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PDF to PDF/A Converter

Convert 20+ file formats into ISO-compliant PDF/A files that pass VeraPDF validation.

Try our new free PDF/A Converter

We redesigned it and added more free online document tools. We think you'll love it.

Try free on PDF.Online

Drag and drop files here to convert to PDF/A

Files are private and automatically deleted after 48 hours.
Automated or batch conversion is available through our PDF/A library .

What is PDFTron PDF SDK?

PDFTron is a software development kit (SDK) that can be used to rapidly embed PDF functionality into any application or workflow. Choose from 100+ features, such as viewing, annotation, and more.

PDF/A Library

Easily integrate our PDF/A technology into your application or workflow to add functionality for converting 20+ file formats to ISO-compliant PDF/A files that pass veraPDF validation. Learn More

VeraPDF-Tested

PDF/A files created with our free online tool are ISO-compliant and pass VeraPDF validation. VeraPDF is an open source PDF/A validator supported by the PDF industry and led by the Open Preservation Foundation.

20+ Supported File Formats

  • PDF, PDF/A
  • DWG, DXF, DGN
  • JPG, BMP, TIF, PNG, WMF, EMF, GIF
  • DOC, DOCX, XLS, XLSX, PPT, PPTX
  • HTML, RTF, ODT, ODS, ODP, TXT, CSV
  • Subtypes and Conformance Levels

    Getting a typical PDF file to conform to PDF/A-1 usually requires the most changes. With PDF/A-2, in contrast, you will need to make fewer changes and you will get smaller files. PDF/A-3 is essentially the same as PDF/A-2, but it allows for the embedding of non-PDF/A files.

    As for conformance level, Level A is often not practical because of missing Unicode orsemantic information in the source. Level B it is the easiest conformance level to target while ensuring reliable rendering. Level U ensures that all text has Unicode equivalents. Learn More

    Code Samples For Our PDF/A Library

    See how to validate existing PDF documents for PDF/A compliance or convert 20+ file formats into PDF/A files.
    C# C# (.NET Core) JS (Node.js) C# (Xamarin) C++ Java Java (Android) Kotlin Obj-C PHP Python Ruby Swift VB Go

    You can also convert files and repositories through an easy-to-use command-line tool (Windows, Linux, macOS).

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