PDF to PDF/A Converter

Government portals, court filing systems, university repositories, and records management platforms share one trait: they reject standard PDFs that rely on external fonts, encryption, or embedded media that may become unreadable in ten years. The format they accept is PDF/A, the ISO 19005 archival standard designed to be fully self-contained. A healthcare provider archiving patient records, a lawyer filing with an e-court system, or an accountant submitting to a regulatory body all face the same requirement. The issue has always been that creating a compliant PDF/A file required Adobe Acrobat Pro. This browser-based converter does the same job free, with nothing uploaded to any server.

How It Works

1. Upload your PDF: Click the drop zone or drag your file in. Files up to 100MB are supported. From this point, all processing runs entirely inside your browser. No data leaves your device.
2. Configure your settings: Choose a PDF/A standard (PDF/A-1b for maximum compatibility with older systems, PDF/A-2b for modern archiving with transparency and JPEG2000 support, or PDF/A-3b if you need to embed non-PDF attachments like XML or spreadsheet files). Select an archiving color space (sRGB for web and screen, Adobe RGB 1998 for photographic content, or Coated FOGRA39 for print-press workflows). Choose whether to strip all interactive elements per ISO strict rules, or preserve form visual layout.
3. Convert and download: The tool processes the file client-side, embedding required metadata, attaching the ICC color profile as output intent, removing any encryption or unsupported elements, and tagging the file to the selected ISO 19005 conformance level. Download the PDF/A file directly from the browser.

Compatibility and Support

Supported Input and Output Formats

• Input: Standard PDF files, single-page and multi-page, up to 100MB
• PDF/A-1b (ISO 19005-1): Maximum compatibility baseline; no transparency, no JPEG2000, no layers; works with virtually every archival system built since 2005
• PDF/A-2b (ISO 19005-2): Recommended for most use cases; adds JPEG2000 compression, transparency, layers, and the ability to embed other PDF/A files as attachments
• PDF/A-3b (ISO 19005-3): Identical to PDF/A-2b but allows embedding of any file type as an attachment, including raw XML, XLSX, or CSV, making it suitable for invoice archiving workflows
• Color profiles: sRGB IEC61966-2.1, Adobe RGB 1998, Coated FOGRA39

Unsupported Formats

• Non-PDF inputs cannot be processed. Convert DOCX, XLSX, or other formats to standard PDF first, then run this converter.
• Encrypted or password-protected PDFs are blocked by the ISO 19005 standard itself. PDF/A explicitly prohibits encryption because it would prevent long-term access. Unlock the file using the Unlock PDF tool before converting.
• Audio, video, and JavaScript elements are stripped during conversion. These features are incompatible with all PDF/A standards by design.

File Size Limits

The tool handles PDFs up to 100MB. Since processing runs in your browser, image-heavy or highly complex PDFs near this limit may take longer on devices with limited RAM. Closing other tabs before converting helps on those machines.

Who Should Use This Tool?

• Students: A postgraduate student submitting a doctoral thesis to a university digital repository that requires PDF/A-2b for long-term preservation. Converting takes under a minute and eliminates a common reason for submission rejection.
• Freelancers and Designers: A freelance technical writer delivering documentation to a pharmaceutical client whose quality management system mandates ISO 19005-compliant archiving for all controlled documents.
• Office Professionals: A compliance officer at a financial institution converting signed contract PDFs to PDF/A-3b for the records management system. The option to embed the original Excel attachment inside the PDF/A-3b file keeps everything in one compliant container.
• Developers: A developer building a document intake workflow for a legal tech platform who needs browser-side PDF/A conversion to avoid sending sensitive client documents to third-party processing servers.

Why This Tool Beats the Alternatives

• No account creation, no trial limit, no email required to download the output file
• No watermarks added to the converted PDF/A at any conformance level
• No server upload; cloud-based competitors process your files on their infrastructure, which is a genuine problem for legally privileged or regulated documents
• All three major PDF/A standards in one place; most free online tools support only PDF/A-1b
• Color space selection built in, not just a default sRGB conversion applied to everything regardless of document type
• Interactive element handling gives you control over whether form visuals are preserved, rather than stripping everything silently

Pro Tips

• For most compliance and archiving needs, PDF/A-2b is the right choice. It handles transparency and modern compression better than PDF/A-1b, and unlike PDF/A-3b it does not allow arbitrary embedded files that might raise concerns in regulated environments. Use PDF/A-1b only if the receiving system specifically mandates it.
• If your source PDF contains fillable form fields and your recipient needs to see the field layout (even if they cannot interact with the fields), select "Keep form visual elements" rather than the full strip option. The fields become flat visual elements that look identical on screen and in print.
• Encrypt your PDF with a password before converting if you need to protect the content during transit. Once converted to PDF/A, encryption cannot be added afterward because the standard prohibits it. The correct order is: protect the file for sharing, keep a separate unprotected copy, convert that copy to PDF/A for archiving.

If your document submission is being rejected for non-compliance, select your ISO standard and color space here and convert in seconds. For the reverse workflow, the PDF/A to PDF converter lets you convert back to a standard editable PDF, and the PDF to PDF/X converter handles print-exchange compliance requirements separately.