Which file formats are supported?

Binary and ASCII STL, OBJ (n-gons triangulated), GLB and glTF 2.0.

Are the vertex and triangle counts exact?

Yes. Statistics always reflect the full model even when the preview is sampled.

Can Draco or meshopt compressed geometry be viewed?

No. Compressed meshes cannot be decoded server-side; only structure, materials and animations are reported.

How do I interact with the 3D viewer?

Drag to rotate, scroll to zoom. The chosen render mode sets shaded, wireframe or normals display.

What is the upload size limit?

Files up to 26 214 400 bytes are accepted.

Elysia Tools

Navigation

Media

3D Model Viewer & Inspector

Upload an STL, OBJ, GLB or glTF model: exact vertex/triangle counts, bounding-box dimensions, materials, animations and node tree, plus an interactive Three.js viewer (rotate, zoom, shaded/wireframe/normals).

Details

What this tool helps you do

Parsers run server-side without three.js: binary STL (80-byte header + uint32 count + 50 B/triangle), ASCII STL vertex scan, OBJ with n-gon fan triangulation and 1-based/negative indices, and the glTF 2.0 container (JSON + BIN chunks, accessor decoding for all component types with byteStride support). The embedded preview is capped at 80k triangles via uniform stride sampling; statistics stay exact. Draco/meshopt-compressed geometry cannot be decoded server-side and is reported as structure only.

Execution

Run this tool

Fill in the form, run the tool, and review the result in one place.

Prepared example runs

Click an example to fill the form automatically. File inputs still need an upload.

2 examples

Inspect a GLB with an indexed cube and one material

The sample GLB (24-vertex cube, 36 indices → 12 triangles, single “Red” material, 2-node scene) is decoded with bounding box 1 × 1 × 1 and an interactive shaded viewer.

<section class="mdv">glTF binary (GLB) v2 · 12 triangles · 24 vertex slots · 1 × 1 × 1 bbox · material Red</section>

ASCII STL 40 × 40 × 40 calibration cube

The ASCII STL sample (12 facets, vertices spanning −20…20 on X/Y and 0…40 on Z) parses to 12 triangles and a 40 × 40 × 40 bounding box, shown in wireframe mode.

<section class="mdv">STL (ASCII) · 12 triangles · 40 × 40 × 40 bounding box · wireframe viewer</section>

Inputs

Set the required fields, then run the tool.

4 options

FilesUpload source files for this workflow.1

3D model file (STL / OBJ / GLB / glTF)fileRequired

Single file max size: 25 MBSupported types: .stl, .obj, .gltf, .glb, model/stl, application/sla, application/vnd.ms-pki.stl, model/obj, model/gltf+json, model/gltf-binary, text/plain, application/octet-stream

SettingsAdjust formats, ranges, numbers, and modes.2

Initial render modeselectOptionalViewer backgroundselectOptional

TogglesEnable or disable optional behavior.1

Auto-rotatecheckboxOptionalEnabled when checked

Result

Ready for a run

Run the tool to preview files, text, structured data, or streamed output here.

Samples

3D Model Viewer & Inspector

What this tool helps you do

Run this tool

Prepared example runs

Inputs

Result

Examples that match this tool

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Prepared example runs

Inputs

Result

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Inspect a GLB cube with one material

2. Measure an ASCII STL calibration cube

FAQ

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