If you've ever sent a PDF to a commercial printer only to have it returned with "font errors" or "color shifts," you need **PDF/X**. Short for PDF for Exchange, this ISO standard ensures that a document will print exactly as it appears on your screen.
The PDF/X Requirements
To be a valid PDF/X file, the document must follow strict rules:
- All Fonts Embedded: No "substituting" fonts at the print shop.
- CMYK Only: No RGB colors allowed (which are for screens).
- No Multimedia: Audio, video, and 3D content are strictly forbidden.
Which Version to Use?
PDF/X-1a: The most restrictive; supports only CMYK and spot colors.
PDF/X-4: The modern standard; supports transparency and layers.
PDF/X-1a: The most restrictive; supports only CMYK and spot colors.
PDF/X-4: The modern standard; supports transparency and layers.
At pdfblink.com, we understand that document integrity is key. Whether you are merging marketing flyers or compressing a book layout, maintaining the color profile and font data is our top priority.