Convert to PDF/X

Convert to PDF/X

Convert to PDF/X is a REST API tool that converts a standard PDF file to one of several target PDF/X formats to meet prepress print requirements.

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Required Parameters
curl -X POST "" \ 
  -H "Accept: application/json" \ 
  -H "Content-Type: multipart/form-data" \
  -H "Api-Key: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
The response for your API Call will display here.
Once you've sent your POST request and received a valid response, you can download your output file using the output URL.
Build your solution

You have document processing problems, we have Solutions. Explore the many ways pdfRest can align your documents with your business objectives.

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Why is pdfRest the best API to convert PDF to PDF/X?

pdfRest offers the best solution for converting PDF documents to PDF/X specifications, because it uses reliable conversion technology, supports robust versions, and works with conditional processing.

Reliable Conversion Technology

Poorly converted documents lead to costly downstream problems, especially in large-scale print operations. When selecting a toolkit to prepare documents for print, you want to be sure you're relying on the most reliable solution.

pdfRest leverages gold-standard Adobe® PDF Library™ technology to generate PDF/X documents that are consistently conformant with ISO 15930 specifications, ensuring PDF content is accurately and thoroughly prepared for print reproduction.

Robust Version Support

pdfRest’s Convert to PDF/X API Tool supports a range of industry-standard PDF/X conformance versions to meet the specific requirements of professional prepress printers around the world:

  • PDF/X-1a
  • PDF/X-3
  • PDF/X-4
  • PDF/X-6

Conditional Processing

Our Convert to PDF/X API Tool pairs perfectly with our Query PDF API Tool to support a preflight print workflow.  Quickly return detailed information about the contents of a PDF, including whether it's already marked as a PDF/X document, whether it contains transparencies, whether it has embedded fonts, and more. Use this returned information to conditionally apply additional process steps, such as converting to PDF/X, only when necessary.

Start from Code Examples
  1. First, you'll need an API Key - to:
    • Stay anonymous with a Guest API Key for 10 free API Calls
    • Sign up for an upgraded API Key with unlimited, continuous service
  2. Choose your programming language
  3. Copy and paste the code to your project
  4. Update Api-Key field with your unique API Key
  5. Update file with the local path to your input
  6. Run this code to send an API Call
See more code examples in our
GitHub repository
Try pdfRest with just a few clicks
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curl -X POST "" \
  -H "Accept: application/json" \
  -H "Content-Type: multipart/form-data" \
  -H "Api-Key: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
  -F "file=@../Sample_Input/ducky.pdf" \
  -F "output=example_out" \
  -F "output_type=PDF/X-4" \

Customize Your Solution
Output Type
Desired PDF/X version for the output PDF.
  • PDF/X-1a
  • PDF/X-3
  • PDF/X-4
  • PDF/X-6
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