免费在线 3D 文件转换器
在浏览器中即时转换 STL、OBJ、FBX、GLTF、GLB、PLY、DAE、AMF 和 3MF。导出到 STL, OBJ, GLTF, GLB, PLY, FBX, USDZ — 100% 免费、私密,无服务器上传。
点击或拖放 3D 文件到此处
STL, OBJ, GLTF, GLB, PLY, FBX, DAE, AMF, 3MF
file.stl
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支持的格式
3D 预览
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How to Convert 3D Files Online
通过四个简单步骤转换任何 3D 模型
Upload File
Drag & drop or click to load STL, OBJ, FBX, GLTF, GLB, PLY, DAE, AMF or 3MF
Preview Model
Inspect with interactive WebGL orbit controls. Check vertex count, face count and dimensions
Choose Format
Select your target format: STL, OBJ, GLTF, GLB, PLY, FBX or USDZ
Download
Converted file downloads instantly to your device — no email, no signup
为什么使用 Vextrude 3D 转换器?
为设计师、工程师和开发者打造
100% Private & Secure
Your 3D files never leave your device. All parsing and conversion runs entirely in your browser using WebAssembly and JavaScript — zero server uploads, zero data retention.
Instant In-Browser Conversion
Powered by Three.js and WebGL, conversions happen in milliseconds on your own hardware. No queues, no server lag — just instant results even for large meshes.
No Signup. Forever Free.
No account, no watermarks, no file size caps, no daily limits. Convert STL to OBJ, FBX to GLB, or any supported pair as many times as you need — completely free.
9 Formats Supported
Import STL, OBJ, GLTF, GLB, PLY, FBX, DAE, AMF and 3MF. Export to STL, OBJ, GLTF, GLB, PLY, FBX and USDZ — the widest format coverage of any free browser-based converter.
Works on Any Device
Runs in any modern browser on Windows, Mac, Linux, and mobile. No plugins, no installs, no admin rights — just open the page and convert.
Live 3D Preview
Inspect your model before converting with an interactive WebGL viewer. Orbit, zoom, wireframe toggle, and mesh stats help you verify your file is correct.
3D 文件格式指南
应该使用哪种格式?快速参考
| Format | Best For | Import | Export | Notes |
|---|---|---|---|---|
| STL | 3D printing, CAD | ✓ | ✓ | Geometry only, no textures. Binary or ASCII. |
| OBJ | Cross-app exchange | ✓ | ✓ | Widely compatible. Supports materials via .mtl sidecar. |
| GLTF | Web & real-time 3D | ✓ | ✓ | JSON-based. The "JPEG of 3D" — ideal for web apps. |
| GLB | Web, AR, sharing | ✓ | ✓ | Binary GLTF, single-file. Embeds textures. |
| PLY | Point clouds, scanning | ✓ | ✓ | Supports vertex colors. Common in LiDAR/photogrammetry. |
| FBX | Game engines, animation | ✓ | ✓ | Standard for Unity/Unreal. Export is ASCII FBX 7.4. |
| USDZ | Apple AR / QuickLook | — | ✓ | Apple's AR format for iOS & macOS Quick Look. |
| DAE | Blender, SketchUp | ✓ | — | Collada XML format. Convert to GLB for web use. |
| AMF | Advanced 3D printing | ✓ | — | XML-based successor to STL. Convert to STL/OBJ. |
| 3MF | Microsoft 3D printing | ✓ | — | Microsoft's modern print format. Convert to STL/OBJ. |
常见用例
热门工作流程
■ STL to OBJ — 3D Print to General Use
STL files from slicers like Cura or PrusaSlicer are great for printing but poor for rendering. Convert to OBJ to bring your model into Blender, Cinema 4D, or any DCC tool without losing geometry fidelity.
■ FBX to GLB — Game Asset to Web
FBX is the standard in Unity and Unreal Engine, but it's heavy for web. Convert to GLB for use in Three.js, Babylon.js, React Three Fiber, or any WebGL framework with a fraction of the file size.
■ OBJ / GLB to USDZ — Web to Apple AR
USDZ is required for iOS AR Quick Look and Apple Vision Pro experiences. Convert your existing OBJ or GLB models to USDZ to let users preview products in their space directly from Safari — no app download needed.
■ DAE / AMF / 3MF to STL — Legacy to Print-Ready
Older CAD exports in Collada (DAE), AMF, or 3MF sometimes aren't accepted by slicer software. Convert to binary STL for universal compatibility with Cura, PrusaSlicer, Bambu Studio, and all major 3D printing tools.
常见问题
关于 Vextrude 3D 转换器您需要了解的一切
支持哪些 3D 文件格式的导入和导出?
导入:STL、OBJ、GLTF、GLB、PLY、FBX、DAE (Collada)、AMF 和 3MF。导出:STL(二进制)、OBJ(Wavefront)、GLTF(JSON)、GLB(二进制)、PLY、FBX(ASCII 7.4)和 USDZ(Apple AR)。这使其成为在线最完整的免费 3D 转换器之一。
我的 3D 文件会上传到服务器吗?
不会——从不。所有加载、解析和导出完全在浏览器中使用 JavaScript 和 WebGL 运行。您的文件永远不会离开您的电脑。这使该工具对机密或专有的 3D 设计、IP 敏感资产和专业用途都很安全。
我可以转换的最大文件大小是多少?
该工具没有强制的文件大小限制。实际限制取决于您浏览器的可用内存。在大多数 8GB+ 内存的现代电脑上,最大 100MB 的文件运行良好。非常大的网格(数百万个多边形)可能需要几秒钟才能在 WebGL 预览中加载和显示。
纹理、颜色和材质会被保留吗?
几何体(顶点和面)始终完全保留。导出到 PLY 和 GLB 时保留顶点颜色。GLB/GLTF 输入中嵌入的纹理在导出回 GLB/GLTF 时会传递。STL 和 FBX(ASCII)等格式仅携带几何体。要实现完整的材质保真度,GLB → GLB 是无损往返。
GLTF 和 GLB 有什么区别?
GLTF(GL Transmission Format)是一个 JSON 文本文件,可能引用外部二进制缓冲区和图像文件。GLB 是二进制容器版本,将所有数据(几何体、材质和纹理)打包到一个 .glb 文件中。对于共享或 Web 部署,GLB 几乎总是更好的选择,因为它是一个自包含的单文件。
如何将 STL 转换为 OBJ?
将 .stl 文件拖到上方上传区,等待 3D 预览加载,点击 OBJ 格式卡片,然后点击"转换并下载"。.obj 文件将立即保存到您的下载文件夹。整个过程对大多数文件而言不到 5 秒。
我可以将 FBX 转换为 GLB 用于 Three.js 或 Unity WebGL 吗?
可以。拖入您的 .fbx 文件,选择 GLB 作为输出格式,然后下载。GLB 是 Three.js、Babylon.js、React Three Fiber 和 Unity WebGL 构建的推荐格式。它比 FBX 小,通过 HTTP 加载更快,所有 WebGL 引擎都原生支持。
USDZ 是什么?我什么时候应该导出到它?
USDZ 是 Apple 的 Universal Scene Description zip 格式,用于 iPhone、iPad 和 Apple Vision Pro 上的 AR Quick Look。当您希望用户通过 iOS Safari 在真实环境中预览 3D 对象时,请导出为 USDZ——无需应用。它非常适合电子商务产品可视化和 AR 营销。
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