The ISO standard for print

Convert your PDF to PDF/X-4

Printers ask for PDF/X — the ISO standard for reliable colour. Upload your PDF and we convert it to PDF/X-4: CMYK colour with a FOGRA51 output intent, embedded fonts and a cleaned-up file ready to deliver.

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The difference

A normal PDF often is not press-ready

Your printer rejects the file because it is not PDF/X.
Screen colours (RGB) shift unpredictably on a printing press.
There is no output intent, so the press cannot interpret your colours.
Interactive elements or encryption sneak in and break delivery.

PDF/X-4 in one upload

A real PDF/X-4 file your printer can accept.
CMYK colour with a FOGRA51 (PSO Coated v3) output intent.
All design fonts embedded so letters are never substituted.
A clean file — no encryption, JavaScript or interactive forms.

How it works

Upload your PDF

Drop in a single PDF or a ZIP with several — guests can upload too.

We convert to PDF/X-4

We convert colour to CMYK, embed the FOGRA51 output intent and your fonts, and clean the file structure.

Download the result

Get a press-ready PDF/X-4 back — one file, or a ZIP for multiple.

What you get

Everything a printer expects from a PDF/X-4 file.

PDF/X-4 standard

The modern ISO 15930-7 print-exchange standard, accepted by virtually every printer.

Output intent

A FOGRA51 (PSO Coated v3) ICC output intent so the press knows your target colour.

CMYK colour

RGB screen colours converted to the CMYK inks a printing press actually uses.

Embedded fonts

The fonts in your design are embedded, so the printer renders the right letters.

When to use it

Sending to a printer

Deliver the PDF/X-4 your print shop asks for, without back-and-forth.

Design agencies

Hand off press-ready files to clients and printers in a consistent standard.

Flyers & brochures

Get colour-critical marketing material onto the press with predictable results.

Final delivery step

Turn a finished design into the exact format the printer needs as the last step.

Learn more about print-ready PDF

How to make a print-ready PDF: the complete guide

CMYK, fonts, bleed and PDF/X — everything a printer needs, explained step by step.

Read article

Convert a PDF to grayscale without Acrobat

Turn a colour PDF into clean black-and-white for cheaper, predictable printing.

Read article

Compress, rasterise and repair your PDFs

Shrink large files and fix problem PDFs before you send them to print.

Read article

Frequently asked questions

What is PDF/X-4?

PDF/X-4 is the ISO 15930-7 standard for delivering files to print. It guarantees managed CMYK colour, embedded fonts and an output intent, so a printer can reproduce your file reliably.

Is the output a certified PDF/X-4 file?

We build the file to the PDF/X-4 structure — CMYK, output intent, embedded fonts and a cleaned-up file. It is prepared on a best-effort basis and not formally certified by a third-party validator. In practice printers accept it directly; if yours requires a certified pre-flight report, run their pre-flight as a final check.

Which output intent (colour profile) do you use?

We embed FOGRA51 (PSO Coated v3), the European standard for coated paper, as the output intent — the most widely accepted profile for offset and digital printing in Europe.

Will my fonts be embedded?

Yes — all fonts from your design are embedded, so your printer always renders your text with the correct letters. The only exception is fonts whose licence forbids embedding; the free print-ready check tells you if any fonts are missing.

How many credits does it cost?

Converting to PDF/X-4 costs 2 credits per document. Multiple files are processed in one go and returned as a ZIP.