diff --git a/src/Viewer.js b/src/Viewer.js
index 79a1f462..5da0c8b6 100644
--- a/src/Viewer.js
+++ b/src/Viewer.js
@@ -26,6 +26,8 @@ import { RenderMode } from './RenderMode.js';
 import { LogLevel } from './LogLevel.js';
 import { SceneRevealMode } from './SceneRevealMode.js';
 import { SplatRenderMode } from './SplatRenderMode.js';
+import { SplatBuffer } from './loaders/SplatBuffer.js';
+import { openDB } from '../util/idb.js';
 
 const THREE_CAMERA_FOV = 50;
 const MINIMUM_DISTANCE_TO_NEW_FOCAL_POINT = .75;
@@ -283,6 +285,9 @@ export class Viewer {
         this.disposing = false;
         this.disposed = false;
         this.disposePromise = null;
+        this.dbPromise = null;
+        // Whether to use indexedDB for caching splat buffers
+        this.cacheEnabled = options.cacheEnabled === true;
         if (!this.dropInMode) this.init();
     }
 
@@ -1009,9 +1014,11 @@ export class Viewer {
         for (let i = 0; i < sceneOptions.length; i++) {
             const options = sceneOptions[i];
             const format = (options.format !== undefined && options.format !== null) ? options.format : sceneFormatFromPath(options.path);
-            const baseDownloadPromise = this.downloadSplatSceneToSplatBuffer(options.path, options.splatAlphaRemovalThreshold,
-                                                                             onLoadProgress.bind(this, i), false, undefined,
-                                                                             format, options.headers);
+            // add indexedDB when caching is enabled
+            const baseDownloadPromise = {
+                promise: this.downloadOrCacheSplatBuffer(options.path, options.splatAlphaRemovalThreshold,
+                    onLoadProgress.bind(this, i), false, undefined, format, options.headers)
+            };
             baseDownloadPromises.push(baseDownloadPromise);
             nativeDownloadPromises.push(baseDownloadPromise.promise);
         }
@@ -2096,4 +2103,59 @@ export class Viewer {
     isMobile() {
         return navigator.userAgent.includes('Mobi');
     }
+
+    async getDb() {
+        if (!this.dbPromise) {
+            this.dbPromise = openDB('SplatBufferCacheDB', 1, {
+                upgrade(db) {
+                    if (!db.objectStoreNames.contains('buffers')) {
+                        db.createObjectStore('buffers');
+                    }
+                }
+            });
+        }
+        return this.dbPromise;
+    }
+
+    async getCachedSplatBuffer(key) {
+        if (!this.cacheEnabled) return null;
+        const db = await this.getDb();
+        const bufferData = await db.get('buffers', key);
+        if (!bufferData) return null;
+        return new SplatBuffer(bufferData);
+    }
+
+    async setCachedSplatBuffer(key, buffer) {
+        if (!this.cacheEnabled) return;
+        const db = await this.getDb();
+        await db.put('buffers', buffer.bufferData, key);
+    }
+
+    async downloadOrCacheSplatBuffer(
+        path,
+        splatAlphaRemovalThreshold = 1,
+        onProgress = undefined,
+        progressiveBuild = false,
+        onSectionBuilt = undefined,
+        format,
+        headers
+    ) {
+        const key = `${path}_${format}_${splatAlphaRemovalThreshold}`;
+        let cached = null;
+        if (this.cacheEnabled) {
+            cached = await this.getCachedSplatBuffer(key);
+            if (cached) return cached;
+        }
+        const buffer = await this.downloadSplatSceneToSplatBuffer(
+            path,
+            splatAlphaRemovalThreshold,
+            onProgress,
+            progressiveBuild,
+            onSectionBuilt,
+            format,
+            headers
+        );
+        if (this.cacheEnabled) await this.setCachedSplatBuffer(key, buffer);
+        return buffer;
+    }
 }
diff --git a/util/idb.js b/util/idb.js
new file mode 100644
index 00000000..dc1114ad
--- /dev/null
+++ b/util/idb.js
@@ -0,0 +1,8 @@
+/**
+ * Bundled by jsDelivr using Rollup v2.79.2 and Terser v5.39.0.
+ * Original file: /npm/idb@7.1.1/build/index.js
+ *
+ * Do NOT use SRI with dynamically generated files! More information: https://www.jsdelivr.com/using-sri-with-dynamic-files
+ */
+let e,t;const n=new WeakMap,r=new WeakMap,o=new WeakMap,s=new WeakMap,a=new WeakMap;let i={get(e,t,n){if(e instanceof IDBTransaction){if("done"===t)return r.get(e);if("objectStoreNames"===t)return e.objectStoreNames||o.get(e);if("store"===t)return n.objectStoreNames[1]?void 0:n.objectStore(n.objectStoreNames[0])}return u(e[t])},set:(e,t,n)=>(e[t]=n,!0),has:(e,t)=>e instanceof IDBTransaction&&("done"===t||"store"===t)||t in e};function c(e){return e!==IDBDatabase.prototype.transaction||"objectStoreNames"in IDBTransaction.prototype?(t||(t=[IDBCursor.prototype.advance,IDBCursor.prototype.continue,IDBCursor.prototype.continuePrimaryKey])).includes(e)?function(...t){return e.apply(l(this),t),u(n.get(this))}:function(...t){return u(e.apply(l(this),t))}:function(t,...n){const r=e.call(l(this),t,...n);return o.set(r,t.sort?t.sort():[t]),u(r)}}function d(t){return"function"==typeof t?c(t):(t instanceof IDBTransaction&&function(e){if(r.has(e))return;const t=new Promise(((t,n)=>{const r=()=>{e.removeEventListener("complete",o),e.removeEventListener("error",s),e.removeEventListener("abort",s)},o=()=>{t(),r()},s=()=>{n(e.error||new DOMException("AbortError","AbortError")),r()};e.addEventListener("complete",o),e.addEventListener("error",s),e.addEventListener("abort",s)}));r.set(e,t)}(t),n=t,(e||(e=[IDBDatabase,IDBObjectStore,IDBIndex,IDBCursor,IDBTransaction])).some((e=>n instanceof e))?new Proxy(t,i):t);var n}function u(e){if(e instanceof IDBRequest)return function(e){const t=new Promise(((t,n)=>{const r=()=>{e.removeEventListener("success",o),e.removeEventListener("error",s)},o=()=>{t(u(e.result)),r()},s=()=>{n(e.error),r()};e.addEventListener("success",o),e.addEventListener("error",s)}));return t.then((t=>{t instanceof IDBCursor&&n.set(t,e)})).catch((()=>{})),a.set(t,e),t}(e);if(s.has(e))return s.get(e);const t=d(e);return t!==e&&(s.set(e,t),a.set(t,e)),t}const l=e=>a.get(e);function f(e,t,{blocked:n,upgrade:r,blocking:o,terminated:s}={}){const a=indexedDB.open(e,t),i=u(a);return r&&a.addEventListener("upgradeneeded",(e=>{r(u(a.result),e.oldVersion,e.newVersion,u(a.transaction),e)})),n&&a.addEventListener("blocked",(e=>n(e.oldVersion,e.newVersion,e))),i.then((e=>{s&&e.addEventListener("close",(()=>s())),o&&e.addEventListener("versionchange",(e=>o(e.oldVersion,e.newVersion,e)))})).catch((()=>{})),i}function p(e,{blocked:t}={}){const n=indexedDB.deleteDatabase(e);return t&&n.addEventListener("blocked",(e=>t(e.oldVersion,e))),u(n).then((()=>{}))}const D=["get","getKey","getAll","getAllKeys","count"],v=["put","add","delete","clear"],b=new Map;function I(e,t){if(!(e instanceof IDBDatabase)||t in e||"string"!=typeof t)return;if(b.get(t))return b.get(t);const n=t.replace(/FromIndex$/,""),r=t!==n,o=v.includes(n);if(!(n in(r?IDBIndex:IDBObjectStore).prototype)||!o&&!D.includes(n))return;const s=async function(e,...t){const s=this.transaction(e,o?"readwrite":"readonly");let a=s.store;return r&&(a=a.index(t.shift())),(await Promise.all([a[n](...t),o&&s.done]))[0]};return b.set(t,s),s}i=(e=>({...e,get:(t,n,r)=>I(t,n)||e.get(t,n,r),has:(t,n)=>!!I(t,n)||e.has(t,n)}))(i);export{p as deleteDB,f as openDB,l as unwrap,u as wrap};export default null;
+//# sourceMappingURL=/sm/0ecc1ee212c4ceef77427983aa99400261b08fb9b998f490bf0d417faadfc3ab.map
\ No newline at end of file