How to Prepare Artwork Files for Custom T-Shirt Printing

One of the most common frustrations in custom t-shirt printing is a great-looking design that prints poorly because the file wasn't prepared correctly. A logo that looks sharp on a business card or website can come out blurry, pixelated, or muddy on a shirt if it's in the wrong format or too low-resolution. The good news: once you understand a few key concepts, getting your artwork print-ready is straightforward — and it saves everyone time and money.

Why File Quality Determines Print Quality

Print shops cannot improve a low-quality file. If you send us a small, blurry logo from a Facebook page screenshot, that's exactly what we'll have to work with. Printers and embroidery machines reproduce the artwork they're given at full scale — so any flaw in the file becomes a flaw in the final product, often more visible than it looks on a small screen. "Garbage in, garbage out" is the most honest thing we can tell you about artwork preparation.

That said, the solution is usually simple: use the right file format, export at the right resolution, and double-check your setup before sending. This guide walks you through each step.

Vector vs. Raster: The Most Important Distinction

All digital artwork falls into one of two categories: vector or raster. Understanding the difference is the single most important thing you can do before submitting an order.

Vector Files (AI, EPS, SVG)

Vector files are built from mathematical paths — lines, curves, and shapes defined by coordinates rather than pixels. This means they can be scaled to any size without losing quality. Take a vector logo and blow it up to billboard size: it remains perfectly crisp. Shrink it to a half-inch emblem on a hat: still sharp. Vector is the gold standard for logos, text, and graphics with solid or flat-color areas.

Common vector formats: .ai (Adobe Illustrator), .eps (Encapsulated PostScript), .svg (Scalable Vector Graphics). If you or your designer created your logo in Adobe Illustrator, you likely have these files. Request them before you place your order.

Raster Files (PNG, JPG, PDF)

Raster files are made of pixels — a grid of tiny colored squares. They work great at their native size but degrade when enlarged. A 300-pixel-wide logo that looks fine on your phone will look blurry and pixelated when stretched to fit a chest print. The critical factor for raster files is DPI: dots per inch.

For print, you need 300 DPI at the intended print size. A chest graphic is typically 10–12 inches wide. At 300 DPI, that requires a file that's roughly 3,000–3,600 pixels wide. Most images you download from the internet or copy from a website are 72 DPI — built for screen display, not print. A 72 DPI file enlarged to print size will look visibly blurry.

Best File Formats by Print Method

Different printing methods have different artwork requirements. Here's what works best for each:

• DTF Printing: High-resolution PNG with a transparent background (preferred) or a vector file. The transparent background ensures your design won't have a visible white box around it on colored shirts.
• Screen Printing: Vector files are strongly preferred. Artwork should use flat, solid colors with no gradients or photographic elements. Each color must be clearly separated. AI or EPS with outlined fonts is ideal.
• Sublimation: High-resolution PNG (300 DPI+) or vector. Because sublimation supports unlimited colors and photo imagery, both formats work well — but files must be sized to match the print dimensions.
• Embroidery: Vector or very high-resolution raster. Embroidery shops convert your artwork into a "digitized" stitch file, and the better your source artwork, the better the digitization. Very small text (under 0.25 inches tall) rarely embroiders cleanly regardless of file quality.

How to Export Correctly from Canva

Many of our customers create their designs in Canva, which works perfectly well — as long as you export correctly. Follow these steps for the best result:

• Click Share → Download in the top-right corner
• Choose PNG as the file type (not JPG — PNG supports transparency)
• Check the box for "Transparent background" if your design has a clear background
• For best quality, select the highest resolution option available — Canva Pro users can export at 300 DPI
• Alternatively, download as PDF (Print), which exports at high resolution and is often acceptable for print

Avoid exporting as JPG if possible — JPG doesn't support transparency and uses lossy compression that softens edges, which shows up in print.

What to Do If You Only Have a Low-Resolution Logo

Don't panic — this is a common situation, especially for small businesses whose logo was designed years ago or pulled from a website. You have a few options:

• Contact your original designer: Most professional designers keep the source files (AI, EPS) and can send them on request. This is the fastest and cleanest solution.
• Pay for re-vectorization: A graphic designer can manually trace your logo and recreate it as a vector file. This typically costs $20–$75 depending on complexity and is a worthwhile investment if you plan to use the logo frequently.
• Send us what you have: Submit your file with your quote request and let us take a look. We'll assess whether it's printable as-is, and if not, we'll let you know your options before any production begins.

Artwork Submission Checklist

Before you send your file, run through this quick checklist:

• File is vector (AI/EPS/SVG) OR raster at 300 DPI or higher at the intended print size
• PNG files have a transparent background (no white box)
• All fonts are outlined or embedded (prevents font substitution issues)
• Colors are specified (Pantone, CMYK, or hex codes if you need exact color matching)
• File is sized close to the intended print dimensions
• You've noted where on the garment the design should be placed (chest, back, sleeve, etc.)

At Triad Custom T-Shirts, we review every artwork file before production and send you a free digital mockup showing exactly how your design will look on the garment. If there's a file quality issue, we'll catch it and contact you before anything is printed. Submit your quote request with your artwork and we'll take it from there.