What is an STL file?

The STL file format describes an unstructured triangulated surface of the triangles using a 3D Cartesian coordinate system. STL files do not contain any scale information, and the units are arbitrary. We have a more detailed description of an STL file which can be found on our STL file page.

What STL formats can I convert to?

Our tool will save all STL files in binary format. Optionally, our tool will allow you to save to the non-standard color STL format.

How can I convert my ZIP file to STL?

First click the "Upload..." button, and select your ZIP file to upload. You can also drag and drop your file onto the tool. Once your file is selected, you can set any configuration options. When the ZIP to STL conversion has completed, you can download your STL file straight away.

How long does it take to convert my ZIP to STL?

We aim to process all ZIP to STL conversions as quickly as possible, this usually takes around 5 seconds but can be more for larger more complex files so please be patient.

How accurate is the ZIP to STL conversion?

We aim to create the most accurate conversions with our tools. Our tools are under constant development with new features and improvements being added every week.

Is it safe to convert my ZIP to STL on ImageToStl.com?

Yes, of course! We do not store the ZIP file you submit to us. The resulting STL file, once created, is stored for 4 hours after upload; after this time it is deleted, and the short-term download link will stop working. You can create a long-term download Url with most tools that will ensure the file is retained for 24 hours, allowing you to download the file when convenient. Our tools also come with a Delete button, allowing you to delete the file immediately.

Do I need a high-spec. computer to use the ZIP to STL converter?

No. All our conversion tools process your ZIP file on our dedicated conversion servers, meaning you can use our tools on low-spec computers, laptops, tablets, and mobile devices and receive your converted STL file quickly.

Can I convert my ZIP to STL on Windows, Linux, Android, iOS or Mac OS?

Yes! Our ZIP to STL tool will run on any system with a modern web browser. No specialist software is needed to run any of our conversion tools.

What if I am using an Ad Blocker, will that affect things?

Yes. Although you can use an Ad Blocker, if you like our ZIP conversion tool please consider white-listing our website. When an Ad Blocker is enabled there are some conversion limits and some settings may not be available when using our tools. Processing/conversion and download times will also be longer.

Can I get support with converting my ZIP to STL?

Yes. When you have converted your ZIP to STL, there is a "Feedback" option that you can use to let us know of any issues you encountered when converting your file.