How to Prepare Artwork for Custom T-Shirt Printing: A UK Guide

Starting a custom T-shirt project with ElitePrints begins long before the press starts. Whether you are a UK small business, creator or event organiser, the quality of your printed garment depends heavily on artwork preparation. This guide explains practical steps to ensure your designs translate effectively across printing methods.

Why Artwork Preparation Matters

Clear, correctly formatted artwork reduces print errors and improves consistency. For personalised clothing, small details like colour space and resolution affect how designs appear on fabric. Good preparation supports both digital printing and small-batch production, helping you avoid costly revisions.

Choosing the Right File Format

For most professional print workflows, a high-resolution transparent PNG or suitable vector artwork is commonly useful, although requirements depend on the printing process and printer.

• Vector files (such as AI or EPS) allow scaling without loss of detail and are preferred for logos and typography.
• Raster files (such as PNG or TIFF) work well for photographic elements but require sufficient resolution.
• Avoid low-resolution JPEGs for fine detail, as compression artefacts can appear on fabric.

Vector vs Raster: When to Use Each

Vector artwork uses mathematical paths. It is ideal for branded workwear logos, simple illustrations and text. You can enlarge a vector design for oversized T-shirts without pixelation.

Raster artwork uses pixels. It suits complex artwork such as gradients or photographic prints. Ensure the file is saved at 300 dpi at final print size to maintain clarity on garments.

Resolution and Scale

Resolution is measured in dots per inch (dpi). For garment printing, aim for 300 dpi at the intended print size. If your design will print at 30 cm wide, the file should be 3,543 pixels wide at 300 dpi.

Common Pitfalls

• Scaling up low-resolution images leads to blurriness.
• Using screen resolution (72 dpi) for print creates visible pixels.
• Forgetting bleed areas can cause edge issues on certain print placements.

Colour Choices and Colour Spaces

Colour reproduction varies by fabric and printing method. Use CMYK for process colours in print workflows, but note that direct-to-garment (DTG) and direct-to-film (DTF) processes may interpret colours differently depending on pretreatment and ink.

Managing Colour Expectations

• Dark garments may require white underbase layers, affecting colour vibrancy.
• Fabric composition influences ink absorption; cotton blends can shift tones.
• Provide a colour reference such as a Pantone code where possible, but expect slight variation.

Print Placement and Sizing

Placement affects visual balance. Common positions include centre chest, back print and sleeve.

Standard Print Areas

• Centre chest: typically 25–30 cm wide for adult T-shirts.
• Back print: often larger, up to 35 cm wide for creator merchandise.
• Sleeve: small logos around 8–10 cm.

Sizing for Different Garments

• Children’s T-shirts: reduce artwork proportionally.
• Oversized T-shirts: consider larger prints to match garment scale.
• Hoodies: account for kangaroo pockets affecting centre placement.

Preparing Artwork for Specific Uses

Branded Workwear

For printed workwear, keep logos legible at smaller sizes. Tradespeople often prefer chest placement for visibility. Use bold typography and avoid fine lines that may break during washing.

Event Merchandise

Event T-shirts may include multiple elements such as dates and sponsors. Arrange artwork hierarchically so key information stands out. Test designs on different colours if offering multiple garment options.

Creator Merchandise

Influencer and clothing-brand merchandise often uses back-print designs. Ensure artwork aligns with brand identity through consistent typography and colour palettes. Test limited releases with simple artwork before larger production.

Step-by-Step Artwork Checklist

1. Choose vector format for logos; use high-resolution raster for photos.
2. Set resolution to 300 dpi at final size.
3. Use CMYK colour space; include Pantone references if needed.
4. Add 3 mm bleed if required by your design layout.
5. Separate elements into layers for easier adjustments.
6. Export transparent backgrounds for overlays.
7. Provide both full-colour and single-colour versions.
8. Test print on paper to check legibility.

Common Mistakes to Avoid

• Using web images directly without checking resolution.
• Overlapping text and graphics that reduce readability.
• Ignoring fabric colour impact on light inks.
• Forgetting to outline fonts in vector files.
• Assuming one file suits all garment colours.

Artwork and Print Preparation Tips

• Keep designs simple for small-batch apparel production.
• Use consistent branding across personalised gifts and group clothing.
• Allow space around logos for print placement tolerances.
• Discuss complex designs with your printer before finalising.

Frequently Asked Questions

What file format is best for T-shirt printing?

For most professional print workflows, a high-resolution transparent PNG or suitable vector artwork is commonly useful, although requirements depend on the printing process and printer.

How do I ensure colours match my design?

Use CMYK colour space and provide Pantone references where possible. Be aware that fabric colour and printing method can shift tones slightly.

What resolution should I use for custom prints?

Aim for 300 dpi at the final print size, such as 30 cm wide, to maintain clarity on garments.

Can I use the same artwork for different garments?

Adjust size and placement for each garment type; for example, oversized T-shirts may need larger prints than children’s sizes.

How does fabric affect artwork?

Dark fabrics may need underbases, and blends can alter colour appearance; test designs where possible.

Next Steps

If you are preparing designs for personalised clothing or branded workwear, send your files for review. Our team can advise on suitability for DTF, DTG or other methods. Discuss your project to refine artwork before production.