White printing on transparent or holographic vinyl is a bit special and requires absolute precision in the placement and layering of the inks. To guarantee a clean and professional result, we need a vector file (.ai, .pdf or .eps format) containing the specific areas where the white ink is to be applied. Pixelated images (JPEG, PNG) do not allow for this precision, which can affect the final result.
💡 In summary: no vector, no control of white ink.
👉 Tip: ask your graphic designer to create a dedicated layer for white ink.