File Extension STL

  • Full name
    Stereolithography Format
  • Developer
  • Popularity
Have you encountered a problem with a STL file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a STL file here. In the further part of this page we have added a list of programs that should open your STL file. It is enough you choose a proper application for your operating system, download and install it.


The file extension STL identifies style libraries, ie style libraries of the graphic editing software Adobe Fireworks. These styles can be selected from the Styles window and applied to images or pels. A style usually includes color changes, filters and margin settings.

The standard STL files 'Styles.Stl' and 'Styles Defaults.Stl' are stored in the Fireworks folder under 'First Run / Styles' or 'First Run Nav Menu'. In addition, you can also create new styles in the style window and import and export STL files via the icon on the top right.

Programs which can open a STL file

How to open a STL file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the STL file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a STL file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support STL files. At this point we are looking for disk space where the application was installed in and we can link it with a STL file. Since then, our operating system will use the selected program to support all STL files.

Other issues

Despite the described problem with STL there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the STL file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the STL file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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