Free Online STL to ZIP Converter

Our STL to ZIP file converter will take your uploaded STL file and compress it into a ZIP file, making it ideal to store or transmit your files while using less storage space and bandwidth. Our batch STL to ZIP converter can compress multiple files in a single upload. The maximum number of files that can be compressed in one go is 20.

Or drag and drop your files here to upload.
A maximum of 20 files can be uploaded at once.

Please note: Your STL file, once uploaded to our server, will be deleted 15 minutes after upload, so please download your converted STL file before this time.

Use the button above to select the STL files you wish to upload; once selected, you can click the Upload button to start the conversion. Once all your files have been converted, you will be able to download your ZIP files either individually or all together in a compressed ZIP file.

How to Convert your STL to ZIP Online?

Here are two simple steps to convert your STL to ZIP using our fast and free STL converter tool.

Upload your STL file

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

Download your ZIP

Click the download link to receive your ZIP file.

Frequently Asked Questions

How can I convert my STL file to ZIP?

First, click the "Upload..." button and select your STL file to upload. Your STL file will be uploaded to our servers. When the STL to ZIP conversion has completed, you can download your ZIP file right away.

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

We aim to process all STL to ZIP conversions as quickly as possible; this usually takes around 5 seconds; however, this can be longer for certain files, so please be patient.

How accurate is the STL to ZIP conversion?

We aim to provide the best conversion experience. Our tools are under constant review and development, with new features being added every week.

File format information for STL and ZIP

ExtensionSTL
Full NameStandard Triangle Language
Type3D Model
Mime Typeapplication/vnd.ms-pki.stl
FormatText
Opens WithBlender, MeshLab, CAD Assistant, DAZ Studio

The STL, or Standard Triangle Language, file format has been around since the '80s and is supported by most modern 3D modelling applications. In particular, the STL format has become something of a standard format within the area of 3D printing, despite the rise of more modern formats such as 3MF.

STL files come in two flavours: binary or text format. The text format is human-readable, making it easy to perform manual edits, but can lead to very large file sizes. As you can imagine, the binary format is much more compact and represents the majority of the STL files you are likely to encounter.

The format itself is very simple; the 3D model is represented by a sequential list of triangles, with each triangle defined with 3 points consisting of their X, Y, and Z positions, along with an additional vector that contains the face normal (the direction the face is pointing). There is an additional attribute block for each triangle; however, this is largely unused and thus unsupported.

STL Converter Capabilities

When converting 3D model or mesh files using our STL converter, we will attempt to convert colour materials into a suitable format for use in the converted file.

ExtensionZIP
Full NameZIP Archive
TypeArchive
Mime Typeapplication/zip
FormatBinary

A ZIP file is a compressed file container format that has been around for many years and has become a universal standard for compressing multiple files into a single package. Along with compressing individual files, ZIP files can also compress entire directory structures.

The compression algorithm of the ZIP format enables highly efficient compression of most file types, whether they be text, music, or images. ZIP files are a great way to group together and compress multiple files for easy storage and distribution.

As ZIP files have become a standard format for file compression, most operating systems and platforms are capable of creating and opening ZIP files without any additional software.

Information for converting from STL to ZIP

Our STL file converter will compress your uploaded file to a ZIP archive, ready for download. This tool is great for compressing those large STL files and saving yourself some hard drive space. ZIP archives can be opened later on in most operating systems, usually with no additional software.

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