1The big picture

Seven stages take you from a blank idea to a printed product in your hands. Every section below expands one of these stages.

The end-to-end pipeline. Blue stages happen on your computer; orange stages happen inside Printful.

What you'll need

• A computer (Mac or Windows) and a web browser.
• Access to one AI image tool — several have free tiers (next section).
• A free Printful account — sign up at printful.com.
• A payment method and the delivery address for your order.

2Choosing an AI image tool

Five popular tools, compared neutrally. There is no single "best" — each has real strengths and real limits for print artwork.

How to choose, quickly

3Writing print-ready prompts

A good prompt is the difference between a muddy photo and a crisp, printable graphic. These habits work across every tool.

The anatomy of a strong prompt

Build prompts from six parts. The last two — background and format — are what make art printable.

Seven rules for printable results

1. Ask for a plain, solid background. "Plain white background" gives clean edges that are far easier to cut out later.
2. Say "vector," "flat," or "sticker style" for crisp shapes. Avoid soft gradients and busy photo backdrops unless that's the look you want printed.
3. Limit the palette. Two to four strong colors print cleaner and look more intentional than a 30-color gradient.
4. Center the subject and ask for "full subject in frame" so nothing important is cropped.
5. Avoid relying on AI text. Image tools often misspell words. For wording, use Printful's Text Tool (section 7) instead.
6. Request high detail / high resolution. Bigger source images survive printing far better (see DPI, section 4).
7. Iterate. Generate several, then refine: "same fox, simpler, fewer colors, thicker outline."

4Exporting & file extensions

When you save an AI image, its file extension (the bit after the dot, like .png) tells software how the picture is stored. Two of them matter for printing.

Why PNG wins for a T-shirt

A JPEG's solid background prints as a stiff rectangle on the shirt (the "sticker effect"). A transparent PNG avoids it.

Resolution & color — the print-quality rules

• Resolution (DPI): Printful wants at least 150 DPI for most products, and 300 DPI for paper goods, phone cases and stickers. For a 12 × 16 inch shirt print that means a file roughly 1,800–4,800 pixels wide. Bigger source images = sharper prints.
• Color profile: Save in sRGB (specifically sRGB IEC61966-2.1). Printers convert to CMYK, so very neon screen colors may shift slightly.
• File size limits: up to 100 MB for PNG/JPEG and 20 MB for SVG.
• Avoid PDF for artwork uploads — hidden layers cause unpredictable prints.

5Picking the background color

Inside the AI tool, the background color you request affects two things: how easy the image is to cut out, and how the design reads on the garment you've chosen.

Match the request to the garment

Choose the AI background to match your garment so you can judge contrast — then remove it before printing either way.

A common trap with white & black designs

If your design itself contains white areas and you'll print on a white shirt, those white parts vanish into the fabric. The same happens with black art on black shirts. Preview on the actual garment color in Printful (section 10) before ordering. Adding a thin contrasting outline around the design solves most of these cases.

6Removing the background

The goal: turn your image into a transparent PNG so only the artwork prints. Both Mac and Windows can now do this for free, built in — no extra software.

The cut-out workflow. The checkerboard pattern is how editors show "transparent."

On a Mac — three built-in ways

On Windows — built-in options

Online tools (work on any computer)

7Simple text vs. artistic graphic

Not every design needs AI art. If your idea is words — a slogan, a name, a date — Printful's built-in Text Tool is cleaner, sharper and free.

What Printful's Text Tool gives you

Inside the Design Maker you'll find a Text option alongside Upload file, Clipart, Quick Design, Fill and the Pattern Tool. With the Text Tool you can:

• Type one or more lines of text directly onto the product.
• Choose from a library of fonts, set size, and pick any color.
• Curve, align, rotate and layer the text, and combine it with uploaded art or clipart.
• Because the text is created as a clean vector inside Printful, it stays razor-sharp at any size — no DPI worries.

You can mix both

A very common T-shirt layout is an uploaded graphic in the center with Text-Tool wording arched above or below it. The Design Maker lets you stack and position both on the same print area.

8Print methods explained

Printful applies your design using different techniques depending on the product. You usually don't pick the method by name — the product determines it — but knowing them helps you design well.

How to picture the differences

DTG soaks in, DTFlex sits on a film layer, embroidery is raised thread, AOP covers the whole surface.

9Print placements & areas

A "placement" is where on the product the design goes. Each placement is a separate print area with its own size limit — and you can use more than one.

Common T-shirt placements. Each dashed area is a separate print area you can fill independently.

Typical T-shirt placements

• Front — the main large area (center chest or full front).
• Back — another large area, often the biggest.
• Left / right sleeve — small accents.
• Left chest — small logo-sized spot, popular for understated designs.
• Inside & outside neck label — for a branded tag look (outside label specs are small, around 3 × 3 inches — keep it simple).

Each placement you add may add to the product's price (more print = more cost). For a first order, a single front print is the simplest and cheapest starting point.

10Importing & generating the product

Now the design becomes a real product. Everything here happens in Printful's free, browser-based Design Maker.

The Design Maker at a glance

A schematic of the Design Maker: tools on the left, the product canvas in the middle, placement & checks on the right.

Step-by-step

1. Pick the product. In your Printful dashboard open the Product Catalog, choose your T-shirt (brand, color, sizes), and click Start designing.
2. Open the print area. Select the placement you want first (e.g. Front) from the top bar or right panel.
3. Upload your design. Click Upload file and select your cleaned-up transparent PNG. (Or use Text / Clipart instead — section 7.)
4. Position it. Drag to move; use the corner handles to resize; rotate or layer as needed. Tip: shrinking an image increases its effective DPI, which can rescue a slightly small file.
5. Watch the quality warning. If a print-quality alert appears, your image is too low-resolution for that size — make it smaller or use a higher-res file.
6. Fill / background (optional). Use the Fill tab to add a background color or full-surface print, or the Pattern Tool for repeats.
7. Add more placements (optional). Repeat for back, sleeve or label. Each adds to the price.
8. Preview. Use the 3D / mockup view to see the design on the actual garment color. This is your last visual check before ordering.
9. Save the product. Click Proceed / Save. Your custom product is now ready to order.

11Placing an order & shipping it

You can order your designed product for yourself without running a store — Printful supports manual orders sent to any address.

The manual-order flow inside the Printful dashboard.

Step-by-step

1. Start a new order. In the dashboard go to Orders → New order (a manual/sample order).
2. Add your product. Select the custom T-shirt you saved, and choose the size and quantity.
3. Enter the recipient. Type the delivery name and address — your own home address for a personal order. Double-check it; misdelivery from a typo isn't covered.
4. Choose a shipping method. Standard or Express (see section 12). The cost and estimated delivery date appear here.
5. Review the breakdown. You'll see product cost + shipping (+ any tax/surcharge). There's no minimum order and no need for a store.
6. Pay and confirm. Enter payment, place the order. Printful then begins fulfillment.

12Shipping & delivery times

Total time has two parts. Printful states it plainly: fulfillment time + shipping time = delivery time.

Don't judge by shipping speed alone — production happens first.

Fulfillment (making it)

On average 2–5 business days for all print methods. Printful reports that over 97% of orders ship within 5 business days and more than half within 3. These are estimates, not guarantees.

Shipping (getting it to you)

As an overall guide, Printful describes domestic delivery as roughly 1–8 business days and international as 1–20 business days, depending on method and location. A typical US personal T-shirt order therefore often lands in about one to two weeks door to door (a few days to make it, a few days to ship it).

If something goes wrong

Printful offers free reprints or refunds for orders that arrive misprinted, damaged, defective, or are lost in transit — but not for errors you made (like a wrong address or a low-resolution file you approved past the warning). All carriers provide tracking.

13Other products, checklist & glossary

Other product types — what changes

The whole workflow is the same; only a few details shift per product. The T-shirt instructions transfer directly, with these notes:

Pre-flight checklist

Glossary