Convert & view 3D files — right in your browser

Drag in an STL, OBJ, PLY, glTF/GLB or 3MF file to view it in 3D or convert it to another format. Everything runs on your own machine — your file is never uploaded to a server. Free, no signup, no ads.

How it works

1 · Drop a fileChoose or drag a 3D model in. It loads straight into this tab — nothing is sent anywhere.

2 · View or convertSpin it around to inspect it, then pick a target format if you want to convert.

3 · DownloadYour converted file saves to your machine. No account, no waiting on a queue.

Every conversion & viewer

STL → OBJ OBJ → STL STL → 3MF 3MF → STL STL → GLB GLB → STL GLB → OBJ OBJ → GLB PLY → STL STL → PLY STL viewer OBJ viewer GLB / glTF viewer STL → STEP (the honest truth)

Why no upload matters

Private by design. Most online converters upload your file to their servers. Cadify does the work in your browser using WebGL/WASM, so proprietary parts, client models, and unreleased designs never leave your computer. It's also faster — no upload-then-download round trip.

Embed the 3D viewer on your own site — free

Selling printable models, writing a build log, or documenting a part? Drop in a live 3D viewer your visitors can spin — like embedding a video. Paste this where you want it:

<div class="cadify-viewer" data-src="https://your-site.com/model.stl" data-height="480"></div> <script src="https://cadify.com/embed.js" async></script>