Not every PDF is ready for print straight away. Many files need technical conversion before a print shop can accept them. This guide explains the most common conversions and when they are needed.
Why PDF Conversion is Necessary
Print production has strict technical requirements that differ from digital display. A PDF designed for the web or screen may need conversion in several areas before it is print-ready:
- Colour mode (RGB → CMYK)
- PDF standard (standard PDF → PDF/X)
- Colour profile (generic → ISO Coated v2 or similar)
- Bleed and TrimBox settings
- Resolution optimisation
RGB to CMYK Conversion
This is the most common conversion. RGB files must be converted to CMYK for offset and digital print. See our guide on converting RGB to CMYK for details.
PDF to PDF/X Conversion
Many professional print shops require files in PDF/X format. PDF/X is a subset of PDF that enforces specific requirements for colour, fonts and transparency. The most common variants are PDF/X-1a, PDF/X-3 and PDF/X-4.
Colour Profile Conversion
Different printing processes and paper types require different colour profiles. European offset printing typically uses ISO Coated v2 (for coated paper) or ISO Uncoated. Converting to the correct profile ensures accurate colour reproduction.
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PrintConvert247 handles all common PDF conversions for print in a single step — colour mode, PDF standard, ICC profile and bleed settings.