How to Prepare Artwork for Custom Apparel Printing

A great shirt starts long before the garment reaches the press. It starts with artwork that is clear, correctly sized, and suited to the decoration method. When those pieces are in place, production is smoother, the finished print looks sharper, and there are fewer surprises between the first idea and the final box of apparel.

We regularly receive everything from polished vector files to phone screenshots, social media graphics, and old logos copied from websites. Most ideas can be turned into something printable, but the amount of preparation varies. If you are ordering custom clothing and apparel, these practical steps will help you prepare artwork that gives your project the best possible start.

Begin with the garment and printing method

Artwork does not exist in isolation. A design that works beautifully as embroidery may need to be simplified for a small left-chest placement. A detailed full-colour illustration may be ideal for digital printing, while a bold one-colour mark can be efficient for screen printing or heat transfer vinyl.

Before finalizing the file, decide what you are printing, how many pieces you need, and where the artwork will appear. A full-back design on a hoodie has different space and detail considerations than a small logo on a polo. Fabric colour matters too. Dark garments may require an underbase or a different treatment than white garments, and thin dark details can disappear when printed on black.

You do not need to choose the production method alone. Tell us the garment, quantity, budget, intended use, and look you want. We can recommend a suitable approach and explain what the artwork needs for that process.

Use vector artwork whenever possible

Vector artwork is built from paths and shapes rather than a fixed grid of pixels. It can be enlarged for a jacket back or reduced for a sleeve without becoming blurry. Common vector formats include AI, EPS, and properly prepared PDF files.

A file extension does not automatically make artwork vector. Placing a low-resolution JPEG inside a PDF still leaves you with a low-resolution image. The easiest test is to zoom in closely. If the edges remain smooth, the artwork may be vector. If you see square pixels or fuzzy edges, it is a raster image.

Logos should ideally be kept as vector master files. They are useful for apparel, signs, vehicle graphics, print materials, and future projects you may not have planned yet. If your only copy is a small image, our graphic design and branding service can rebuild or clean it up before production.

When using raster images, start large

Photographs and detailed digital illustrations are usually raster images. JPEG, PNG, TIFF, and Photoshop files fall into this category. For apparel printing, the image should be supplied at the intended print size with enough resolution to reproduce cleanly. A useful target is 300 pixels per inch at final size.

That final-size detail matters. An image that is 300 pixels per inch at two inches wide will not stay sharp when stretched across an eleven-inch chest. Enlarging a small file does not create genuine detail. It only creates more pixels based on information that was not there in the first place.

Send the original file whenever possible. Images saved from Facebook, screenshots, and graphics copied from websites are often compressed or reduced. The original camera file, design export, or source document usually gives us much more to work with.

Convert fonts or include them properly

Typography can change unexpectedly when a file uses a font that is not available on another computer. Letters may shift, lines can wrap differently, and spacing can change. For final vector artwork, convert the text to outlines so each letter becomes a fixed shape.

Choose colours deliberately

Screen colours and printed colours are not always identical. Monitors display light using RGB, while many production processes interpret colours differently. Bright colours on a phone can shift when reproduced on fabric, especially when the garment itself is part of the visual result.

If colour accuracy is important, provide Pantone references or established brand colour specifications. Also tell us whether a close visual match is acceptable or whether the colour is tightly controlled. For a staff uniform or a second run that must match an earlier order, bring a physical sample when possible.

Design for the actual imprint area

Garment sizes change, seams move, and pockets or zippers can reduce the usable printing area. A design should be planned for the specific product and placement, not simply centred on a blank page.

For a left-chest logo, fine details and long taglines may become too small to read. For a full-front design, balance the width with the garment rather than making it as large as technically possible. Sleeve artwork needs a compact shape that remains clear on a narrow area. Hoodies add pockets, drawstrings, and thicker seams that affect placement.

Remove backgrounds you do not want printed

A white rectangle around a logo may be invisible on a white screen but obvious on a coloured shirt. If the background should not print, supply artwork with genuine transparency or a vector file containing only the intended shapes.

PNG files can support transparency, but that does not guarantee the background was removed correctly. Zoom in around the edges and look for white halos, rough cutouts, or stray pixels. Hair, smoke, shadows, and soft glows need particular care. Tell us what should print and what should remain transparent so there is no guesswork.

Keep important details thick enough to reproduce

Very thin lines, tiny gaps, and miniature type may look crisp on screen but break down on fabric. The texture of a shirt is different from smooth paper, and embroidery adds its own physical limits. Simplification often improves both production and readability.

Look at the design at its actual print size, not only while zoomed in. If a line disappears or two shapes merge, adjust them before approval. Small trademark symbols and detailed contact information may belong on a hangtag, card, or website rather than in the main apparel design.

Send a clean package with clear instructions

Review the proof carefully. Check spelling, phone numbers, website addresses, colours, proportions, and placement. A proof is the moment to catch an error, not a formality to click through. Ask questions if something does not match what you pictured.

Let the artwork support the reason for the shirt

A staff shirt needs quick recognition. Event apparel should be readable in a busy room. A promotional giveaway should feel wearable after the event. A fundraising design needs a clear emotional idea. Preparing the file correctly matters, but the design still needs to do a job.

We help with both sides of the process. GallantMEDIA can prepare or refine the artwork, recommend the garment and decoration method, provide a proof, and produce anything from one custom shirt to a larger run. Browse our custom apparel products, or contact us with the artwork you have. We will help turn it into clothing people are comfortable wearing and proud to represent.