Convert PDFs to PDF/A for archival and long-term preservation. Choose a specific PDF/A ISO conformance level.
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Convert PDFs to PDF/A for long-term archiving with the PDFSkill tool. Select the ISO conformance level that suits your archival needs.
ISO-standardized PDF/A
Convert PDFs to PDF/A free
TLS encryption for secure document processing
PDF/A reliable archiving and long-term preservation
PDF/A is an ISO-standardized version of PDF designed for durable digital preservation. It omits features not suitable for long-term archiving, such as font linking (versus font embedding) and encryption. PDFSkill is your ultimate tool.
Secure and free PDF/A conversion.
No pricey software required to convert PDF to PDF/A. Files are processed over TLS and permanently deleted within an hour to safeguard your data.
Available on Windows, macOS, Linux, and mobile
PDFSkill runs in any browser, offering cross-platform compatibility on macOS, Windows, Linux, and mobile. Convert PDFs to PDF/A without downloads, quickly and for free with PDFSkill.
Convert and securely preserve your documents with PDFSkill
With PDFSkill, convert PDFs to PDF/A quickly while keeping them future-proof and compliant with archival standards. Choose from multiple PDF/A ISO conformance levels to fit your needs. Try PDFSkill today and protect your important documents for the long term.
PDF/A: The ISO-standardized format for PDFs
Ensure future reproducibility and print accuracy by converting to ISO-standard PDF/A. PDFSkill's converter supports common conformance levels: PDF/A-1b, PDF/A-2b, and PDF/A-3b. Choose the right PDF/A profile for your archival goals and safeguard long-term document preservation.
Convert PDFs to PDF/A anywhere, anytime with PDFSkill
One major advantage of our online service is cloud-based processing, so no strain on your device's resources. When your PDF/A is ready, you can compress it and add password protection for extra security.
Frequently Asked Questions
Yes. This PDF to PDF/A converter is free to use online. You can convert PDF files to the PDF/A standard without registration or software installation.
PDF/A is an ISO-standardized format designed for long-term document archiving. It ensures fonts, colors, and content are embedded for reliable future access.
Yes. All files are processed using secure HTTPS encryption. Uploaded PDFs and converted PDF/A files are automatically deleted from our servers after a short period to ensure privacy and security.
How to convert a PDF to PDF/A for free
To convert a PDF to PDF/A for free, use the online tool PDFSkill. Here's a quick, step-by-step guide:
Click to select or drag and drop your PDFs into our PDF-to-PDF/A converter.
In the conversion settings, select the desired PDF/A conformance level. Common options include PDF/A-1b, PDF/A-1a, PDF/A-2b, PDF/A-2u, PDF/A-2a, or PDF/A-3b, PDF/A-3u, and PDF/A-3a, depending on your archiving and preservation needs.
Click 'Convert to PDF/A' to begin the conversion. The process may take a moment, particularly for large files or during peak traffic.
Your PDF files will be ready momentarily. Download your PDF/A file or share the link with others.
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PDF to PDF/A
PDF/A is an ISO-standardized variant of the Portable Document Format (PDF) designed for the archival and long-term preservation of electronic documents.
Select the conformance level for your document conversion:
Based on PDF 1.4, Level B (basic) conformance with mandatory requirements:
Based on PDF 1.7 (ISO 32000-1), Level B (basic) conformance requirements plus new features:
JPEG 2000 image compression
Support for transparency effects and layers
Embedding of OpenType fonts
Supports digital signatures in line with the PDF Advanced Electronic Signatures standard.
Option to embed PDF/A files to streamline archiving multiple documents as a single file.
Based on PDF 1.7 (ISO 32000-1), Level B (basic) conformance requirements plus new features:
Text has unicode mapping
JPEG 2000 image compression
Support for transparency effects and layers
Embedding of OpenType fonts
Supports digital signatures in line with the PDF Advanced Electronic Signatures standard.
Option to embed PDF/A files to streamline archiving multiple documents as a single file.
Based on PDF 1.7 (ISO 32000-1), Level A (accessible) conformance requirements plus new features:
JPEG 2000 image compression
Support for transparency effects and layers
Embedding of OpenType fonts
Supports digital signatures in line with the PDF Advanced Electronic Signatures standard.
Option to embed PDF/A files to streamline archiving multiple documents as a single file.
Based on PDF 1.7 (ISO 32000-1), Level B (basic) conformance with additional features:
Supports embedding XML, CSV, CAD, word-processing documents, spreadsheets, and other file formats in PDF/A-conforming documents
JPEG 2000 image compression
Support for transparency effects and layers
Embedding of OpenType fonts
Supports digital signatures in line with the PDF Advanced Electronic Signatures standard.
Option to embed PDF/A files to streamline archiving multiple documents as a single file.
Based on PDF 1.7 (ISO 32000-1). Level B (basic) conformance with additional features.
Text has unicode mapping
Supports embedding XML, CSV, CAD, word-processing documents, spreadsheets, and other file formats in PDF/A-conforming documents
JPEG 2000 image compression
Support for transparency effects and layers
Embedding of OpenType fonts
Supports digital signatures in line with the PDF Advanced Electronic Signatures standard.
Option to embed PDF/A files to streamline archiving multiple documents as a single file.
Based on PDF 1.7 (ISO 32000-1). Level A (accessible) conformance with added features:
Supports embedding XML, CSV, CAD, word-processing documents, spreadsheets, and other file formats in PDF/A-conforming documents
JPEG 2000 image compression
Support for transparency effects and layers
Embedding of OpenType fonts
Supports digital signatures in line with the PDF Advanced Electronic Signatures standard.
Option to embed PDF/A files to streamline archiving multiple documents as a single file.
PDF/A-4 built on PDF 2.0 (ISO 32000-2) conformance requirements, with added features:
Better supports archiving of fillable forms
Simplifies the handling of digital signatures
Enhanced XMP metadata for comprehensive document management and archival capabilities.
Supports embedding of additional PDF/A files and supplementary materials.
Guarantees consistent color reproduction across devices.
Ensures PDF/A-4 documents are readable by PDF 2.0-compliant viewers.
Interoperability across different systems and platforms.
PDF/A-4e built on PDF 2.0 PDF/A-4 (ISO 32000-2) conformance with added features:
Supports Rich Media, 3D annotations, and embedded files.
PDF/A-4f built on PDF 2.0 PDF/A-4 (ISO 32000-2) conformance with added features:
Supports embedding files from any format.
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