PDF to PDF/A
Convert PDF to archival PDF/A format for long-term storage.
Drag & drop files here, or click to select
About PDF/A:
- PDF/A-1b: Basic layout preservation, suitable for most archival needs
- PDF/A-1a: Includes accessibility features and logical structure
- PDF/A-2: Enhanced features like JPEG 2000, transparency, digital signatures
Note: This converter adds basic PDF/A metadata and structure. Full compliance validation may require specialized tools.
How to Convert a PDF to PDF/A Archival Format
Upload your PDF document using the file upload section on this page.
Choose the PDF/A conformance level that fits your requirements (1b, 1a, 2b, 2a, or 2u).
Click Convert to generate a PDF/A file with the required metadata and conformance markers.
Download the converted file for long-term archiving, regulatory submission, or records management.
Why Convert to PDF/A with SonuPDF?
Multiple Conformance Levels
Supports PDF/A-1b, 1a, 2b, 2a, and 2u conformance options so you can match the exact archival standard required by your institution or regulation.
Embedded Metadata
Adds XMP metadata including conformance level, producer, and creation date so the file is properly identified as an archival document.
Self-Contained Output
The PDF/A format bundles all resources needed to display the document reliably, removing dependencies on external fonts or color profiles.
Browser-Based Conversion
Conversion uses pdf-lib in your browser so sensitive documents like legal records or financial statements never leave your device.
Frequently Asked Questions – PDF to PDF/A
PDF/A-1b (Basic) ensures formatting layout preservation of the document. PDF/A-1a (Accessible) additionally requires tagged structure for accessibility and text reflow.
PDF/A-1b is the most widely accepted for general archiving. Choose PDF/A-2 levels if your original PDF uses transparency, layers, or JPEG 2000 images.
This tool adds PDF/A metadata and conformance markers. For strict regulatory compliance, validate the output with a dedicated PDF/A validator like VeraPDF.
No. Remove the password first using the Unlock PDF tool before converting to PDF/A format.