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Compress Your STL File Online

Use our fast and free STL file compression tool. Our tool will take your STL file and reduce the size by using some clever compression techniques, all without losing any detail. As the STL format can be either binary or text, our compression tool will convert any text-based STL files to binary in order to enhance the compression significantly.

To get started, please upload your STL file by using the file upload button below. Once your file has been uploaded, you can select various options to control how the different compression modes can be applied to your file. You can also specify a different 3D file format to download if you wish.

How to Compress an STL 3D Model?

Here are three simple steps to compress your 3D STL model.

Upload a STL

Click the "Upload a STL File" button and select a STL to upload. The maximum file size is 100MB.

Select your Options

Set compression options, such as removing unused geometry, and also the 3D file format to save your compressed model as.

Download your 3D Model

Click the download link once completed to receive your 3D Model file.

Frequently Asked Questions

How can I compress my STL file?

First, click the "Upload..." button and select your STL file to upload. Select any compression configuration options. When your STL file has been compressed, you can download it right away.

How long does it take to compress my STL file?

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

Will my ASCII text STL file be converted to the binary format?

Yes. To enable significantly better size reduction, our STL compression tool will convert any ASCII text-format STL files to a more compact binary format.

Is it safe to compress my STL file on

Yes, of course! We do not store the STL file you submit to us. The compressed file, once created, is deleted 15 minutes after upload, and the download link will expire after this time.

Can I compress my STL file on Windows, Linux, Android, iOS or Mac OS?

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

I have several STL files to compress; can I batch compress my STL files?

Yes! Our STL compression tool supports full batch compression. You can upload up to 25 files at a time. Our tool will compress them all as quickly as possible. Once completed, you can either download the STL files individually or download them all in a single ZIP file.

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Your files are ready to download!