Free Online Viewer app of STL format drawing files

Opens STL drawings for free from any device, with a modern browser like Chrome, Opera or Firefox.

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Aspose STL Viewer app to open and view STL files. View STL drawing online on any platform: Windows, Mac OS, Linux, Android, iOs online from everywhere.

If you want to access your drawings programmatically please check Aspose.CAD documentation.

View your documents online


How to view STL files

  • Click inside the file drop area to upload STL drawing or drag & drop your STL file.
  • Your STL file will be automatically rendered to view instantly
  • View thumbnails of STL files. Its layouts with properties will be on preview
  • Download STL drawing file and all its layers as raster, vector image including PDF format.
  • View and navigate between layouts. Set page view zoom-in or zoom-out.


  • ❓ How can I open and view STL drawing?
    First, you need to select a file with your plot or model: drag & drop your STL drawing or click inside the white area to choose a file.
  • ⏱️ How long does it take render STL file?
    This viewer works fast but it depends on a drawing size. A redering of STL drawing may take from a few seconds to a minute.
  • 🛡️ Is it safe to upload my STL files to free Aspose STL viewer?
    Of course! The file will be available instantly and visible to you only. We delete uploaded files after 24 hours.
  • 💻 Can I view STL on Linux, Mac OS or Android?
    Yes, you can use free Aspose viewer on any operating system that has a web browser. Our STL viewer works online and does not require any software installation.

STL Stereolithography

STL, abbreviation for stereolithrography, is an interchangeable file format that represents 3-dimensional surface geometry. The file format finds its usage in several fields such as rapid prototyping, 3D printing and computer-aided manufacturing. It represents a surface as a series of small triangles, known as facets, where each facet is described by a perpendicular direction and three points representing the vertices of the triangle.

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