Inline Foil jobs require mask files with your CMYK artwork. The mask shows where the foil is applied. Use 100% black (K) to show where the foil goes. All other areas should be white. 

When uploading your files, please remember to upload one file for your artwork, and a separate one for your mask.
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When creating your Inline Foil artwork, keep the following in mind:
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• The mask and CMYK print file should match exactly in size and position. Proper alignment is critical.
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• Lighter colors are best. The darker the CMYK color, the less vibrant the foil effect.
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• For best results, use San Serif fonts 8pt and larger. If you plan to use a thin Serif font, we recommend going no smaller than 12pt.
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• Inline Foil applied to white areas will appear as plain silver foil.
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• For the best results, your mask file must be submitted as a vector file and created in a program like Illustrator or InDesign.

For plain silver Inline Foil to print, have at least 15% black (K) in the CMYK print file area for the best quality silver foil effect.
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Knockouts in the Inline Foil mask or in the CMYK print file, might create a halo of white around the knockout area.  To prevent this, grow or stroke the Inline Foil area in the mask by 1 pixel. This allows it to bleed into the CMYK area, reducing the halo. Filling in the knockout with a color reduces the effect even more.
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