@@ -2,6 +2,7 @@
 
 #include <stdbool.h>
 #include <stdint.h>
+#include <stdio.h>
 
 typedef struct buffer_s buffer_t;
 typedef struct buffer_list_s buffer_list_t;
@@ -13,6 +14,7 @@ typedef struct device_hw_s {
   void (*device_close)(device_t *dev);
   int (*device_set_decoder_start)(device_t *dev, bool do_on);
   int (*device_video_force_key)(device_t *dev);
+  void (*device_dump_options)(device_t *dev, FILE *stream);
   int (*device_set_fps)(device_t *dev, int desired_fps);
   int (*device_set_option)(device_t *dev, const char *key, const char *value);
 
@@ -65,6 +67,7 @@ int device_set_stream(device_t *dev, bool do_on);
 int device_set_decoder_start(device_t *dev, bool do_on);
 int device_video_force_key(device_t *dev);
 
+void device_dump_options(device_t *dev, FILE *stream);
 int device_set_fps(device_t *dev, int desired_fps);
 int device_set_option_string(device_t *dev, const char *option, const char *value);
 void device_set_option_list(device_t *dev, const char *option_list);
diff --git a/device/libcamera/device.cc b/device/libcamera/device.cc
index e09d601..5bc17ed 100644
--- a/device/libcamera/device.cc
+++ b/device/libcamera/device.cc
@@ -17,22 +17,12 @@ libcamera::ControlInfoMap::Map libcamera_control_list(device_t *dev)
   return controls_map;
 }
 
-void libcamera_device_dump(device_t *dev)
+void libcamera_device_dump_options(device_t *dev, FILE *stream)
 {
   auto &properties = dev->libcamera->camera->properties();
   auto idMap = properties.idMap();
 
-  for (auto const &control : libcamera_control_list(dev)) {
-    if (!control.first)
-      continue;
-
-    auto control_id = control.first;
-    auto control_key = libcamera_device_option_normalize(control_id->name());
-    auto control_info = control.second;
-
-    LOG_VERBOSE(dev, "Available control: %s (%08x, type=%d): %s",
-      control_id->name().c_str(), control_id->id(), control_id->type(), control_info.toString().c_str());
-  }
+  fprintf(stream, "Properties:\n");
 
   for (auto const &control : properties) {
     if (!control.first)
@@ -46,8 +36,25 @@ void libcamera_device_dump(device_t *dev)
       control_id_name = control_id_info->name();
     }
 
-    LOG_VERBOSE(dev, "Property: %s (%08x, type=%d): %s",
-      control_id_name.c_str(), control_id, control_value.type(), control_value.toString().c_str());
+    fprintf(stream, "- property: %s (%08x, type=%d): %s\n",
+      control_id_name.c_str(), control_id, control_value.type(),
+      control_value.toString().c_str());
+  }
+
+  fprintf(stream, "\n");
+  fprintf(stream, "Options:\n");
+
+  for (auto const &control : libcamera_control_list(dev)) {
+    if (!control.first)
+      continue;
+
+    auto control_id = control.first;
+    auto control_key = libcamera_device_option_normalize(control_id->name());
+    auto control_info = control.second;
+
+    fprintf(stream, "- available option: %s (%08x, type=%d): %s\n",
+      control_id->name().c_str(), control_id->id(), control_id->type(),
+      control_info.toString().c_str());
   }
 }
 
@@ -80,8 +87,6 @@ int libcamera_device_open(device_t *dev)
   }
 
 	LOG_INFO(dev, "Device path=%s opened", dev->path);
-
-  libcamera_device_dump(dev);
   return 0;
 
 error:
diff --git a/device/libcamera/libcamera.cc b/device/libcamera/libcamera.cc
index 6c43bcb..2030112 100644
--- a/device/libcamera/libcamera.cc
+++ b/device/libcamera/libcamera.cc
@@ -4,6 +4,7 @@
 device_hw_t libcamera_device_hw = {
   .device_open = libcamera_device_open,
   .device_close = libcamera_device_close,
+  .device_dump_options = libcamera_device_dump_options,
   .device_set_fps = libcamera_device_set_fps,
   .device_set_option = libcamera_device_set_option,
 
diff --git a/device/libcamera/libcamera.hh b/device/libcamera/libcamera.hh
index f54ce12..8a75b23 100644
--- a/device/libcamera/libcamera.hh
+++ b/device/libcamera/libcamera.hh
@@ -57,6 +57,7 @@ typedef struct buffer_libcamera_s {
 
 int libcamera_device_open(device_t *dev);
 void libcamera_device_close(device_t *dev);
+void libcamera_device_dump_options(device_t *dev, FILE *stream);
 int libcamera_device_set_fps(device_t *dev, int desired_fps);
 int libcamera_device_set_option(device_t *dev, const char *key, const char *value);
 
diff --git a/html/index.html b/html/index.html
index 7745dfe..0f92e09 100644
--- a/html/index.html
+++ b/html/index.html
@@ -55,6 +55,7 @@
 			The commands available on some cameras:<br>
 			<br>
 			<ul>
+				<li><a href="option">/option</a> see all options.</li>
 				<li><a href="option?AfTrigger=1">/option?AfTrigger=1</a> trigger auto focus.</li>
 			</ul>
 		</li>