On a t-shirt, the front and the back are the two large print areas, while sleeve and pocket (left chest) prints are small placements whose exact size depends on your provider and the garment. The one published front standard we can cite is Printful's 15 x 18 inches on select DTG tees, which replaced its older 12 x 16 inch area, and depending on the provider, smaller garment sizes get a scaled-down print while larger ones stop growing at a set size.
This matters the moment you size a file or build mockups. A design made for the wrong area prints smaller than the mockup suggested, gets shrunk on a child's shirt, or looks lost on a 3XL. Knowing what each placement can hold lets you design once and set honest expectations in the listing.
What a print area is, and what it is not
A print area is the largest space the printer can cover on that product. One large provider describes it as showing "the maximum printable space available on the product" and sends sellers to each product's file requirements. It is a ceiling, not a target: many designs look better well inside it, text-led ones especially.
Each placement (front, back, sleeve, pocket) is its own area with its own template, and each needs its own file at the size it will print. One provider puts it plainly: "Make sure the file is sized to match the actual print dimensions to ensure DPI is calculated correctly." Our guide to what DPI means for print files has the arithmetic, and our print file requirements cover format and transparency.
The front print area
The front is where the published numbers are. Printful's standard front print area for select DTG products is 15 x 18 inches, and it replaced the legacy 12 x 16 inch area. Printful has offered the larger area since May 17, 2025.
The bigger area does not apply to every shirt or every size. It covers the Bella+Canvas 3001 in sizes L to 5XL, the Bella+Canvas 3413 in L to 4XL and the Cotton Heritage MC1082 in M to 3XL, and Printful notes that some smaller product sizes do not support this placement. Other providers publish their own templates, so check the one for the exact product you list.
In practice, most chest designs do not need the full width. Where the design sits matters as much as how big it is, and our article on where to place a design on a shirt covers the distance from the collar.
The back print area
Providers treat the back as a separate placement with its own template and file. Do not assume it matches the front: check its size in the template before you design, because a back design made at front proportions may need reworking. Back prints usually take one of two forms, a small design just below the collar or a large one across the shoulder blades, and each reads differently in a mockup. Check how your provider prices a second placement before you add one to a listing, too.
Sleeve and pocket (left chest) prints
Sleeve and pocket prints are small by nature, and their sizes vary more between providers and garments than the front does, so the template is the only reliable source. Design for what survives at that scale: a short word, a date, a small icon or a simple mark. Fine detail and thin strokes are the first things to break up when a design shrinks, and our guide to thin lines and small text shows what holds up.
On a tee without a pocket, a "pocket print" simply means a small design on the left chest. It pairs well with a large back print: the front carries a small mark and the back carries the main artwork. Name each placement clearly in the listing so the buyer knows which side carries what.
How smaller and larger sizes change the print
The garment size changes the print in two ways. On DTG products that use the 15 x 18 area, Printful downscales designs to 11.5 x 13.8 inches on smaller garment sizes. Another provider says designs "are not scaled up for sizes larger than L", so the print keeps the same physical size from L upward and covers less of a 3XL than of an L.
Youth and toddler shirts are separate products with their own templates, usually smaller than the adult ones. An adult front design has to be scaled down to fit them, which is usually what buyers of family sets expect, but small text can become unreadable. Check each product's template, and read our notes on toddler and youth shirts before you list one design across all ages.
Here are the sourced sizes in one place, with the pixels each needs at 300 DPI, the resolution one large provider recommends for PNG files:
| Placement | Inches | Centimetres | Pixels at 300 DPI | Source |
|---|---|---|---|---|
| Printful standard front, select DTG tees | 15 x 18 | 38.1 x 45.7 | 4,500 x 5,400 | Printful help centre |
| Printful legacy front | 12 x 16 | 30.5 x 40.6 | 3,600 x 4,800 | Printful help centre |
| Printful front on smaller sizes | 11.5 x 13.8 | 29.2 x 35.1 | 3,450 x 4,140 | Printful help centre |
| Alomations print-ready file, long side | 12 | 30.5 | 3,600 | Alomations |
| Back, sleeve, pocket | Varies | Varies | Template size x 300 | Your provider's template |
How Alomations sizes files and shows each placement
Every design in Alomations comes back print-ready at 12 inches and 300 DPI, which is 3,600 pixels on the long side, as a transparent PNG with an SVG alongside. You also get light and dark versions from one design, and tone rules per garment colour decide which version each shirt colour gets, automatically and with an override.
Smart mockups then show the placement before anything is published. The design is rendered onto product photos with real fabric folds, shading and light, a front mockup can carry its own chest-logo spot for pocket-style designs, and you can preview every colour and every side before the run. Our catalog includes women's, youth, toddler and baby sizes, apparel is printed with DTF, and production for US orders is in the US.
Frequently asked questions
What size should my t-shirt design file be?
Size it to the actual print dimensions at 300 DPI. A design that prints 12 inches wide needs 3,600 pixels across, and a full 15 x 18 inch front needs 4,500 x 5,400 pixels.
Is the back print area the same size as the front?
Not necessarily. Providers list the back as its own placement, so check its template rather than reusing the front's numbers.
Will my design look smaller on a 3XL?
On a provider that does not scale designs up above size L, the print stays the same physical size, so it covers less of a bigger shirt. That is normal, and a mockup on a larger size helps set expectations.
Can I use one file for adult, youth and toddler shirts?
You can reuse the same artwork, but size and check it against each product's template. Make sure small text and thin lines still read at the smallest size before you list them together.
Design once at full size and see every placement on a mockup with the Alomations free plan.