Transform PDFs into PDF/A for reliable archiving and permanent preservation. Choose the perfect PDF/A conformance level that fits your needs-fast, precise, and future-proof.
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With MorePdf, convert standard PDFs to PDF/A with a single action for enduring preservation. Choose the ISO-compliant PDF/A level that best fits your archival strategy.
ISO - standardized PDF/A
Convert PDFs to PDF/A free
TLS encryption for secure document processing
Elite PDF/A Conversion for Durable, Long-Term Archiving
PDF/A is a premium, ISO-certified variant of the PDF format designed for durable digital preservation. It removes non-archival features such as encryption or non-embedded fonts, guaranteeing readability for decades. MorePdf provides a simple, reliable, all-in-one path to PDF/A compliance.
Secure, Free PDF/A Conversion
No expensive software required. Our conversion is TLS-encrypted end-to-end, and your uploads are permanently purged within one hour, ensuring peak security and privacy.
Premium Cross-Platform Performance Across Windows, macOS, Linux & Mobile
No matter your platform-Windows, macOS, Linux, or mobile-MorePdf delivers seamless browser-based performance. Convert PDFs to archival PDF/A instantly-no installation needed.
Preserve Your Files with MorePdf
Turn PDFs into durable, standards-compliant PDF/A files with MorePdf. Access multiple ISO PDF/A levels and safeguard your documents for the long term.
PDF/A - The ISO Standard for Superior Archival Fidelity
Secure enduring accessibility by converting your files to PDF/A, the ISO-standard archival format. MorePdf supports major conformance levels including PDF/A-1b, PDF/A-2b, and PDF/A-3b-letting you choose the version that best fits your preservation needs.
Convert to PDF/A Anytime with MorePdf
All conversions run in the cloud, freeing your device from extra processing. Once your PDF/A is generated, you can compress or password-protect it for enhanced security.
Frequently Asked Questions
Yes. This online PDF-to-PDF/A converter is free to use-no registration, no software needed, and instant conversions.
PDF/A is an ISO-standardized format designed for durable, long-term archiving. It guarantees embedded fonts, colors, and content for dependable, future-proof access.
Yes. Every file is processed over secure HTTPS with best-in-class encryption. Uploaded PDFs and converted PDF/A files are automatically purged from our servers shortly after processing to ensure privacy and security.
How to convert a PDF to PDF/A - for free
Convert a PDF to PDF/A for free with the online tool MorePdf. Follow this concise, step-by-step guide to get it done:
Click to select or drag-and-drop your PDFs into our premium PDF/A converter.
In the conversion settings, select the PDF/A format that best fits your archive and preservation needs. Available options include PDF/A - 1b, PDF/A - 1a, PDF/A - 2b, PDF/A - 2u, PDF/A - 2a, PDF/A - 3b, PDF/A - 3u, and PDF/A - 3a for a more robust, future-proof result.
Click "Convert to PDF/A" to initiate a fast, seamless conversion. Expect only a moment for typical files, with extended times for large documents or peak usage, all designed for a smoother experience.
Your PDF/A files are ready in moments. Download your polished PDF/A file or share a secure link instantly.
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PDF to PDF/A
PDF/A is an ISO-standardized evolution of PDF, engineered for trusted long-term archiving and safeguarding of electronic documents for years to come.
Select the PDF/A conformance level that best matches your archival goals:
Based on PDF 1.4, Level B conformance delivers essential visual fidelity aligned with strict standards:
Built on PDF 1.7 (ISO 32000-1). Level B conformance, with enhanced features and capabilities:
JPEG 2000 image compression
Support for transparency effects and layers
Embedding of OpenType fonts
Supports digital signatures aligned with PDF Advanced Electronic Signatures (PAdES) standards for trusted authentication.
Enables embedding PDF/A assets to archive complete document sets in a single, streamlined file.
Built on PDF 1.7 (ISO 32000-1). Level B conformance with updated features for a more capable, modern workflow:
Text has unicode mapping
JPEG 2000 image compression
Support for transparency effects and layers
Embedding of OpenType fonts
Supports digital signatures aligned with PDF Advanced Electronic Signatures (PAdES) standards for trusted authentication.
Enables embedding PDF/A assets to archive complete document sets in a single, streamlined file.
Based on PDF 1.7 (ISO 32000 - 1). Level A (accessible) conformance with enhanced features delivering superior accessibility and interoperability:
JPEG 2000 image compression
Support for transparency effects and layers
Embedding of OpenType fonts
Supports digital signatures aligned with PDF Advanced Electronic Signatures (PAdES) standards for trusted authentication.
Enables embedding PDF/A assets to archive complete document sets in a single, streamlined file.
Based on PDF 1.7 (ISO 32000 - 1). Level B (basic) conformance with reinforced features and enhancements for a more capable baseline:
Enables powerful embedding of XML, CSV, CAD, word-processing, spreadsheets, and additional file formats directly into PDF/A-compliant documents
JPEG 2000 image compression
Support for transparency effects and layers
Embedding of OpenType fonts
Supports digital signatures aligned with PDF Advanced Electronic Signatures (PAdES) standards for trusted authentication.
Enables embedding PDF/A assets to archive complete document sets in a single, streamlined file.
Based on PDF 1.7 (ISO 32000 - 1). Level B (basic) conformance with reinforced features and modern enhancements:
Text has unicode mapping
Enables powerful embedding of XML, CSV, CAD, word-processing, spreadsheets, and additional file formats directly into PDF/A-compliant documents
JPEG 2000 image compression
Support for transparency effects and layers
Embedding of OpenType fonts
Supports digital signatures aligned with PDF Advanced Electronic Signatures (PAdES) standards for trusted authentication.
Enables embedding PDF/A assets to archive complete document sets in a single, streamlined file.
Based on PDF 1.7 (ISO 32000 - 1). Level A (accessible) conformance with enhanced features delivering greater accessibility and capabilities:
Enables powerful embedding of XML, CSV, CAD, word-processing, spreadsheets, and additional file formats directly into PDF/A-compliant documents
JPEG 2000 image compression
Support for transparency effects and layers
Embedding of OpenType fonts
Supports digital signatures aligned with PDF Advanced Electronic Signatures (PAdES) standards for trusted authentication.
Enables embedding PDF/A assets to archive complete document sets in a single, streamlined file.
PDF/A-4 built on PDF 2.0 (ISO 32000 - 2) conformance, with enhanced requirements and premium features:
Better supports archiving of fillable forms
Simplifies the handling of digital signatures
Elevated XMP metadata framework delivering comprehensive, scalable data for document management and archival workflows.
Supports embedding of additional PDF/A assets and supplementary materials for a richer all-in-one document.
Guarantees precise color fidelity across devices, workflows, and viewing environments.
Ensures PDF/A-4 documents are fully readable by PDF 2.0–compliant viewers.
Interoperability across different systems and platforms.
PDF/A - 4e, powered by PDF 2.0 and ISO 32000-2 conformance, plus next-level features for unmatched long-term preservation.
Delivers Rich Media, 3D Annotations, and embedded file support-delivered in a unified, premium package for comprehensive archives.
PDF/A - 4f, powered by PDF 2.0 and ISO 32000-2 conformance, with upgraded features:
Enables embedding of arbitrary file formats for a complete, all-in-one archival solution.
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