PDF to PDF/A: Free Archival Format Converter
Tag your PDFs with archival metadata and re-save them in an optimized structure for long-term storage. A fast, browser-based way to prepare documents for your archive. No uploads, no limits — 100% private. Note: this is best-effort metadata tagging, not certified PDF/A validation.
Archival Metadata
Tags your document with consistent archival metadata — title, producer, and creation and modification dates — a useful first step when preparing files for long-term storage.
Optimized Structure
Re-saves your PDF using compressed object streams, which cleans up the document structure and often trims the file size slightly — your page content stays unchanged.
100% Private
Your documents never leave your device. All conversion happens in your browser — no server uploads, no cloud processing.
PDF/A Converter
Tag PDFs with archival metadata for long-term storage
Drag & drop PDF here
or click to select file
Archival Metadata
Tagged for long-term storage
Optimized Structure
Re-saved, often slightly smaller
100% Private
Files never leave your browser
How to Convert to PDF/A
- Upload your regular PDF file
- Click "Convert to PDF/A"
- Download your metadata-tagged PDF
Why Use PDF/A?
- Legal compliance: The PDF/A standard is required for many government and legal documents
- Long-term preservation: Designed to keep documents readable for decades
- Standardized: ISO 19005 international standard
This tool adds archival metadata as a quick first step. For files that must pass a formal PDF/A validator, use dedicated software such as Adobe Acrobat Pro.
Free PDF to PDF/A Metadata Tagger Online
Preparing PDFs for your archive? Our free PDF/A tool tags standard PDF documents with archival metadata and re-saves them in an optimized structure — a fast first step for long-term storage. Unlike iLovePDF or SmallPDF that upload your sensitive documents to remote servers, our tool processes everything in your browser — your files never leave your device, with complete privacy and no daily limits. Please note this is best-effort metadata tagging and does not produce a formally validated, certified PDF/A file — for that, use dedicated desktop software such as Adobe Acrobat Pro.
What is PDF/A?
PDF/A is an ISO-standardized subset of PDF (ISO 19005) created specifically for the long-term digital preservation of electronic documents. While a regular PDF can reference external fonts, include JavaScript, or depend on system resources that may not exist in the future, a PDF/A file is entirely self-contained. Every font, color profile, and resource needed to render the document is embedded within the file itself, ensuring it will display identically on any system at any point in the future.
The two most common conformance levels are PDF/A-1b and PDF/A-2b. PDF/A-1b (based on PDF 1.4) provides the baseline level of compliance — it guarantees reliable visual reproduction and is the most universally accepted version by courts, government agencies, and archives worldwide. PDF/A-2b (based on PDF 1.7) builds on this foundation by adding support for JPEG2000 compression, transparency layers, and the ability to embed other PDF/A files as attachments, making it ideal for more complex modern documents while maintaining full archival compliance.
How to Convert PDF to PDF/A
Convert PDF to PDF/A in 4 simple steps:
- Select your standard PDF file from your device or drag and drop it into the upload area
- Click “Convert to PDF/A” to start
- Processing runs automatically in your browser — archival metadata is added and the document structure is optimized
- Download your metadata-tagged PDF instantly — ready to store in your archive
When to Convert PDF to PDF/A
Legal Document Archiving
Convert contracts, agreements, and legal correspondence to PDF/A for permanent records that meet bar association and legal industry archiving standards.
Government Compliance
Meet federal, state, and municipal document retention requirements. Many government agencies mandate PDF/A for official records and public documents.
Court E-Filing
Many courts require validated PDF/A for electronic case filings. Because those portals run strict compliance checks, verify the file with dedicated PDF/A software before submitting — this tool adds metadata but does not certify compliance.
Long-Term Records
Archive financial records, medical documents, corporate minutes, and insurance policies in a format guaranteed to be readable for decades.
Library Preservation
Digital libraries, museums, and cultural institutions use PDF/A to preserve manuscripts, publications, and historical documents in digital collections.
Regulatory Submissions
Financial regulators, healthcare authorities, and certification bodies often require validated PDF/A. Confirm compliance with a dedicated PDF/A validator before submitting documents prepared here.
Frequently Asked Questions
What is PDF/A?
PDF/A is an ISO-standardized version of PDF specifically designed for long-term digital archiving. Unlike regular PDFs that may depend on external fonts, color profiles, or multimedia, PDF/A files are entirely self-contained - all fonts are embedded, colors are standardized, and no external dependencies exist. This ensures the document will look identical decades from now.
Does this tool produce a certified, validated PDF/A file?
No. This is a lightweight, browser-based tool that tags your PDF with archival metadata (title, author, subject, producer, and creation/modification dates) and re-saves it in an optimized structure. It does not embed fonts, add a color profile (OutputIntent), write XMP conformance metadata, or run a PDF/A validation check, so the output is not a certified PDF/A-1b or PDF/A-2b file. For documents that must pass a formal PDF/A validator (for example, court e-filing portals that reject non-compliant files), use dedicated software such as Adobe Acrobat Pro or a desktop PDF/A validator. This tool is best for adding consistent archival metadata to your PDFs.
Why should I convert my PDFs to PDF/A?
PDF/A ensures your documents remain readable and visually identical for decades regardless of what software or operating systems exist in the future. Regular PDFs can rely on system fonts or external resources that may become unavailable. PDF/A eliminates these dependencies, making it the required format for legal archives, government records, and regulatory compliance.
Will this change my file size?
Usually the file size stays about the same or shrinks slightly. Because this tool re-saves your PDF using compressed object streams, the output is often a little smaller than the original. Your page content, text, and images are passed through unchanged - the tool only rewrites the document structure and metadata.
Can all PDFs be processed by this tool?
Most standard, unprotected PDFs can be processed. Password-protected or encrypted PDFs need to be unlocked first. Note that this tool tags the document with archival metadata rather than rewriting its contents, so it does not strip out features that a strict PDF/A standard prohibits (such as embedded multimedia or JavaScript). If you need a file that passes formal PDF/A validation, run it through dedicated PDF/A software after using this tool.
Is this processing reversible?
The output is a standard PDF file with archival metadata added, so you can open and use it like any regular PDF. Editing it with any PDF editor works normally. If you later need to refresh the archival metadata, simply run the file through this tool again.
Who requires PDF/A format?
Many institutions mandate PDF/A including courts (for e-filing), government agencies (for public records), libraries and archives (for digital preservation), financial regulators (for audit documents), healthcare organizations (for patient records), and the European Union (for official documents). Requirements vary by jurisdiction and industry.
Is this PDF/A converter really free?
Yes, 100% free with no limits. Unlike iLovePDF or SmallPDF that restrict free users to a few conversions per day and require paid subscriptions, you can convert unlimited PDFs to PDF/A - no registration, no watermarks, no hidden fees. All processing happens in your browser for complete privacy.