diff --git a/app/src/constants.ts b/app/src/constants.ts
index d14997e76..f1241320b 100644
--- a/app/src/constants.ts
+++ b/app/src/constants.ts
@@ -67,7 +67,7 @@ export abstract class Constants {
 
     // size
     public static readonly SIZE_DATABASE_MAZ_SIZE: number = 102400;
-    public static readonly SIZE_UPLOAD_TIP_SIZE: number = 256 * 1024 * 1024;
+    public static readonly SIZE_UPLOAD_TIP_SIZE: number = 268435456; // 256 M
     public static readonly SIZE_SCROLL_TB: number = 24;
     public static readonly SIZE_SCROLL_STEP: number = 256;
     public static readonly SIZE_LINK_TEXT_MAX: number = 64;
diff --git a/app/src/protyle/method.ts b/app/src/protyle/method.ts
index e9804fa05..c19b361da 100644
--- a/app/src/protyle/method.ts
+++ b/app/src/protyle/method.ts
@@ -8,7 +8,6 @@ import { abcRender } from "./render/abcRender";
 import { htmlRender } from "./render/htmlRender";
 import { mindmapRender } from "./render/mindmapRender";
 import { plantumlRender } from "./render/plantumlRender";
-import { avRender } from "./render/av/render";
 import "../assets/scss/export.scss";
 
 class Protyle {
@@ -30,7 +29,7 @@ class Protyle {
     public static mindmapRender = mindmapRender;
     /** UML 渲染 */
     public static plantumlRender = plantumlRender;
-    public static avRender = avRender;
+    /** html 块渲染 */
     public static htmlRender = htmlRender;
 }
 
diff --git a/app/src/protyle/render/highlightRender.ts b/app/src/protyle/render/highlightRender.ts
index 6385099d9..9da6206bb 100644
--- a/app/src/protyle/render/highlightRender.ts
+++ b/app/src/protyle/render/highlightRender.ts
@@ -1,7 +1,7 @@
 import {addScript} from "../util/addScript";
 import {Constants} from "../../constants";
 import {focusByOffset} from "../util/selection";
-import {setCodeTheme} from "../../util/assets";
+import {setCodeTheme} from "./util";
 
 export const highlightRender = (element: Element, cdn = Constants.PROTYLE_CDN, zoom = 1) => {
     let codeElements: NodeListOf<Element>;
diff --git a/app/src/protyle/render/util.ts b/app/src/protyle/render/util.ts
index 358a115f7..cc9de45a5 100644
--- a/app/src/protyle/render/util.ts
+++ b/app/src/protyle/render/util.ts
@@ -1,5 +1,6 @@
 import {isInEmbedBlock} from "../util/hasClosest";
 import {Constants} from "../../constants";
+import {addStyle} from "../util/addStyle";
 
 export const genIconHTML = (element?: false | HTMLElement, actions = ["edit", "more"]) => {
     let enable = true;
@@ -47,3 +48,26 @@ export const processClonePHElement = (item: Element) => {
     });
     return item;
 };
+
+export const setCodeTheme = (cdn = Constants.PROTYLE_CDN) => {
+    const protyleHljsStyle = document.getElementById("protyleHljsStyle") as HTMLLinkElement;
+    let css;
+    if (window.siyuan.config.appearance.mode === 0) {
+        css = window.siyuan.config.appearance.codeBlockThemeLight;
+        if (!Constants.SIYUAN_CONFIG_APPEARANCE_LIGHT_CODE.includes(css)) {
+            css = "default";
+        }
+    } else {
+        css = window.siyuan.config.appearance.codeBlockThemeDark;
+        if (!Constants.SIYUAN_CONFIG_APPEARANCE_DARK_CODE.includes(css)) {
+            css = "github-dark";
+        }
+    }
+    const href = `${cdn}/js/highlight.js/styles/${css}.min.css?v=11.11.1`;
+    if (!protyleHljsStyle) {
+        addStyle(href, "protyleHljsStyle");
+    } else if (!protyleHljsStyle.href.includes(href)) {
+        protyleHljsStyle.remove();
+        addStyle(href, "protyleHljsStyle");
+    }
+};
diff --git a/app/src/util/assets.ts b/app/src/util/assets.ts
index 6cf9df87f..5cfaefe83 100644
--- a/app/src/util/assets.ts
+++ b/app/src/util/assets.ts
@@ -7,6 +7,7 @@ import {exportLayout} from "../layout/util";
 /// #endif
 import {fetchPost} from "./fetch";
 import {isInAndroid, isInHarmony, isInIOS, isIPad, isIPhone, isMac, isWin11} from "../protyle/util/compatibility";
+import {setCodeTheme} from "../protyle/render/util";
 
 export const loadAssets = (data: Config.IAppearance) => {
     const htmlElement = document.getElementsByTagName("html")[0];
@@ -319,29 +320,6 @@ export const setInlineStyle = async (set = true, servePath = "../../../") => {
     return style;
 };
 
-export const setCodeTheme = (cdn = Constants.PROTYLE_CDN) => {
-    const protyleHljsStyle = document.getElementById("protyleHljsStyle") as HTMLLinkElement;
-    let css;
-    if (window.siyuan.config.appearance.mode === 0) {
-        css = window.siyuan.config.appearance.codeBlockThemeLight;
-        if (!Constants.SIYUAN_CONFIG_APPEARANCE_LIGHT_CODE.includes(css)) {
-            css = "default";
-        }
-    } else {
-        css = window.siyuan.config.appearance.codeBlockThemeDark;
-        if (!Constants.SIYUAN_CONFIG_APPEARANCE_DARK_CODE.includes(css)) {
-            css = "github-dark";
-        }
-    }
-    const href = `${cdn}/js/highlight.js/styles/${css}.min.css?v=11.11.1`;
-    if (!protyleHljsStyle) {
-        addStyle(href, "protyleHljsStyle");
-    } else if (!protyleHljsStyle.href.includes(href)) {
-        protyleHljsStyle.remove();
-        addStyle(href, "protyleHljsStyle");
-    }
-};
-
 export const setMode = (modeElementValue: number) => {
     /// #if !MOBILE
     let mode = modeElementValue;