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File Upload Basics

Last updated on Mar 16, 2026

JustPrint allows users to upload files as part of print requests, design requests, and model-related workflows. Providing the right files helps Makers and Designers understand what you need and complete work more smoothly.

Why file uploads matter

Uploads help you:

  • Share 3D files for printing

  • Provide reference images for design work

  • Attach sample files to explain what you want

  • Improve quote accuracy and fulfillment quality

Common types of uploads

Depending on the workflow, you may be able to upload:

  • 3D model files

  • Reference images

  • Sample design files

  • Preview images

The available upload options depend on the page and the type of request you are creating.

When you may need to upload files

You may need to upload files when:

  • Requesting a print for your own model

  • Requesting a custom design

  • Providing supporting references for a job

  • Adding visual context for Makers or Designers

Tips for better uploads

To make your uploads more useful:

  • Use clear, descriptive file names

  • Upload the best-quality references you have

  • Include multiple images if they help explain the request

  • Make sure your files match the work you are requesting

  • Double-check that you selected the correct files before submitting

Before you upload

Before starting, make sure:

  • Your files are complete and ready

  • You know which request or form you are uploading them to

  • Your internet connection is stable

  • Your files are not damaged or incomplete

If an upload takes time

Some uploads may take longer depending on:

  • File size

  • Number of files

  • Network speed

  • File type

Wait for the upload to finish before leaving the page if the form is still processing.

If your upload does not work

If a file upload fails:

  • Try again after refreshing the page

  • Check whether the file is too large or incomplete

  • Make sure your internet connection is stable

  • Try uploading fewer files at once

  • Confirm that you are using the correct upload field

After uploading

Once files are uploaded successfully, review the request or form before submitting. Make sure the correct files are attached and that your description matches them.