diff --git a/CHANGELOG.md b/CHANGELOG.md
index bc668dbe89..8f5affa068 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -644,6 +644,9 @@ Data sources:
   defined in the stack meta data in the admin view, e.g. `{"voxelOffset":
   [-3072, -3072, 0]}`.
 
+- Neuroglancer Precomputed URLs that start with `gs://` are rewritten on the fly
+  to use Google Cloud storage get API requess, improving CORS support.
+
 - A second new tile source is available: CloudVolume based tiles, generated by
   the back-end. While slow for many users, it is a convenient way of make
   neuroglancer volumes available to CATMAID if they aren't supported by the
diff --git a/django/applications/catmaid/static/libs/ngpre-wasm/ngpre_wasm.js b/django/applications/catmaid/static/libs/ngpre-wasm/ngpre_wasm.js
index 8c4bb8914d..74a5ad6759 100644
--- a/django/applications/catmaid/static/libs/ngpre-wasm/ngpre_wasm.js
+++ b/django/applications/catmaid/static/libs/ngpre-wasm/ngpre_wasm.js
@@ -227,28 +227,6 @@ let wasm_bindgen;
         return className;
     }
 
-    function _assertClass(instance, klass) {
-        if (!(instance instanceof klass)) {
-            throw new Error(`expected instance of ${klass.name}`);
-        }
-    }
-
-    let cachedBigUint64ArrayMemory0 = null;
-
-    function getBigUint64ArrayMemory0() {
-        if (cachedBigUint64ArrayMemory0 === null || cachedBigUint64ArrayMemory0.byteLength === 0) {
-            cachedBigUint64ArrayMemory0 = new BigUint64Array(wasm.memory.buffer);
-        }
-        return cachedBigUint64ArrayMemory0;
-    }
-
-    function passArray64ToWasm0(arg, malloc) {
-        const ptr = malloc(arg.length * 8, 8) >>> 0;
-        getBigUint64ArrayMemory0().set(arg, ptr / 8);
-        WASM_VECTOR_LEN = arg.length;
-        return ptr;
-    }
-
     let cachedUint32ArrayMemory0 = null;
 
     function getUint32ArrayMemory0() {
@@ -263,6 +241,15 @@ let wasm_bindgen;
         return getUint32ArrayMemory0().subarray(ptr / 4, ptr / 4 + len);
     }
 
+    let cachedBigUint64ArrayMemory0 = null;
+
+    function getBigUint64ArrayMemory0() {
+        if (cachedBigUint64ArrayMemory0 === null || cachedBigUint64ArrayMemory0.byteLength === 0) {
+            cachedBigUint64ArrayMemory0 = new BigUint64Array(wasm.memory.buffer);
+        }
+        return cachedBigUint64ArrayMemory0;
+    }
+
     function getArrayU64FromWasm0(ptr, len) {
         ptr = ptr >>> 0;
         return getBigUint64ArrayMemory0().subarray(ptr / 8, ptr / 8 + len);
@@ -371,6 +358,19 @@ let wasm_bindgen;
         return getFloat64ArrayMemory0().subarray(ptr / 8, ptr / 8 + len);
     }
 
+    function _assertClass(instance, klass) {
+        if (!(instance instanceof klass)) {
+            throw new Error(`expected instance of ${klass.name}`);
+        }
+    }
+
+    function passArray64ToWasm0(arg, malloc) {
+        const ptr = malloc(arg.length * 8, 8) >>> 0;
+        getBigUint64ArrayMemory0().set(arg, ptr / 8);
+        WASM_VECTOR_LEN = arg.length;
+        return ptr;
+    }
+
     let stack_pointer = 128;
 
     function addBorrowedObject(obj) {
@@ -382,12 +382,10 @@ let wasm_bindgen;
         wasm._dyn_core__ops__function__FnMut__A____Output___R_as_wasm_bindgen__closure__WasmClosure___describe__invoke__hba9c4d05d94bb2f6(arg0, arg1, addHeapObject(arg2));
     }
 
-    function __wbg_adapter_255(arg0, arg1, arg2, arg3) {
+    function __wbg_adapter_253(arg0, arg1, arg2, arg3) {
         wasm.wasm_bindgen__convert__closures__invoke2_mut__ha4add01b7784d4e4(arg0, arg1, addHeapObject(arg2), addHeapObject(arg3));
     }
 
-    const __wbindgen_enum_ReferrerPolicy = ["", "no-referrer", "no-referrer-when-downgrade", "origin", "origin-when-cross-origin", "unsafe-url", "same-origin", "strict-origin", "strict-origin-when-cross-origin"];
-
     const __wbindgen_enum_RequestMode = ["same-origin", "no-cors", "cors", "navigate"];
 
     const DatasetAttributesFinalization = (typeof FinalizationRegistry === 'undefined')
@@ -2140,7 +2138,7 @@ let wasm_bindgen;
                     const a = state0.a;
                     state0.a = 0;
                     try {
-                        return __wbg_adapter_255(a, state0.b, arg0, arg1);
+                        return __wbg_adapter_253(a, state0.b, arg0, arg1);
                     } finally {
                         state0.a = a;
                     }
@@ -2232,9 +2230,6 @@ let wasm_bindgen;
         imports.wbg.__wbg_setmode_cd03637eb7da01e0 = function(arg0, arg1) {
             getObject(arg0).mode = __wbindgen_enum_RequestMode[arg1];
         };
-        imports.wbg.__wbg_setreferrerpolicy_aac7a6a625ee4900 = function(arg0, arg1) {
-            getObject(arg0).referrerPolicy = __wbindgen_enum_ReferrerPolicy[arg1];
-        };
         imports.wbg.__wbg_static_accessor_GLOBAL_0be7472e492ad3e3 = function() {
             const ret = typeof global === 'undefined' ? null : global;
             return isLikeNone(ret) ? 0 : addHeapObject(ret);
@@ -2353,8 +2348,8 @@ let wasm_bindgen;
             const ret = false;
             return ret;
         };
-        imports.wbg.__wbindgen_closure_wrapper1323 = function(arg0, arg1, arg2) {
-            const ret = makeMutClosure(arg0, arg1, 264, __wbg_adapter_54);
+        imports.wbg.__wbindgen_closure_wrapper1326 = function(arg0, arg1, arg2) {
+            const ret = makeMutClosure(arg0, arg1, 266, __wbg_adapter_54);
             return addHeapObject(ret);
         };
         imports.wbg.__wbindgen_debug_string = function(arg0, arg1) {
diff --git a/django/applications/catmaid/static/libs/ngpre-wasm/ngpre_wasm_bg.wasm b/django/applications/catmaid/static/libs/ngpre-wasm/ngpre_wasm_bg.wasm
index b9dc07338f..0e2435dac6 100644
Binary files a/django/applications/catmaid/static/libs/ngpre-wasm/ngpre_wasm_bg.wasm and b/django/applications/catmaid/static/libs/ngpre-wasm/ngpre_wasm_bg.wasm differ
diff --git a/sphinx-doc/source/tile_sources.rst b/sphinx-doc/source/tile_sources.rst
index f20474af86..6728783afb 100644
--- a/sphinx-doc/source/tile_sources.rst
+++ b/sphinx-doc/source/tile_sources.rst
@@ -397,7 +397,8 @@ Tile source types are listed by the enumeration integer ID referenced by
    components. It should end in a path component specifying the ordered
    dimensions from which image data should be sliced, separated by underscores.
    For example, ``2_1_0`` will slices chunk dimensions 2, 1, and 0 as the x, y,
-   and z stack dimensions, respectively.
+   and z stack dimensions, respectively. Make sure, the path has no trailing
+   slash.
 
    This tile source will also look for a path component ending in ``/info`` to
    use as the dataset root directory. If it does not find such a component, it will
@@ -417,6 +418,14 @@ Tile source types are listed by the enumeration integer ID referenced by
    is ``(-3072, -3072, 0)``, then the metadata of the CATMAID stack should look
    like this: ``{"voxelOffset": [-3072, -3072, 0]}``.
 
+   If the ``gs://`` protocol is used like in the example above, each final
+   request path is rewritten in order to use the `get method
+   <https://cloud.google.com/storage/docs/json_api/v1/objects/get>`_  for their
+   Cloud objects. Otherwise, no data can be loaded due to CORS restrictions. A
+   rewritten URL looks like this (requesting the ``/info`` file)::
+
+     https://www.googleapis.com/storage/v1/b/neuroglancer/o/pinky100_v0%2Fson_of_alignment_v15_rechunked%2Finfo?alt=media
+
 Backend Representation
 ----------------------