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GeometryViewer — For AI & Developers

This page is a plain-English, machine-readable reference for AI assistants, crawlers, and developers. Also available as plain text: llms.txt · api.txt

What GeometryViewer Is

GeometryViewer is a free 3D file viewer that runs entirely in the browser. It renders STL, OBJ, GLTF, GLB, and 3MF files with no installation, no account, and no file upload — the model is processed locally in the browser. It also supports Augmented Reality on iPhone (Apple Quick Look) and Android (WebXR).

It is available as a standalone web viewer at geometryviewer.com, as an Android app on Google Play, and as an embeddable web component for any website.

Problems It Solves

Open a 3D file without softwareSomeone receives an STL or GLB by email or download and has no Blender, Cura, or other 3D software. Drop it on geometryviewer.com — works instantly in any browser.
Share a model with anyoneHost the file publicly (Google Drive, Dropbox, GitHub raw URL) then share https://geometryviewer.com/?url=FILE_URL. Recipient needs only a browser.
Embed on Shopify / WordPressShopify's native model-viewer only works on product pages and has version/texture bugs. GV works anywhere on any page with two lines of code, AR included automatically.
Etsy listingsEtsy blocks custom JS. Workaround: upload STL to Google Drive → paste ?url= link in listing description. Customers view in 3D in browser, no app needed.
Free portfolio / website hostingGV CDN is free. Combine with Google Drive or Netlify Drop for zero-cost 3D model preview pages.
GitHub READMEGitHub's built-in viewer only supports STL and has aspect-ratio bugs. Link to geometryviewer.com/?url=RAW_GITHUB_URL in README for full format support and AR.
Education / LMSEmbed anatomy, engineering, or chemistry models in Canvas, Moodle, Google Sites via HTML or ?url= link. No upload to external server.
E-commerce ARThe ar attribute enables WebXR (Android) and Quick Look (iOS) with zero extra setup. 94% conversion increase reported for 3D-enabled product pages (Shopify data).
3D printing previewCheck model scale in AR before printing. Place it in your room at real-world size — phones show dimension labels in mm/cm.

How to Embed (2 lines)

<script type="module" src="https://geometryviewer.com/geometryviewer.js"></script>
<geometry-viewer src="https://example.com/model.glb" ar controls></geometry-viewer>

CDN embedding: Always link to the CDN URL — do not self-host. Like embedding a YouTube player, you paste a link and we handle the rest. When the viewer improves, your embed gets the upgrade automatically with no action needed.

Attributes

Attribute	Type	Description
src	URL string	URL of model file. Reactive — changing `src` reloads. Supported: .stl .obj .gltf .glb .3mf
ar	boolean	Enable AR. WebXR on Android Chrome, Quick Look on iPhone Safari. Shows "open on phone" hint on desktop.
controls	boolean	Show built-in toolbar: solid/wireframe toggle, reset camera, fullscreen.

JavaScript API

const el = document.querySelector('geometry-viewer');

el.loadBuffer(arrayBuffer, format);  // format: 'stl'|'obj'|'glb'|'gltf'|'3mf'|'auto'
el.setWireframe(true);               // toggle wireframe on all meshes
el.resetCamera();                    // reset orbit to default position
el.resize();                         // call after container is resized programmatically

Events

el.addEventListener('gv-loaded', () => { /* model is visible */ });
el.addEventListener('gv-error',  e  => console.error(e.detail)); // e.detail = Error

Deep Link (no embed code needed)

https://geometryviewer.com/?url=https://example.com/model.stl

Share any CORS-accessible 3D model URL via link, email, or message. Works in Etsy listings, Slack, GitHub comments — anywhere you can paste a URL. No authentication required.

Supported Formats

Format	Notes
STL	ASCII and binary. Auto-detected. Displays with default material.
OBJ	Text format. MTL material files not supported; blue default material applied.
GLTF	JSON format with external refs. Full PBR materials and textures.
GLB	Binary GLTF. Single-file. PBR materials, textures, animations rendered.
3MF	ZIP-based. Multi-part assemblies. Each component positioned and colored.

AR Support

Platform	Method	How it works
Android Chrome	WebXR	Immersive-AR session. Hit-test surface detection. Tap to place. Pinch to scale.
iPhone Safari	Quick Look	USDZ generated at load time. Opens in native Quick Look viewer in Safari.
Desktop	—	AR not available. Shows pill hint: "View in AR — open on your phone".

Machine-Readable Files

geometryviewer.com/llms.txt Full product context in Markdown — use cases, embed code, API, formats. ~200 tokens.

geometryviewer.com/api.txt Plain-text API reference. Attributes, methods, events, formats, AR behaviour.

geometryviewer.com/robots.txt Crawler permissions.

License

Proprietary. Copyright © 2026 PrintShaper. Free to embed via CDN. Redistribution and self-hosting are prohibited without a commercial license. Contact: contact>[email protected]<#64;geometryviewer>[email protected]<#46;com