Convert to PDF/X

Convert to PDF/X

Convert to PDF/X is a REST API tool designed to create print-ready PDFs using trusted Adobe technology. By converting to PDF/X, developers can optimize PDFs for high-quality printing, ensuring compatibility with prepress print requirements.


  • Automate preflight workflows, eliminating the need for manual processing in Acrobat, Illustrator, or other software.
  • Standardize color profiles and embed fonts to ensure accurate color reproduction and prevent font substitution issues.
  • Guarantee consistent and reliable print quality compatible with any prepress pipeline.
  • Leverage PDF/X-4 and PDF/X-6 for advanced features tailored to modern printing requirements.
  • Ensure compatibility with older printing systems by flattening transparencies and adhering to PDF/X-1a or PDF/X-3.
A bubbling flask with code brackets inside
Try Now with API Lab

Start right from your browser - upload files, choose parameters, generate code, and send API Calls directly from API Lab!  

 to receive your free API Key.
Parameters
Required Parameters
POST
/pdfx
curl -X POST "https://api.pdfrest.com/pdfx" \ 
  -H "Accept: application/json" \ 
  -H "Content-Type: multipart/form-data" \
  -H "Api-Key: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
Response
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.

Browse all Solutions

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 the most reliable conversion technology, supports robust versions, and offers preflight conditional processing.

Guaranteed Print-Ready PDF Results Powered by Adobe

Unlike other PDF/X conversion tools, pdfRest leverages the industry-leading Adobe® PDF Library™, the same technology used by Adobe Acrobat, to ensure the highest quality PDF/X conversions. This gold-standard solution guarantees consistent and ISO 15930-compliant results, preventing printing errors and ensuring your documents are always ready for print production.


  • Accurate Conversions: Meticulous analysis and processing ensures perfect PDF/X output.
  • Industry Standards: Adobe® PDF Library™ guarantees ISO 15930 compliance.
  • Prevent Costly Errors: Reliable conversion eliminates costly reprints and delays.
  • Streamlined Workflows: Seamless API integration helps you automates PDF/X conversion.

Choose pdfRest for unmatched reliability and superior PDF/X conversion results.

Robust PDF/X Version Support with Expert Guidance

Our Convert to PDF/X API Tool offers comprehensive support for a wide range of industry-standard PDF/X conformance versions, ensuring compatibility with diverse printing workflows and regulations worldwide.


  • PDF/X-1a: Ensures that all fonts are embedded, and colors are specified in CMYK or spot colors, offering a solid foundation for reliable printing.
  • PDF/X-3: Expands on 1a with support for wider range of color spaces and profiles, suitable for more specialized printing needs.
  • PDF/X-4: Most widely-used, supports complex transparency effects, layers, JPEG2000, OpenType fonts, and 16-bit images.
  • PDF/X-6: Latest standard, based on PDF 2.0, supports modern features like page-level output intents and enhanced support for multi-channel print color spaces.

By choosing pdfRest, you're not just selecting a tool; you're gaining a trusted partner that understands the complexities of PDF conversion and is committed to providing the highest level of support and guidance.

Efficient Preflight Checklist with Conditional Processing

Leverage Query PDF API Tool to quickly analyze the inner workings of your PDF documents. This powerful tool returns detailed information about the document's content, including:


  • Is it already a PDF/X document? Save time and resources by identifying PDFs that are already compliant and don't require conversion.
  • Does it contain transparencies? If your target printing system doesn't support transparency, the Query PDF API Tool will flag this potential issue.
  • Are fonts embedded? Missing fonts can lead to substitution issues and inconsistent printing results. The Query PDF API Tool identifies this potential problem so you can take corrective action.

Only convert PDFs that truly require it, optimizing your workflow and saving valuable processing time. This powerful combination ensures your documents meet printing standards while maximizing efficiency.

Check out other videos
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
Download our Postman Postman Collection
Read More

Need more help?

Start with a Tutorial for step-by-step guidance

1
1 of 1 pages (6 items)
Customize Your Solution
Output Type

The output_type parameter allows you to select a specific PDF/X version for the output PDF.


Accepts:

  • PDF/X-1a: This standard ensures that all fonts are embedded, and colors are specified in CMYK or spot colors. It's designed for reliable printing, ensuring that the document can be printed without any changes.
  • PDF/X-3: Similar to PDF/X-1a, but allows for the inclusion of color-managed data, such as RGB and ICC profiles. This provides more flexibility in color management while maintaining print reliability.
  • PDF/X-4: Builds on PDF/X-3 by supporting transparency and layers, as well as color-managed data. It's ideal for more complex print jobs that require these additional features.
  • PDF/X-6: The latest in the PDF/X series, designed to support modern print workflows with advanced features like variable data printing and enhanced color management, ensuring high-quality output in complex printing environments.
See Documentation
Generate a self-service API Key now!

Create your FREE API Key to start processing PDFs in seconds, only possible with pdfRest.

Compare Plans
Contact Us