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PDF/A Library
Cross-platform PDF/A SDK for converting 20+ file formats into ISO-compliant PDF/A files that pass VeraPDF validation.
VeraPDF-Tested
The world’s most VeraPDF compatible PDF/A converter. VeraPDF is an open source PDF/A validator supported by the PDF industry and funded by the EU’s PREFORMA project.
ISO-Compliant
PDF/A files generated with our PDF/A SDK are compliant with the three ISO standards (PDF/A-1, PDF/A-2, PDF/A-3), and cover all conformance levels (A, B, U).
Convert From 20+ Formats
Convert into VeraPDF-valid ISO-compliant PDF/A files from 20+ file formats, including PDF, JPG, HTML, Word, and TIFF. Or, repair non-compliant PDF/A documents.
See Documentation
Batch Convert PDF to PDF/A
Supports high volume PDF to PDF/A batch conversion from the command-line, or as a development library integrated into a document workflow automation.<br /><a href='/documentation/cli/guides/pdfa-manager'>See documentation</a>
Linux, Windows, and More
Convert from PDF to PDF/A on Linux (including Ubuntu), Windows, iOS, Android, Mac, Web, Xamarin, and UWP with your preferred programming language.
Code Samples
See how to validate or convert to PDF/A.
Automate Archiving Workflows
ZUGFeRD Invoices
Insert structured and searchable XML metadata into PDF/A files to create VeraPDF-valid ZUGFeRD electronic invoices.
Regulatory Compliance
PDF/A is now the global standard for digital archiving, being recommended by the UK, US, Germany, Australia, and many other countries.
Digital Signatures
Reliably preserve digital signatures by embedding them in PDF/A files, ensuring long-term document integrity and authenticity.
Reduce Preservation Risk
Minimal Information Loss
PDF features not suitable for archiving, such as encryption, missing fonts, or device-dependent color, are replaced with compliant equivalents.
Consistent, Universal Viewing
Reliably render documents on today's operating systems, and on those far into the future, without the need for specialist software.
Detailed reporting
Track all changes for automatic assessment of data loss, while producing a detailed report of relevant error objects.
Powered by the PDFTron SDK
Easy to Integrate
Code samples, familiar package managers, and a Docker image make it easy to get up and running.
Consistent and Predictable
Our core document engine has been perfected by 20 years of knowledge, innovation, and real-world testing.
Fully Customizable
An open source UI gives you complete freedom to match your look & feel, and optimize the user experience.
Truly Cross-Platform
A single API with consistent function calls across platforms means a shorter learning curve and easier maintenance.
Free Trial
Get unlimited trial usage of PDFTron SDK to bring accurate, reliable, and fast document processing capabilities to any application or workflow.
Select a platform to get started with your free trial.
Web
Android
iOS
Windows
Linux
Unlimited usage. No email address required.