diff --git a/CHANGES.md b/CHANGES.md
index 1209960c..d54a1d84 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -17,6 +17,7 @@
 - **Major rewrite of the code** - We've switched to using diffusers under-the-hood, which allows us to release new features faster, and focus on making the UI and installer even easier to use.
 
 ### Detailed changelog
+* 3.0.2 - 30 Aug 2023 - Allow blocking NSFW images using a server-side config. This prevents the browser from generating NSFW images or changing the config. Open `config.yaml` in a text editor (e.g. Notepad), and add `block_nsfw: true` at the end, and save the file.
 * 3.0.2 - 29 Aug 2023 - Fixed incorrect matching of embeddings from prompts.
 * 3.0.2 - 24 Aug 2023 - Fix broken seamless tiling.
 * 3.0.2 - 23 Aug 2023 - Fix styling on mobile devices.
diff --git a/ui/easydiffusion/server.py b/ui/easydiffusion/server.py
index e3f80f42..5af198fe 100644
--- a/ui/easydiffusion/server.py
+++ b/ui/easydiffusion/server.py
@@ -36,6 +36,7 @@ NOCACHE_HEADERS = {
     "Pragma": "no-cache",
     "Expires": "0",
 }
+PROTECTED_CONFIG_KEYS = ("block_nsfw",)  # can't change these via the HTTP API
 
 
 class NoCacheStaticFiles(StaticFiles):
@@ -175,7 +176,7 @@ def set_app_config_internal(req: SetAppConfigRequest):
     config["test_diffusers"] = req.test_diffusers
 
     for property, property_value in req.dict().items():
-        if property_value is not None and property not in req.__fields__:
+        if property_value is not None and property not in req.__fields__ and property not in PROTECTED_CONFIG_KEYS:
             config[property] = property_value
 
     try:
@@ -456,6 +457,7 @@ def modify_package_internal(package_name: str, req: dict):
         log.error(traceback.format_exc())
         return HTTPException(status_code=500, detail=str(e))
 
+
 def get_sha256_internal(obj_path):
     import hashlib
     from easydiffusion.utils import sha256sum
@@ -477,4 +479,3 @@ def get_sha256_internal(obj_path):
         log.error(str(e))
         log.error(traceback.format_exc())
         return HTTPException(status_code=500, detail=str(e))
-
diff --git a/ui/easydiffusion/tasks/render_images.py b/ui/easydiffusion/tasks/render_images.py
index f0d25d37..b512e707 100644
--- a/ui/easydiffusion/tasks/render_images.py
+++ b/ui/easydiffusion/tasks/render_images.py
@@ -42,9 +42,16 @@ class RenderTask(Task):
     def run(self):
         "Runs the image generation task on the assigned thread"
 
-        from easydiffusion import task_manager
+        from easydiffusion import task_manager, app
 
         context = runtime.context
+        config = app.getConfig()
+
+        if config.get("block_nsfw", False):  # override if set on the server
+            self.task_data.block_nsfw = True
+            if "nsfw_checker" not in self.task_data.filters:
+                self.task_data.filters.append("nsfw_checker")
+                self.models_data.model_paths["nsfw_checker"] = "nsfw_checker"
 
         def step_callback():
             task_manager.keep_task_alive(self)