Free technical file viewer · private by design

Drop a file.
See it instantly.

Open STL, OBJ and 3MF files directly in your browser. Inspect geometry, dimensions and mesh stats without installing software or creating an account.

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File content stays localNo accountFreeUp to 100 MB
Drop›See›Done
No file loadedReady · local processing

Drop any supported file here

STL, OBJ or 3MF. Your file is never sent to our server.

STLOBJ3MF
Up to 100 MB · processed on your device
No uploadYour file bytes stay on your device.
No accountNo project setup or model storage.
FreeNo subscription required.
Privacy you can understand

Your model stays where it belongs.

DropSee reads the selected file in your browser and sends its geometry straight to WebGL. The application does not upload your technical file to a DropSee server.

Local parsingFile bytes are handled on your device.
No file trackingFile names, contents and geometry stay on your device.
No cloud projectsClose the tab and there is no DropSee project to clean up.
Clear limitsWe disclose format and renderer limitations instead of hiding them.
How a file opens
Your deviceSTL / OBJ / 3MF
→
Browser parserJavaScript
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WebGL3D preview
Your technical file stays on this device throughout viewing.

Choose the viewer for your file.

Open STL, OBJ or 3MF with guidance and limits specific to each format.

LiveSTL ViewerBinary + ASCII mesh inspectionLiveOBJ ViewerQuick geometry inspectionLive3MF ViewerModern 3D printing container

Solve common 3D file problems.

Learn how to open, compare and verify files before printing or sharing.

How to open an STL without installing softwareFast inspection workflow and limits
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STL vs 3MFWhich exchange format should you use?
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Open OBJ without BlenderInspect geometry without a full editor
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Make technical files easier to open

Give readers a one-click path to a free viewer.

Add the badge to GitHub, documentation, lab guides or wikis so anyone can inspect supported files without installing software.

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Inspect STL, OBJ and 3MF files whenever you need them, without installing software.