or drop a PDF here · up to 95 MB
Files are deleted as soon as they are done
How to convert PDF to PDF/A
- Choose your PDF. Select it or drop it into the box.
- Pick the PDF/A version. PDF/A-2b suits most uses. Choose PDF/A-1b if a portal asks for it, or PDF/A-3b if you need attachments.
- Download. Your PDF/A file is ready to upload or archive.
What is PDF/A?
PDF/A (ISO 19005) is a version of PDF made for long-term storage. Everything needed to show the document, such as fonts and colour profiles, is inside the file, and features that could stop it from opening later (JavaScript, links to outside files, encryption) are not allowed. Universities, courts, tax offices and tender portals often require PDF/A uploads.
Which version to choose
- PDF/A-1b: the oldest and strictest; for systems that ask for it by name.
- PDF/A-2b: recommended. Allows transparency and JPEG 2000, and makes smaller files.
- PDF/A-3b: like 2b, and allows files attached inside the PDF (used for e-invoices).
How it is made
The conversion uses Ghostscript, which embeds the fonts, converts colours to sRGB and adds the PDF/A identification. Password-protected PDFs need to be unlocked first with Unlock PDF. To make the file smaller first, use Compress PDF.
Frequently asked questions
How do I convert a PDF to PDF/A?
Select the PDF here, choose PDF/A-1b, 2b or 3b, and click Convert. The PDF/A file downloads straight away.
Is it free?
Yes. PDF to PDF/A conversion is free with no sign-up and no watermark.
Which PDF/A version should I use?
PDF/A-2b, unless the place you upload to asks for PDF/A-1b or PDF/A-3b by name.
Will my PDF look different?
No. The pages look the same; fonts are embedded and colours are stored in a standard way so they stay the same in future.
Is my document kept?
No. It is converted over HTTPS and deleted as soon as the PDF/A file is ready.