.ai

The file extension for Adobe Illustrator, a vector-based image format commonly used in screen printing. In apparel decoration, a .ai file is considered one of the most print-ready and professional artwork formats available. It stores designs as vectors rather than pixels, allowing artwork to be scaled to any size without losing quality.
For garment printers, .ai files are preferred because they provide clean lines, precise colour control, and full editability—critical for accurate and consistent printing.

Why .ai Files Are Important for Apparel Printing

Unlike raster image formats such as JPEG or PNG, .ai files are built using mathematical paths. This makes them ideal for logo printing, text, line art, and detailed graphics that need to remain sharp at various sizes.

In practical terms, a single .ai file can be used for:

A small left-chest logo
A large back print
Sleeve branding
Multiple garment types

All without any loss of clarity or resolution.

Key Features of .ai Files

Vector-Based Artwork

The most important feature of a .ai file is that it is vector-based. This allows printers to resize artwork freely while maintaining crisp edges and consistent detail.

Editable Layers

.ai files support layers, making it easy to isolate elements, adjust colours, modify text, or prepare artwork for different print locations.

Accurate Colour Control

.ai files can be set up using CMYK, RGB, or Pantone spot colours, which is especially important for brand consistency across uniforms and promotional apparel in Australia.

Benefits of Supplying .ai Files

Providing artwork in .ai format offers clear advantages:

Sharp, professional print results
Faster artwork setup and approvals
Reduced need for artwork redraws
Lower risk of printing errors
Better colour accuracy

For businesses ordering bulk garments or repeat jobs, .ai files help ensure consistency across multiple orders and garment styles.

.ai Files and Printing Methods

.ai files are suitable for nearly all decoration methods, including:

Screen printing, where clean vectors and spot colours are essential
DTF and DTG printing, where high-quality artwork improves output
Embroidery digitising, where vectors assist with clean stitch paths
Vinyl and heat transfer, which require cut-ready vector artwork
Sublimation, where scalable designs are needed for different garment sizes

Because of this versatility, .ai is often the preferred format requested by professional printers.

Common Industry Practices in Australia

In the Australian custom apparel industry, printers often ask customers to supply logos in .ai format whenever possible. When unavailable, artwork may need to be recreated or converted, which can add time and cost to a job.

.ai files are also commonly used to create digital proofs, allowing customers to approve sizing and placement before production begins.

Practical Tips for Supplying .ai Artwork

To ensure your .ai file is print-ready:

Convert text to outlines to avoid font issues
Embed or link images at high resolution if used
Remove unused layers and hidden elements
Set artwork to actual print size
Clearly label artboards for each print location

These steps help streamline the production process and minimise revisions.

Why .ai Is the Preferred Artwork Format

.ai files provide the highest level of control, flexibility, and reliability in garment printing. They allow printers to produce accurate, durable, and professional results across all decoration methods. For Australian businesses, clubs, and organisations investing in custom apparel, supplying artwork in .ai format is one of the simplest ways to ensure consistent, high-quality outcomes.

.ai