PDF/X is an ISO standard designed specifically for print production. Many professional print shops require files in PDF/X format because it enforces the technical requirements needed for reliable printing.
What is PDF/X?
PDF/X is a subset of the PDF format that restricts certain features and enforces others to ensure consistent print output. A PDF/X file is guaranteed to contain:
- All fonts embedded
- A defined colour space (typically CMYK with an ICC profile)
- No transparency issues (in PDF/X-1a)
- Bleed and TrimBox information
PDF/X Variants
- PDF/X-1a — strictest standard; requires CMYK/spot colours only, no transparency
- PDF/X-3 — allows colour-managed RGB and ICC profiles
- PDF/X-4 — most modern standard; supports live transparency and layers
Ask your print shop which variant they require. PDF/X-4 is increasingly standard for modern digital and offset printing.
How to Export as PDF/X
In InDesign: File → Export → Adobe PDF (Print) → select PDF/X-4 or PDF/X-1a preset. In Illustrator: Save As → Adobe PDF → select a PDF/X preset.
Convert an Existing PDF to PDF/X
If you only have a standard PDF, PrintConvert247 can convert it to PDF/X-4 or PDF/X-1a automatically, including ICC profile embedding and font checks.
Convert your PDF to PDF/X — automatically
Upload your file and get a PDF/X-compliant print-ready version in seconds.
Convert to PDF/X →