What to Prepare Before Sending a Design File to a Print Shop

So, you've got a great design idea and you're ready to bring it to life on custom apparel. Before you hit "send" and submit your artwork to a print shop, there are a few important things to get in order. Rushing this step can lead to blurry prints, incorrect colors, or costly reprints. Whether you're ordering custom t-shirts, hoodies, or branded workwear, a little preparation goes a long way.

At The Extreme Print Lab, Phoenix's go-to destination for custom printing services in Phoenix, we've seen it all. Here's a complete guide to help you get print-ready before your first conversation with us.

1. Use the Right File Format

File format is the foundation of any good print job. If your artwork isn't in the correct format, even the most talented print team won't be able to save it from looking pixelated or distorted.

Preferred file types for print:

• Vector files (.AI, .EPS, .SVG) — These are the gold standard. Vector files scale infinitely without losing quality, making them ideal for screen printing and embroidery.
• High-resolution raster files (.PNG, .TIFF) — If you're working with a raster image, make sure it's at least 300 DPI at the intended print size. A 72 DPI web image will not work.
• PDF (print-ready) — Acceptable when saved with embedded fonts and high resolution.

Avoid sending JPEG files with heavy compression, low-resolution screenshots, or Word document logos. These formats often look fine on screen but fall apart when enlarged for printing.

2. Set the Correct Resolution and Size

Resolution matters more than most people realize. For DTF printing and screen printing, your artwork should be set to 300 DPI (dots per inch) at the actual size it will be printed. This is especially important if your design includes fine lines, small text, or photographic elements.

Think about placement too. Where will the design appear on the garment? Common print areas include the front chest, full front, back, sleeves, and left chest. Providing the intended print dimensions (e.g., 12" x 14" for a full front) helps the production team size your file accurately without guessing.

3. Understand Color Modes: CMYK vs. RGB

Here's a common mistake that trips up first-time customers: submitting a design in RGB color mode instead of CMYK. Digital screens display color using RGB, but most professional printing processes use CMYK inks. When an RGB file is converted during production, colors can shift unexpectedly that vivid electric blue might print as a muted navy.

Before sending your file, convert it to CMYK in your design software (such as Adobe Illustrator or Photoshop). If you're matching a brand color, provide the Pantone (PMS) color code so our team can nail the exact shade. This is especially critical for logo printing and corporate merchandise.

4. Outline Your Fonts

If your design includes text, always convert your fonts to outlines (or "curves") before saving and sharing the file. If you don't, and the print shop doesn't have the same font installed on their computer, the text will automatically substitute with a default font completely changing the look of your design.

In Adobe Illustrator, go to Type > Select All > Create Outlines. In CorelDRAW or other vector tools, a similar option is available under the text settings. This simple step eliminates a very common production headache.

5. Prepare a Transparent Background (When needed)

For many print methods especially DTF printing and direct-to-garment artwork with a transparent background ensures a clean, professional result. If your logo or design has a white background baked in, it may print with an unwanted white box around it on dark or colored garments.

When saving your PNG, make sure the background layer is removed so the checkered transparency pattern shows through. If you're unsure how to do this, just send us the original source file and our team at The Extreme Print Lab will handle it for you.

6. Know Which Print Method You're Using

Different printing techniques have different artwork requirements. What works great for screen printing may need adjustments for embroidery or DTF. Understanding the basics of each method will help you prepare your file correctly from the start.

• Screen Printing: Works best with solid colors and limited color counts. Halftones and gradients require special handling.
• DTF Printing: Handles full-color and photographic designs with ease. Great for small runs and complex artwork.
• Embroidery: Requires a simplified, digitized version of your design. Fine details and gradients don't translate well.

Not sure which method suits your project? Check out our custom apparel printing guide for a full breakdown of DTF vs. screen printing vs. embroidery or reach out to our team for a free consultation.

7. Double-Check All Details Before Submitting

Before sending your file, run through this quick pre-submission checklist:

• File is in the correct format (AI, EPS, SVG, or 300 DPI PNG/TIFF)
• Design is sized to the actual print dimensions
• Color mode is CMYK (or Pantone codes are included)
• All fonts have been converted to outlines
• Background is transparent (if needed)
• You've noted which garment, color, and placement you want
• You know which print method you're requesting

When every one of these boxes is checked, you'll save time, avoid delays, and get a final product that looks exactly the way you imagined. Ready to get started? Learn more about who we are and why clients trust us or contact The Extreme Print Lab today to place your order.