A logo that looks sharp on a presentation slide can become blurry, jagged, or the wrong shade on 500 polo shirts. Knowing what artwork files are needed before production begins protects your brand, avoids approval delays, and gives your printer the information needed to produce a consistent result across every garment or promotional item.

For custom uniforms, event shirts, teamwear, caps, tote bags, and corporate gifts, the best file depends on the decoration method, the size of the design, and the material being decorated. A simple one-color chest logo does not need the same preparation as a full-color sublimation jersey. The goal is not simply to send a file that opens. It is to provide artwork that can be reproduced accurately at production scale.

What Artwork Files Are Needed for Printing?

Vector artwork is the preferred starting point for most custom apparel projects. Vector files are built from mathematical paths rather than a fixed grid of pixels, so they can be enlarged for a back print, banner, or oversized tote bag without losing edge quality. This matters when the same logo appears in several locations and sizes.

The most production-friendly vector formats are AI, EPS, PDF, and SVG. An Adobe Illustrator file is often ideal when available, while a properly saved PDF can be equally useful. For a final print-ready file, text should be converted to outlines or curves. That prevents a font substitution from changing your logo, event date, or campaign message when the file is opened on a different system.

High-resolution raster files can also work well, especially for photographs, detailed illustrations, and direct-to-garment printing. PNG, TIFF, and PSD files are generally stronger choices than a basic JPG because they can retain better image quality. A PNG with a transparent background is especially practical when the design needs to sit cleanly on a colored garment.

A JPG can be usable, but only if it is large, crisp, and supplied at the correct size. A tiny web image stretched to fit the front of a T-shirt will not gain detail during printing. It will only reveal its pixels.

File types that usually need more work

Screenshots, files copied from social media, images pulled from a website, Microsoft Word documents, and low-resolution JPGs are not ideal production artwork. They may be fine as a visual reference, but they rarely contain enough detail for a clean print or embroidery result.

If those are the only files available, a production partner may be able to redraw or recreate the artwork. That service can be worthwhile, particularly for a logo that will be used repeatedly across uniforms and merchandise. However, it should be handled before final approval, as redrawing can affect lead time and may require confirmation from the brand owner.

Resolution: The Detail Behind a Clean Print

For raster artwork, resolution and final print size must be considered together. The standard benchmark is 300 DPI at the intended print dimensions. If a design will print at 10 inches wide, it should be prepared at 10 inches wide and 300 DPI, not supplied as a small image that is later enlarged.

This requirement varies slightly by method. Direct-to-garment and heat transfer can reproduce detailed, full-color images when the source file is strong. Screen printing benefits from clean, separated artwork, especially when there are solid colors, fine lines, or halftone effects. Sublimation can carry vivid all-over graphics, but the design must be built to the garment pattern and include the required bleed areas.

Fine details deserve special attention. Very thin lines, small reversed-out text, subtle gradients, and tiny gaps between shapes can disappear or fill in during production. A design may look excellent at 200% zoom on a monitor but fail when viewed at normal distance on fabric. Supplying the original file allows the production team to flag these risks before the order moves forward.

Provide the Right Color Information

Color is one of the most common causes of disagreement between a digital proof and a finished garment. Screens display colors in RGB, while many print processes use CMYK, spot inks, or specific thread shades. Fabric texture and garment color also influence the final appearance.

For brand-critical logos, provide Pantone color references whenever possible. A Pantone code gives the printer a clear target for screen-print ink matching and helps maintain consistency across future orders. If your organization has a brand guide, send the relevant logo and color pages with the artwork rather than relying on a visual sample alone.

For full-color digital artwork, use the color mode requested for the process. CMYK is commonly appropriate for print-ready designs, while RGB files may be accepted for some digital workflows. The practical answer depends on the equipment and method, so it is better to preserve the original artwork and let the production team confirm the optimal output settings than to make random conversions yourself.

Also specify whether a color is intended to print as metallic, fluorescent, white, or a standard solid ink. These effects are not interchangeable, and a white underbase may be necessary for bright artwork on dark garments.

Artwork Requirements by Decoration Method

The file requirement is closely tied to how your design will be applied. Screen printing is often the right choice for bulk orders with bold logos, consistent colors, and repeatable designs. Vector artwork with clearly defined spot colors gives the cleanest setup and helps control production accurately.

Embroidery begins with artwork, but it requires an additional process called digitizing. The logo is converted into a stitch file that tells the embroidery machine where, how, and in what sequence to sew. Send the best vector logo you have, along with the intended size and placement. Avoid assuming every detail can be stitched exactly as printed. Small text and ultra-fine lines may need to be simplified to remain legible on a cap, polo shirt, or workwear pocket.

For heat transfer, high-resolution PNGs and vector files are both useful. This method suits names, numbers, smaller variable runs, and detailed designs that would be inefficient to screen print. Transparent backgrounds are helpful, but do not remove intentional white elements from the artwork just because the background appears white on screen.

Direct-to-garment printing works well for photographic or highly detailed full-color designs, typically on cotton-rich apparel. High-resolution PNG or TIFF files are a strong choice. Clean edges, accurate transparency, and sufficient resolution matter more than a complicated file format.

Sublimation is designed for polyester garments and full-coverage graphics, such as sports jerseys. Artwork should be supplied as an all-over design or according to the garment template, not simply as a front-facing image. Sleeves, side panels, collar areas, seams, player names, and numbers all need to be planned before the proofing stage.

Include Placement and Production Instructions

Even excellent artwork can be placed incorrectly if the order brief is vague. State where each design belongs: left chest, full front, center back, sleeve, cap front, or tote bag panel. Include the desired print dimensions when brand standards require a specific size.

For orders with multiple items, identify which artwork applies to each product and garment color. A white logo intended for a black polo should not automatically be used on a white event shirt. Likewise, a dark print may need an outline or alternate logo version on darker fabric.

Variable data needs a structured approach. If shirts include employee names, departments, player numbers, or individual titles, provide the information in a clearly organized spreadsheet and verify spelling before approval. The artwork file shows the design; the variable-data list controls what goes on each individual item.

Send a Complete Artwork Package

The fastest approvals happen when artwork arrives with the supporting details needed to make decisions. Alongside the source file, provide the logo version, Pantone references if applicable, desired decoration method if known, item color, placement, size, and quantity. A reference image is useful when it shows the intended look, but it should support the original production file rather than replace it.

Confirm that your organization has permission to use every logo, photo, mascot, slogan, and licensed graphic included in the order. This is particularly relevant for schools, sports teams, franchise brands, and event sponsors. Production cannot correct an ownership issue after garments have been made.

At Green Cotton, artwork review is part of turning an idea into a controlled production specification. A clear file package gives the team room to recommend the right printing or embroidery approach, produce an accurate proof, and keep your order moving on schedule.

Before you approve that proof, look beyond the logo itself. Check spelling, color references, garment selection, print locations, sizing, and every personalized detail. Those few focused minutes are where a good design becomes branded apparel your team will be confident to wear.