Color mode: CMYK recommended for best print accuracy
Resolution: 300 DPI at final size for sharp text and graphics
Bleed: Add 0.125" bleed on all sides for full-bleed backgrounds
Safe area: Keep important text and logos at least 0.25" inside the trim
Fonts: Convert fonts to outlines or embed them in the file
Contrast: Use bold colors and large text for readability from a distance
Surface note: Car magnets work best on clean, flat metal surfaces; they do not adhere to aluminum, plastic, or fiberglass panels