diff --git a/app/api/image-proxy/route.ts b/app/api/image-proxy/route.ts
new file mode 100644
index 000000000..19e041faf
--- /dev/null
+++ b/app/api/image-proxy/route.ts
@@ -0,0 +1,239 @@
+import crypto from "node:crypto";
+import { NextRequest, NextResponse } from "next/server";
+
+export const runtime = "nodejs";
+
+const DEFAULT_QUALITY = 82;
+const MAX_WIDTH = 4096;
+const MIN_WIDTH = 64;
+const MIN_QUALITY = 40;
+const MAX_QUALITY = 100;
+const FETCH_TIMEOUT_MS = 15000;
+
+type OutputFormat = "webp" | "avif" | "jpeg" | "png";
+
+function clamp(value: number, min: number, max: number): number {
+  return Math.max(min, Math.min(max, value));
+}
+
+function parsePositiveInt(value: string | null): number | null {
+  if (!value) return null;
+  const parsed = Number.parseInt(value, 10);
+  return Number.isFinite(parsed) && parsed > 0 ? parsed : null;
+}
+
+function isPrivateIpv4(hostname: string): boolean {
+  const parts = hostname.split(".").map((part) => Number.parseInt(part, 10));
+  if (parts.length !== 4 || parts.some((part) => Number.isNaN(part))) {
+    return false;
+  }
+
+  if (parts[0] === 10) return true;
+  if (parts[0] === 127) return true;
+  if (parts[0] === 169 && parts[1] === 254) return true;
+  if (parts[0] === 192 && parts[1] === 168) return true;
+  if (parts[0] === 172 && parts[1] >= 16 && parts[1] <= 31) return true;
+  return false;
+}
+
+function isBlockedHost(hostname: string): boolean {
+  const normalized = hostname.trim().toLowerCase();
+  if (!normalized) return true;
+
+  if (
+    normalized === "localhost" ||
+    normalized === "::1" ||
+    normalized.endsWith(".local") ||
+    normalized.endsWith(".internal")
+  ) {
+    return true;
+  }
+
+  if (isPrivateIpv4(normalized)) {
+    return true;
+  }
+
+  if (normalized.startsWith("fc") || normalized.startsWith("fd") || normalized.startsWith("fe80")) {
+    return true;
+  }
+
+  return false;
+}
+
+function inferSourceFormat(contentType: string): OutputFormat {
+  const lower = contentType.toLowerCase();
+  if (lower.includes("avif")) return "avif";
+  if (lower.includes("webp")) return "webp";
+  if (lower.includes("png")) return "png";
+  return "jpeg";
+}
+
+function resolveOutputFormat(
+  requested: string | null,
+  sourceContentType: string,
+  hasAlpha: boolean | undefined
+): OutputFormat {
+  if (requested === "avif" || requested === "webp" || requested === "jpeg" || requested === "png") {
+    if (requested === "jpeg" && hasAlpha) {
+      return "webp";
+    }
+    return requested;
+  }
+
+  if (hasAlpha) {
+    return "webp";
+  }
+  return inferSourceFormat(sourceContentType);
+}
+
+function buildEtag(input: string): string {
+  return `"${crypto.createHash("sha1").update(input).digest("hex")}"`;
+}
+
+export async function GET(request: NextRequest) {
+  const { searchParams } = request.nextUrl;
+  const rawUrl = (searchParams.get("url") || "").trim();
+  if (!rawUrl) {
+    return NextResponse.json({ error: "Missing url parameter" }, { status: 400 });
+  }
+
+  let target: URL;
+  try {
+    target = new URL(rawUrl);
+  } catch {
+    return NextResponse.json({ error: "Invalid image url" }, { status: 400 });
+  }
+
+  if (target.protocol !== "http:" && target.protocol !== "https:") {
+    return NextResponse.json({ error: "Only http/https is supported" }, { status: 400 });
+  }
+
+  if (isBlockedHost(target.hostname)) {
+    return NextResponse.json({ error: "Blocked target host" }, { status: 403 });
+  }
+
+  const requestedWidth = parsePositiveInt(searchParams.get("w"));
+  const requestedQuality = parsePositiveInt(searchParams.get("q"));
+  const width = requestedWidth ? clamp(requestedWidth, MIN_WIDTH, MAX_WIDTH) : null;
+  const quality = requestedQuality ? clamp(requestedQuality, MIN_QUALITY, MAX_QUALITY) : DEFAULT_QUALITY;
+  const requestedFormat = searchParams.get("f");
+
+  const cacheKey = `${target.toString()}|${width || "auto"}|${quality}|${requestedFormat || "auto"}`;
+  const etag = buildEtag(cacheKey);
+  const ifNoneMatch = request.headers.get("if-none-match");
+  if (ifNoneMatch && ifNoneMatch === etag) {
+    return new NextResponse(null, {
+      status: 304,
+      headers: {
+        ETag: etag,
+        "Cache-Control": "public, max-age=31536000, immutable, stale-while-revalidate=86400",
+      },
+    });
+  }
+
+  let upstreamResponse: Response;
+  try {
+    upstreamResponse = await fetch(target.toString(), {
+      signal: AbortSignal.timeout(FETCH_TIMEOUT_MS),
+      headers: {
+        Accept: "image/avif,image/webp,image/apng,image/*,*/*;q=0.8",
+      },
+    });
+  } catch (error) {
+    console.error("[ImageProxy] Upstream fetch failed:", error);
+    return NextResponse.json({ error: "Failed to fetch upstream image" }, { status: 502 });
+  }
+
+  if (!upstreamResponse.ok) {
+    return NextResponse.json(
+      { error: `Upstream responded with ${upstreamResponse.status}` },
+      { status: 502 }
+    );
+  }
+
+  const contentType = upstreamResponse.headers.get("content-type") || "application/octet-stream";
+  if (!contentType.toLowerCase().startsWith("image/")) {
+    return NextResponse.json({ error: "Upstream is not an image" }, { status: 400 });
+  }
+
+  const originalBuffer = Buffer.from(await upstreamResponse.arrayBuffer());
+  const isSvg = contentType.toLowerCase().includes("image/svg");
+  const isGif = contentType.toLowerCase().includes("image/gif");
+
+  if ((isSvg || isGif) && !width && !requestedFormat) {
+    return new NextResponse(originalBuffer, {
+      status: 200,
+      headers: {
+        "Content-Type": contentType,
+        "Content-Length": String(originalBuffer.length),
+        ETag: etag,
+        "Cache-Control": "public, max-age=31536000, immutable, stale-while-revalidate=86400",
+      },
+    });
+  }
+
+  if (isSvg || isGif) {
+    return new NextResponse(originalBuffer, {
+      status: 200,
+      headers: {
+        "Content-Type": contentType,
+        "Content-Length": String(originalBuffer.length),
+        ETag: etag,
+        "Cache-Control": "public, max-age=31536000, immutable, stale-while-revalidate=86400",
+      },
+    });
+  }
+
+  try {
+    const sharp = await import("sharp");
+    const image = sharp.default(originalBuffer, { failOn: "none" }).rotate();
+    const metadata = await image.metadata();
+    const outputFormat = resolveOutputFormat(requestedFormat, contentType, metadata.hasAlpha);
+    const transformed = width
+      ? image.resize({
+          width,
+          fit: "inside",
+          withoutEnlargement: true,
+        })
+      : image;
+
+    let outputBuffer: Buffer;
+    let outputContentType = contentType;
+
+    if (outputFormat === "avif") {
+      outputBuffer = await transformed.avif({ quality }).toBuffer();
+      outputContentType = "image/avif";
+    } else if (outputFormat === "webp") {
+      outputBuffer = await transformed.webp({ quality }).toBuffer();
+      outputContentType = "image/webp";
+    } else if (outputFormat === "png") {
+      outputBuffer = await transformed.png({ compressionLevel: 9 }).toBuffer();
+      outputContentType = "image/png";
+    } else {
+      outputBuffer = await transformed.jpeg({ quality, mozjpeg: true }).toBuffer();
+      outputContentType = "image/jpeg";
+    }
+
+    return new NextResponse(outputBuffer, {
+      status: 200,
+      headers: {
+        "Content-Type": outputContentType,
+        "Content-Length": String(outputBuffer.length),
+        ETag: etag,
+        Vary: "Accept",
+        "Cache-Control": "public, max-age=31536000, immutable, stale-while-revalidate=86400",
+      },
+    });
+  } catch (error) {
+    console.error("[ImageProxy] Transform failed:", error);
+    return new NextResponse(originalBuffer, {
+      status: 200,
+      headers: {
+        "Content-Type": contentType,
+        "Content-Length": String(originalBuffer.length),
+        ETag: etag,
+        "Cache-Control": "public, max-age=31536000, immutable, stale-while-revalidate=86400",
+      },
+    });
+  }
+}
diff --git a/app/canvas/[id]/page.tsx b/app/canvas/[id]/page.tsx
index 1209a1f2e..ec9fd4c45 100644
--- a/app/canvas/[id]/page.tsx
+++ b/app/canvas/[id]/page.tsx
@@ -683,139 +683,142 @@ export default function CanvasEditorPage({ params }: PageProps) {
             </div>
         </div>
 
-        {/* 5. Floating Bottom Toolbar (Left) */}
-        <div className="absolute left-4 top-1/2 -translate-y-1/2 z-20">
-           <div className="flex flex-col items-center gap-2 p-1.5 rounded-2xl border bg-background/80 backdrop-blur-md shadow-2xl">
-              {/* Tools: Select, Pan, Add Text, Add Image */}
-              <Tooltip>
-                <TooltipTrigger asChild>
-                  <Button
-                    variant={tool === 'select' ? 'secondary' : 'ghost'}
-                    size="icon"
-                    onClick={() => setTool('select')}
-                    className={cn("rounded-xl h-9 w-9", tool === 'select' && "bg-primary text-primary-foreground hover:bg-primary/90")}
-                  >
-                    <MousePointer className="h-4 w-4" />
-                  </Button>
-                </TooltipTrigger>
-                <TooltipContent side="right">选择 (V)</TooltipContent>
-              </Tooltip>
-              
-              <Tooltip>
-                <TooltipTrigger asChild>
-                  <Button
-                    variant={tool === 'pan' ? 'secondary' : 'ghost'}
-                    size="icon"
-                    onClick={() => setTool('pan')}
-                    className={cn("rounded-xl h-9 w-9", tool === 'pan' && "bg-primary text-primary-foreground hover:bg-primary/90")}
-                  >
-                    <Hand className="h-4 w-4" />
-                  </Button>
-                </TooltipTrigger>
-                <TooltipContent side="right">平移 (H)</TooltipContent>
-              </Tooltip>
+        {/* 5. Floating Toolbar (Bottom) */}
+        <div className="absolute bottom-5 left-1/2 z-20 -translate-x-1/2">
+          <div className="flex items-center gap-1.5 rounded-[28px] border bg-background/88 px-3 py-2 shadow-2xl backdrop-blur-md">
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant={tool === "select" ? "secondary" : "ghost"}
+                  size="icon"
+                  onClick={() => setTool("select")}
+                  className={cn("h-10 w-10 rounded-2xl", tool === "select" && "bg-primary text-primary-foreground hover:bg-primary/90")}
+                >
+                  <MousePointer className="h-4 w-4" />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent side="top">选择 (V)</TooltipContent>
+            </Tooltip>
 
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant={tool === "pan" ? "secondary" : "ghost"}
+                  size="icon"
+                  onClick={() => setTool("pan")}
+                  className={cn("h-10 w-10 rounded-2xl", tool === "pan" && "bg-primary text-primary-foreground hover:bg-primary/90")}
+                >
+                  <Hand className="h-4 w-4" />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent side="top">平移 (H)</TooltipContent>
+            </Tooltip>
+
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant="ghost"
+                  size="icon"
+                  onClick={handleAddImageNode}
+                  className="h-10 w-10 rounded-2xl"
+                >
+                  <ImagePlus className="h-4 w-4" />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent side="top">添加图片</TooltipContent>
+            </Tooltip>
+
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant="ghost"
+                  size="icon"
+                  onClick={handleAddTextNode}
+                  className="h-10 w-10 rounded-2xl"
+                >
+                  <Type className="h-4 w-4" />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent side="top">添加文本</TooltipContent>
+            </Tooltip>
+
+            {siteSettingsData?.realtimeCanvasEnabled === true &&
+            siteSettingsData?.realtimeCanvasServiceEnabled !== false ? (
               <Tooltip>
                 <TooltipTrigger asChild>
                   <Button
                     variant="ghost"
                     size="icon"
-                    onClick={() => router.push('/canvas?new=1')}
-                    className="rounded-xl h-9 w-9"
+                    onClick={() => router.push(`/canvas/${id}/realtime`)}
+                    className="h-10 w-10 rounded-2xl"
                   >
-                    <Plus className="h-4 w-4" />
+                    <PenTool className="h-4 w-4" />
                   </Button>
                 </TooltipTrigger>
-                <TooltipContent side="right">新建画布</TooltipContent>
+                <TooltipContent side="top">实时画布</TooltipContent>
               </Tooltip>
+            ) : null}
 
-              <Separator orientation="horizontal" className="w-5 my-0.5" />
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant="ghost"
+                  size="icon"
+                  onClick={() => router.push(`/canvas/${id}/model3d`)}
+                  className="h-10 w-10 rounded-2xl"
+                >
+                  <Box className="h-4 w-4" />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent side="top">3D生成</TooltipContent>
+            </Tooltip>
 
-              {/* 常用工具 */}
-              <Tooltip>
-                <TooltipTrigger asChild>
-                  <Button variant="ghost" size="icon" onClick={handleAddTextNode} className="rounded-xl h-9 w-9">
-                    <Type className="h-4 w-4" />
-                  </Button>
-                </TooltipTrigger>
-                <TooltipContent side="right">添加文本</TooltipContent>
-              </Tooltip>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button
+                  variant="ghost"
+                  size="icon"
+                  onClick={() => router.push('/canvas?new=1')}
+                  className="h-10 w-10 rounded-2xl"
+                >
+                  <Plus className="h-4 w-4" />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent side="top">新建画布</TooltipContent>
+            </Tooltip>
 
-              <Tooltip>
-                <TooltipTrigger asChild>
-                  <Button variant="ghost" size="icon" onClick={handleAddImageNode} className="rounded-xl h-9 w-9">
-                    <ImagePlus className="h-4 w-4" />
-                  </Button>
-                </TooltipTrigger>
-                <TooltipContent side="right">添加图片</TooltipContent>
-              </Tooltip>
+            <Separator orientation="vertical" className="mx-1 h-6" />
 
-              {siteSettingsData?.realtimeCanvasEnabled === true &&
-              siteSettingsData?.realtimeCanvasServiceEnabled !== false ? (
-                <Tooltip>
-                  <TooltipTrigger asChild>
-                    <Button
-                      variant="ghost"
-                      size="icon"
-                      onClick={() => router.push(`/canvas/${id}/realtime`)}
-                      className="rounded-xl h-9 w-9"
-                    >
-                      <PenTool className="h-4 w-4" />
-                    </Button>
-                  </TooltipTrigger>
-                  <TooltipContent side="right">实时画布</TooltipContent>
-                </Tooltip>
-              ) : null}
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button variant="ghost" size="icon" onClick={undo} disabled={!canUndo} className="h-10 w-10 rounded-2xl">
+                  <Undo2 className="h-4 w-4" />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent side="top">撤销</TooltipContent>
+            </Tooltip>
 
-              <Tooltip>
-                <TooltipTrigger asChild>
-                  <Button
-                    variant="ghost"
-                    size="icon"
-                    onClick={() => router.push(`/canvas/${id}/model3d`)}
-                    className="rounded-xl h-9 w-9"
-                  >
-                    <Box className="h-4 w-4" />
-                  </Button>
-                </TooltipTrigger>
-                <TooltipContent side="right">3D生成</TooltipContent>
-              </Tooltip>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Button variant="ghost" size="icon" onClick={redo} disabled={!canRedo} className="h-10 w-10 rounded-2xl">
+                  <Redo2 className="h-4 w-4" />
+                </Button>
+              </TooltipTrigger>
+              <TooltipContent side="top">重做</TooltipContent>
+            </Tooltip>
 
-              <Separator orientation="horizontal" className="w-5 my-0.5" />
+            <Separator orientation="vertical" className="mx-1 h-6" />
 
-              <Tooltip>
-                <TooltipTrigger asChild>
-                  <Button variant="ghost" size="icon" onClick={undo} disabled={!canUndo} className="rounded-xl h-9 w-9">
-                    <Undo2 className="h-4 w-4" />
-                  </Button>
-                </TooltipTrigger>
-                <TooltipContent side="right">撤销</TooltipContent>
-              </Tooltip>
-
-              <Tooltip>
-                <TooltipTrigger asChild>
-                  <Button variant="ghost" size="icon" onClick={redo} disabled={!canRedo} className="rounded-xl h-9 w-9">
-                    <Redo2 className="h-4 w-4" />
-                  </Button>
-                </TooltipTrigger>
-                <TooltipContent side="right">重做</TooltipContent>
-              </Tooltip>
-              
-              <Separator orientation="horizontal" className="w-5 my-0.5" />
-              
-              {/* Zoom Controls */}
-              <div className="flex flex-col items-center gap-1">
-                 <Button variant="ghost" size="icon" onClick={zoomIn} className="h-8 w-8 rounded-lg">
-                    <ZoomIn className="h-3.5 w-3.5" />
-                 </Button>
-                 <span className="text-[10px] w-10 text-center tabular-nums font-medium">
-                    {Math.round(viewport.zoom * 100)}%
-                 </span>
-                 <Button variant="ghost" size="icon" onClick={zoomOut} className="h-8 w-8 rounded-lg">
-                    <ZoomOut className="h-3.5 w-3.5" />
-                 </Button>
-              </div>
-           </div>
+            <Button variant="ghost" size="icon" onClick={zoomOut} className="h-10 w-10 rounded-2xl">
+              <ZoomOut className="h-4 w-4" />
+            </Button>
+            <span className="w-14 text-center text-sm tabular-nums font-medium text-muted-foreground">
+              {Math.round(viewport.zoom * 100)}%
+            </span>
+            <Button variant="ghost" size="icon" onClick={zoomIn} className="h-10 w-10 rounded-2xl">
+              <ZoomIn className="h-4 w-4" />
+            </Button>
+          </div>
         </div>
 
         {/* 6. 物品拾取模式覆盖层 */}
diff --git a/components/canvas/nodes/ImageNode.tsx b/components/canvas/nodes/ImageNode.tsx
index 5891a1e45..4421fcd43 100644
--- a/components/canvas/nodes/ImageNode.tsx
+++ b/components/canvas/nodes/ImageNode.tsx
@@ -29,6 +29,7 @@ import type { CanvasTextEditPayloadItem } from "@/services/canvas";
 import type { CanvasNode, ImageNodeData, ImageTextEditItem } from "@/types/canvas";
 import { cn } from "@/lib/utils";
 import { inferOriginalImageUrl } from "@/lib/image-url";
+import { buildImageProxyUrl } from "@/lib/image-delivery";
 import { AngleEditDialog } from "@/components/angle-edit-dialog";
 import { SceneFusionDialog } from "@/components/scene-fusion-dialog";
 import { ImageAnnotator } from "@/components/image-annotator";
@@ -373,6 +374,44 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
     () => Math.max(6, Math.min(10, Math.round(compareButtonVisualSize * 0.22))),
     [compareButtonVisualSize]
   );
+  const displayImageWidth = useMemo(
+    () => Math.max(640, Math.min(2200, Math.round((node.size.width || 320) * 2))),
+    [node.size.width]
+  );
+  const displayImageSrc = useMemo(
+    () =>
+      buildImageProxyUrl(data.src, {
+        width: displayImageWidth,
+        quality: 86,
+        format: "webp",
+      }),
+    [data.src, displayImageWidth]
+  );
+  const displayCompareSrc = useMemo(
+    () =>
+      buildImageProxyUrl(compareSource, {
+        width: displayImageWidth,
+        quality: 86,
+        format: "webp",
+      }),
+    [compareSource, displayImageWidth]
+  );
+  const [loadedResolution, setLoadedResolution] = useState<{ width: number; height: number } | null>(null);
+  const metadataResolution = useMemo(() => {
+    const rawWidth = Number((data.metadata as any)?.originalWidth ?? 0);
+    const rawHeight = Number((data.metadata as any)?.originalHeight ?? 0);
+    const width = Number.isFinite(rawWidth) ? Math.round(rawWidth) : 0;
+    const height = Number.isFinite(rawHeight) ? Math.round(rawHeight) : 0;
+    if (width > 0 && height > 0) {
+      return { width, height };
+    }
+    return null;
+  }, [data.metadata]);
+  const resolutionLabel = useMemo(() => {
+    const source = metadataResolution || loadedResolution;
+    if (!source) return "";
+    return `${source.width} x ${source.height}`;
+  }, [loadedResolution, metadataResolution]);
   
   // 退出拾取模式时清空状态
   useEffect(() => {
@@ -403,6 +442,32 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
     }
   }, [hasCompareSource, isThisNodePicking]);
 
+  useEffect(() => {
+    setLoadedResolution(null);
+    if (!isSelected || !data.src || metadataResolution) return;
+
+    let canceled = false;
+    const img = new Image();
+    img.onload = () => {
+      if (canceled) return;
+      const width = Math.round(img.naturalWidth || 0);
+      const height = Math.round(img.naturalHeight || 0);
+      if (width > 0 && height > 0) {
+        setLoadedResolution({ width, height });
+      }
+    };
+    img.onerror = () => {
+      if (!canceled) {
+        setLoadedResolution(null);
+      }
+    };
+    img.src = data.src;
+
+    return () => {
+      canceled = true;
+    };
+  }, [data.src, isSelected, metadataResolution]);
+
   const updateCompareSplitByClientX = useCallback((clientX: number) => {
     const frame = compareFrameRef.current;
     if (!frame) return;
@@ -1558,8 +1623,8 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
     <>
       {/* 选中时在图片上方显示标题 */}
       {isSelected && !isMultiSelected && data.src && (
-        <div className="absolute -top-7 left-0 right-0 flex items-center text-xs text-muted-foreground px-1 z-10">
-          <div className="flex items-center gap-1 min-w-0">
+        <div className="absolute -top-7 left-0 right-0 z-10 flex items-center justify-between px-1 text-xs text-[#2f7df6]">
+          <div className="flex min-w-0 items-center gap-1">
             <ImagePlus className="h-3 w-3" />
             {isEditingTitle ? (
               <Input
@@ -1585,7 +1650,7 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
               />
             ) : (
               <span
-                className="truncate max-w-[150px] cursor-text"
+                className="max-w-[150px] cursor-text truncate"
                 title="双击重命名"
                 onDoubleClick={(e) => {
                   e.stopPropagation();
@@ -1597,6 +1662,9 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
               </span>
             )}
           </div>
+          {resolutionLabel ? (
+            <span className="ml-2 shrink-0 tabular-nums tracking-wide">{resolutionLabel}</span>
+          ) : null}
         </div>
       )}
       
@@ -1636,10 +1704,17 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
                 >
                   <div className="absolute inset-0 bg-muted/30" />
                   <img
-                    src={data.src}
+                    src={displayImageSrc}
                     alt={displayTitle}
                     className="absolute inset-0 h-full w-full object-contain"
                     draggable={false}
+                    loading="lazy"
+                    decoding="async"
+                    onError={(event) => {
+                      if (event.currentTarget.src !== data.src) {
+                        event.currentTarget.src = data.src;
+                      }
+                    }}
                   />
                 </div>
                 <div
@@ -1650,10 +1725,17 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
                 >
                   <div className="absolute inset-0 bg-muted/30" />
                   <img
-                    src={compareSource}
+                    src={displayCompareSrc}
                     alt={`${displayTitle}-原图`}
                     className="absolute inset-0 h-full w-full object-contain"
                     draggable={false}
+                    loading="lazy"
+                    decoding="async"
+                    onError={(event) => {
+                      if (event.currentTarget.src !== compareSource) {
+                        event.currentTarget.src = compareSource;
+                      }
+                    }}
                   />
                 </div>
                 <div
@@ -1676,13 +1758,20 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
               </div>
             ) : (
               <img
-                src={data.src}
+                src={displayImageSrc}
                 alt={displayTitle}
                 className={cn(
                   "w-full h-full object-contain bg-muted/30",
                   isThisNodePicking ? "cursor-crosshair" : "cursor-pointer"
                 )}
                 draggable={false}
+                loading="lazy"
+                decoding="async"
+                onError={(event) => {
+                  if (event.currentTarget.src !== data.src) {
+                    event.currentTarget.src = data.src;
+                  }
+                }}
                 onClick={isThisNodePicking ? handlePickerClick : undefined}
                 onDoubleClick={(e) => {
                   if (!isThisNodePicking) {
@@ -1965,7 +2054,7 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
       {isSelected && !isMultiSelected && data.src && !isEditingTitle && typeof document !== 'undefined' && createPortal(
         <TooltipProvider delayDuration={200}>
           <div 
-            className="fixed z-[9999] flex items-center gap-1 rounded-[22px] border border-slate-300 bg-slate-50/95 px-3 py-2 text-gray-800 shadow-[0_8px_24px_rgba(15,23,42,0.14)] backdrop-blur-sm dark:border-slate-600 dark:bg-slate-900/95 dark:text-gray-100"
+            className="fixed z-[9999] flex items-center rounded-[24px] border border-slate-200 bg-white/95 px-2 py-2 text-gray-800 shadow-[0_14px_38px_rgba(15,23,42,0.16)] backdrop-blur-md dark:border-slate-700 dark:bg-slate-900/95 dark:text-gray-100"
             style={{ 
               top: getToolbarPosition().top,
               left: getToolbarPosition().left,
@@ -1976,82 +2065,93 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
             onPointerDown={(e) => e.stopPropagation()}
             onClick={(e) => e.stopPropagation()}
           >
-            <Button
-              variant="ghost"
-              disabled={isProcessing || isAddingToChat}
-              className="h-9 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-white hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
-              onClick={handleAddToChat}
-            >
-              {isAddingToChat ? (
-                <Loader2 className="mr-1.5 h-4 w-4 animate-spin" />
-              ) : (
-                <MessageSquarePlus className="mr-1.5 h-4 w-4 text-blue-600" />
-              )}
-              对话
-            </Button>
+            <div className="mr-1 inline-flex h-10 items-center gap-1.5 rounded-xl bg-slate-900 px-3 text-[13px] font-semibold text-white dark:bg-slate-100 dark:text-slate-900">
+              <Sparkles className="h-4 w-4" />
+              <span>快捷编辑</span>
+              <span className="text-white/55 dark:text-slate-500">Tab</span>
+            </div>
 
-            <div className="mx-1 h-5 w-px bg-slate-200 dark:bg-slate-700" />
+            <div className="mx-1 h-6 w-px bg-slate-200 dark:bg-slate-700" />
 
             <Button
               variant="ghost"
               disabled={isProcessing}
-              className="h-9 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-white hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
+              className="h-10 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-slate-100 hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
               onClick={() => handleAction('enhance')}
             >
               <span className="mr-1.5 rounded-md border border-slate-300 px-1.5 text-[11px] leading-5 text-slate-600 dark:border-slate-500 dark:text-slate-100">HD</span>
-              增强
+              放大
             </Button>
 
             <Button
               variant="ghost"
               disabled={isProcessing}
-              className="h-9 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-white hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
+              className="h-10 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-slate-100 hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
               onClick={() => handleAction('rmbg')}
             >
               <Scissors className="mr-1.5 h-4 w-4" />
-              抠图
+              去背景
             </Button>
 
             <Button
               variant="ghost"
               disabled={isProcessing}
-              className="h-9 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-white hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
+              className="h-10 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-slate-100 hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
+              onClick={() => handleAction('scene-fusion')}
+            >
+              <Sparkles className="mr-1.5 h-4 w-4" />
+              Mockup
+            </Button>
+
+            <Button
+              variant="ghost"
+              disabled={isProcessing}
+              className="h-10 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-slate-100 hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
               onClick={() => handleAction('watermark')}
             >
               <Eraser className="mr-1.5 h-4 w-4" />
-              去印
+              橡皮工具
             </Button>
 
             <Button
               variant="ghost"
               disabled={isProcessing}
-              className="h-9 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-white hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
-              onClick={() => {
-                setPickerMode(true, node.id);
-                toast.info('点击图片中的物品进行拾取');
-              }}
+              className="h-10 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-slate-100 hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
+              onClick={() => handleAction('resize')}
             >
-              <Crosshair className="mr-1.5 h-4 w-4 text-orange-600" />
-              拾物
+              <Maximize2 className="mr-1.5 h-4 w-4" />
+              编辑元素
             </Button>
 
             <Button
               variant="ghost"
               disabled={isProcessing || isDetectingText || isApplyingTextEdit}
-              className="h-9 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-white hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
+              className="h-10 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-slate-100 hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
               onClick={() => handleAction('text-edit')}
             >
               <Type className="mr-1.5 h-4 w-4" />
-              改字
+              编辑文字
             </Button>
 
+            <Button
+              variant="ghost"
+              disabled={isProcessing}
+              className="h-10 rounded-xl px-3 text-[13px] font-medium text-slate-700 hover:bg-slate-100 hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
+              onClick={() => handleAction('angle')}
+            >
+              <Move3D className="mr-1.5 h-4 w-4" />
+              多角度
+            </Button>
+
+            <div className="mx-1 h-6 w-px bg-slate-200 dark:bg-slate-700" />
+
             <DropdownMenu>
               <DropdownMenuTrigger asChild>
                 <Button
                   variant="ghost"
                   size="icon"
                   disabled={isProcessing}
-                  className="h-9 w-9 rounded-xl text-slate-700 hover:bg-white hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
+                  className="h-10 w-10 rounded-xl text-slate-700 hover:bg-slate-100 hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
                 >
                   <MoreHorizontal className="h-4 w-4" />
                 </Button>
@@ -2065,18 +2165,25 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
                   <RefreshCw className="mr-2 h-4 w-4" />
                   重绘
                 </DropdownMenuItem>
-                <DropdownMenuItem onClick={() => handleAction('angle')}>
-                  <Move3D className="mr-2 h-4 w-4" />
-                  视角
-                </DropdownMenuItem>
-                <DropdownMenuItem onClick={() => handleAction('resize')}>
-                  <Maximize2 className="mr-2 h-4 w-4" />
-                  调尺
+                <DropdownMenuItem onClick={() => {
+                  setPickerMode(true, node.id);
+                  toast.info('点击图片中的物品进行拾取');
+                }}>
+                  <Crosshair className="mr-2 h-4 w-4" />
+                  拾物
                 </DropdownMenuItem>
                 <DropdownMenuItem onClick={() => handleAction('note')}>
                   <StickyNote className="mr-2 h-4 w-4" />
                   备注
                 </DropdownMenuItem>
+                <DropdownMenuItem disabled={isAddingToChat} onClick={handleAddToChat}>
+                  {isAddingToChat ? (
+                    <Loader2 className="mr-2 h-4 w-4 animate-spin" />
+                  ) : (
+                    <MessageSquarePlus className="mr-2 h-4 w-4" />
+                  )}
+                  对话
+                </DropdownMenuItem>
                 <DropdownMenuSeparator />
                 <DropdownMenuItem
                   className="text-red-600 focus:text-red-700"
@@ -2092,7 +2199,7 @@ export function ImageNode({ node, isSelected }: ImageNodeProps) {
               variant="ghost"
               size="icon"
               disabled={isProcessing}
-              className="h-9 w-9 rounded-xl text-slate-700 hover:bg-white hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
+              className="h-10 w-10 rounded-xl text-slate-700 hover:bg-slate-100 hover:text-slate-900 dark:text-slate-100 dark:hover:bg-white/10"
               onClick={handleDownload}
             >
               <Download className="h-4 w-4" />
diff --git a/lib/image-delivery.ts b/lib/image-delivery.ts
new file mode 100644
index 000000000..65dc5916f
--- /dev/null
+++ b/lib/image-delivery.ts
@@ -0,0 +1,56 @@
+const IMAGE_PROXY_PATH = "/api/image-proxy";
+
+type ImageProxyFormat = "webp" | "avif" | "jpeg" | "png";
+
+export type ImageProxyOptions = {
+  width?: number;
+  quality?: number;
+  format?: ImageProxyFormat;
+};
+
+function clamp(value: number, min: number, max: number): number {
+  return Math.max(min, Math.min(max, value));
+}
+
+function normalizeWidth(width?: number): number | undefined {
+  if (!Number.isFinite(width) || !width) return undefined;
+  return clamp(Math.round(width), 64, 4096);
+}
+
+function normalizeQuality(quality?: number): number | undefined {
+  if (!Number.isFinite(quality) || !quality) return undefined;
+  return clamp(Math.round(quality), 40, 100);
+}
+
+function isAbsoluteHttpUrl(url: string): boolean {
+  return /^https?:\/\//i.test(url);
+}
+
+function isBypassUrl(url: string): boolean {
+  return (
+    !url ||
+    url.startsWith("data:") ||
+    url.startsWith("blob:") ||
+    url.startsWith(IMAGE_PROXY_PATH) ||
+    !isAbsoluteHttpUrl(url)
+  );
+}
+
+export function buildImageProxyUrl(url: string, options: ImageProxyOptions = {}): string {
+  const source = String(url || "").trim();
+  if (isBypassUrl(source)) {
+    return source;
+  }
+
+  const width = normalizeWidth(options.width);
+  const quality = normalizeQuality(options.quality);
+  const format = options.format;
+
+  const params = new URLSearchParams();
+  params.set("url", source);
+  if (width) params.set("w", String(width));
+  if (quality) params.set("q", String(quality));
+  if (format) params.set("f", format);
+
+  return `${IMAGE_PROXY_PATH}?${params.toString()}`;
+}