免费 · 无需注册 · 9 种格式

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。

STL OBJ FBX GLTF GLB PLY USDZ DAE AMF 3MF

点击或拖放 3D 文件到此处

STL, OBJ, GLTF, GLB, PLY, FBX, DAE, AMF, 3MF

转换为

STL
Binary
OBJ
Wavefront
GLTF
JSON
GLB
Binary
PLY
Polygon
USDZ
Apple AR
FBX
Autodesk
就绪 — 加载 3D 文件以开始

导出前变换

X
Y
Z

支持的格式

STL 3D printing
OBJ Wavefront
GLTF GL Transmission
GLB Binary GLTF
PLY 3D scanning
USDZ Apple AR
FBX Autodesk
DAE Import only
AMF Import only
3MF Import only

3D 预览

WebGL

上传 3D 文件以查看预览

How to Convert 3D Files Online

通过四个简单步骤转换任何 3D 模型

STEP 1

Upload File

Drag & drop or click to load STL, OBJ, FBX, GLTF, GLB, PLY, DAE, AMF or 3MF

STEP 2

Preview Model

Inspect with interactive WebGL orbit controls. Check vertex count, face count and dimensions

STEP 3

Choose Format

Select your target format: STL, OBJ, GLTF, GLB, PLY, FBX or USDZ

STEP 4

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。