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PDF to PDF/A Converter – Convert to ISO-Compliant Archival PDF Free

Convert PDF files to PDF/A-1b, PDF/A-2b, or PDF/A-3b (ISO 19005) for long-term archiving and legal compliance. Required for EU courts and public archives. Free.

PDF

Select a PDF to convert to PDF/A

Drag & drop your .pdf file here

.pdf supported · Up to 100 MB

How it works

Convert PDF to PDF/A in 3 simple steps

No software to install. Works on any device with a modern browser - desktop, tablet or mobile.

01

Upload your PDF

Click "Select PDF file" or drag and drop. Works with any standard PDF - scanned documents, reports, contracts or presentations.

02

Choose a conformance level

PDF/A-1b is the most compatible. PDF/A-2b (recommended) supports modern features. PDF/A-3b additionally allows embedding any file type as an attachment.

03

Download your PDF/A file

Your archival PDF is ready in seconds. The output is a standards-compliant PDF/A file accepted by courts, governments and long-term archiving systems.

Why SupaPDF

Everything you need for PDF archival compliance

Trusted by developers and businesses worldwide for reliable, standards-compliant document conversion.

Three conformance levels

PDF/A-1b for maximum compatibility, PDF/A-2b for modern PDFs with transparency and JPEG 2000, and PDF/A-3b for files with embedded attachments. We support all three.

Private & secure

All uploads use encrypted HTTPS. Your files are permanently deleted from our servers immediately after your download is complete.

Accepted everywhere

PDF/A is the ISO-standardised format required by courts, government agencies, healthcare systems and regulated industries for long-term document archiving.

Full developer API

Automate PDF to PDF/A conversion in your own apps using our REST API. Specify the conformance level per request for precise compliance control.

Developer API

Automate PDF to PDF/A conversion

Use the SupaPDF REST API to convert PDFs to archival PDF/A format programmatically. Specify the conformance level per request.

curl -X POST https://api.supapdf.com/v1/jobs \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tag": "pdf-to-pdfa-job",
    "tasks": {
      "upload-1": {
        "operation": "import/upload"
      },
      "convert": {
        "operation": "pdf_to_pdfa",
        "input": ["upload-1"],
        "options": { "level": "2b" }
      },
      "export-result": {
        "operation": "export/url",
        "input": ["convert"]
      }
    }
  }'

FAQ

Frequently asked questions

Common questions about PDF/A archival conversion.

Ready to convert your PDF to PDF/A?

Free to use · No account required · Instant download