A good file is half of a beautiful print. Here is how to prepare your logo or design for a T-shirt, a sweatshirt or DTF sheets, even if you are not a graphic designer.
The right formats
- Transparent-background PNG: the ideal format for a colour print. Anything transparent will not be printed.
- PDF, AI or SVG (vector): perfect for a logo, because it can be enlarged without any loss of quality.
- JPG: acceptable for a photo, but it always has a background (often white), which will be printed.
The right resolution
Aim for 300 dpi at print size. In practice, for a design 28 cm wide, you need about 3,300 pixels in width. For a full 35 × 40 cm DTF sheet: 4134 × 4724 pixels. An 800-pixel image found online will look blurry at a large size.
The most common mistakes
- A white background around the logo: it prints as white on a coloured T-shirt. Remove it (transparent background).
- A screenshot or an image sent through a messaging app: often too small and compressed.
- Lines that are too thin (under 1 mm): they may not hold well in the wash.
- Text that is too small: keep at least 1 to 2 cm of letter height.
- A colour close to the textile: a navy logo on a black T-shirt will not be seen.
Fonts and colours
Convert text to outlines (or send the font) so that it does not change. Colours on screen are always a little brighter than on fabric: for a precise company colour, give the reference in your quote.
Don’t have a perfect file?
Send what you have: we check every file free of charge before printing and warn you if there is a risk. In our tool, you can also type a text directly, without a file. And only use images that you have the right to print.
Take action: customise your garment online from 1 item, with a live preview, or request a quote for a bulk order.



Share:
Cheap personalised T-shirts: 8 tips to pay less
What size logo on a T-shirt? The placement guide