Preparing your base files

Last updated: May 4, 2026

Before uploading a base file, make sure it is properly set up for use in your template.

A well-prepared base file will save time and prevent issues when creating your print file.


What your base file should include

Your base file should contain everything that is fixed and not personalizable, such as:

  • Final dimensions (including bleed and margins)

  • Static design elements (decorations, frames, backgrounds)

  • Production details (crop marks, cut lines, annotations, etc.)

These elements will always be part of the print file.

Do not include any elements that will be personalized.

This includes:

  • Text that shoppers will edit

  • Images or photos that shoppers will upload

These elements should be added inside Customily.


General guidelines

  • Make sure your file is exported at the correct size

  • Use a format that matches your final export (vector or image)

  • Keep your design clean and organized


Preparing an EPS base file in Adobe Illustrator

If you're using Illustrator, you can prepare your base file as follows:

  1. Open your design file

  2. Remove all personalizable elements (text, images, etc.)

  3. Go to File → Save As

  4. Select Illustrator EPS (.eps) as the format

  5. Enable Use Artboards to preserve the correct size

Important

Make sure your base file only includes fixed elements. As all personalization will be added inside Customily.