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Free 3D Tools for Everyone: Convert & View 3D Files Online

Icon collection of digital tools

At 3D-scan.online, we’re excited to roll out a new set of free tools built to help makers, 3D enthusiasts, and professionals cut through the confusion of endless file formats. Whether you’re preparing models for 3D printing, sharing assets for AR, or simply want to check your 3D files quickly in the browser, our tools act like a “Babel Fish” for 3D formats—making them accessible, compatible, and ready for your workflow.

Looking for free 3D utilities to simplify the way you work?

At 3D-scan.online we now offer two powerful, easy-to-use solutions:

1️⃣ A universal 3D File Converter that supports a wide range of formats—with the added bonus of exclusive Blender export.

2️⃣ An Online 3D Viewer to preview your models instantly in your browser, no installs needed.

In this post, you’ll see how these tools compare to other online options, when to use them, and why they’re especially valuable for makers, designers, and 3D scanning fans.

Free 3D File Converter – with Exclusive Blender Support

Our Free 3D File Converter allows you to quickly convert between the most common 3D file formats.
The highlight: we are the only free online converter that supports direct export into Blender’s .blend file format.

When is this useful?

  • You scanned an object in .stl but want to animate it in Blender → Convert to .blend.
  • You downloaded a 3D model in .obj and need a smaller .ply file for 3D printing.
  • You are working with multiple collaborators using different 3D tools and need a quick cross-platform solution.

Free Online 3D Viewer – See Your Models in the Browser

The Online 3D Viewer makes it easy to check your files before importing them into 3D software. No downloads, no installations – just drag & drop your file into the browser and view it instantly.

When is this useful?

  • You want to double-check a model you received from a colleague before opening heavy CAD software.
  • You need to preview files on the go (tablet, laptop, or shared PC).
  • You are not sure if the file is intact and want a fast sanity check.

How Our Tools Compare to Other Online Options

Here’s a quick overview:

ToolFormats SupportedBlender ExportBrowser ViewerProsCons
3D-scan.online ConverterMany formats✅ UniqueFree, fast, unique .blend exportLimited to most common formats (by design, for simplicity)
3D-scan.online ViewerMany formatsNo installation, instant previewNot a full editing tool (view only)
AnyConvMany formatsWide variety of formatsAds, file size limits, no .blend
Aspose 3D ConverterMany formatsAPI integration possibleLimited free use, no Blender support
3DViewer.netSTL, OBJ, 3MFFast online viewerLimited supported formats

Which Tool Should You Use?

  • Use our Free 3D File Converter → when you need Blender compatibility, or to quickly change between standard formats for 3D printing, animation, or scanning.
  • Use our Free Online 3D Viewer → when you need a fast preview, want to avoid software installation, or need to validate models on the go.
  • Use other tools → when you need rare, exotic formats or API integration into automated workflows.

Try It Yourself – and Tell Us What You Think!

Both tools are available for free right now at 3d-scan.online/free-tools/.
We’d love to hear your feedback: What works well for you? What features would you like to see next?

👉 Test the Free Tools today and share your experience in the comments below!


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