Seamless pattern guide
How do you prepare a seamless pattern for fabric printing?
Begin with the fabric printer’s current specification, decide the physical size of one repeat, and proof the design on the intended substrate before ordering a large quantity.
Ask the printer for the exact specification
Fabric services differ in accepted formats, resolution, file-size limits, color workflows, printable width, and available repeat layouts. Read the current upload instructions for the chosen product rather than exporting from a generic preset. Record whether the service wants a single repeat tile or a fully composed sheet and whether it changes uploaded resolution automatically.
Spoonflower currently recommends JPG or PNG files in sRGB, saved at the intended physical dimensions at 150 DPI and under 40 MB. That is a Spoonflower workflow, not a universal law for all textile printers. Another mill may request 300 PPI, TIFF, a specific ICC profile, indexed colors, or a production-ready full-width layout.
Choose the physical repeat size
The number of pixels does not decide how large flowers or objects appear on fabric until a density or physical measurement is assigned. Decide how many inches or centimeters one tile should cover. For a six-inch tile at 150 PPI, prepare 900 pixels across. An 8192-pixel tile provides room to reduce the scale or support a very large repeat without immediate upsampling.
Print a paper mockup or view a ruler-calibrated preview. A repeat that looks balanced on a monitor may feel too dense on a dress or too sparse on a small accessory. Consider the finished product, viewing distance, seam placement, and the amount of fabric visible at once. Pattern scale is a design choice, not merely a quality setting.
Set repeat layout, color, and file format
A basic repeat places identical tiles in aligned rows and columns. Half-drop and half-brick arrangements stagger alternate rows or columns, while mirror repeats reflect copies. Use the layout the tile was designed for. Applying a half-drop to a basic tile changes the rhythm but may still be visually acceptable; applying arbitrary spacing creates exposed background gaps.
Work in the color space requested by the printer. Spoonflower recommends sRGB because its upload system uses that workflow. Screen color is emitted light, while fabric color depends on ink, fiber, weave, coating, and lighting. Soft neutrals and saturated colors can shift substantially. Do not promise an exact textile color from an uncalibrated monitor or a web preview.
Export one high-quality file in the accepted format. Preserve the complete tile bounds and avoid repeated JPEG saves. Transparent PNG may be useful only if the service and intended background support transparency. Check the final byte size as well as dimensions, because a technically correct file can still exceed an upload limit.
Proof the repeat on the real substrate
Repeat the tile in a grid before upload and inspect joins, tracking, and motif scale. Then use the service preview to confirm the chosen repeat type and physical dimensions. Preview tools are helpful but cannot fully simulate ink spread, fabric texture, stretch, or the way colors change under room lighting.
Order a swatch or the smallest available proof on the actual fabric. Evaluate seams, fine lines, dark areas, background uniformity, color, and motif size after the material is handled normally. Make revisions from that proof and upload a clearly versioned replacement. Only after the proof is accepted should the design move to yardage or product production. The site license remains the authority for permitted uses of downloaded patterns.
