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PDF to PDF/A
Transform your PDF files into PDF/A for reliable archiving and permanent preservation. Choose the PDF/A conformance level that fits your requirements.
Select PDF files
or drop PDF here
With PdfLion, you can seamlessly convert standard PDFs to the PDF/A format for long - term preservation. Select the ISO - compliant PDF/A level that best suits your archival needs.
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ISO - standardized PDF/A
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Convert PDFs to PDF/A free
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TLS encryption for secure document processing
Trusted PDF/A Conversion for Long - Term Archiving
PDF/A is a specialized, ISO - certified version of the PDF format created for digital preservation. Unlike regular PDFs, it removes features unsuitable for archiving - such as encryption or non - embedded fonts - ensuring your files stay readable decades into the future. PdfLion provides a simple and reliable way to achieve this.
Secure, Free PDF/A Conversion
No need to buy costly software. Our conversion process is encrypted with TLS, and your uploaded files are permanently deleted within one hour, keeping your data safe and private.
Works Across Windows, Mac, Linux & Mobile
Whether you're on Windows, macOS, Linux, or a mobile device, PdfLion works smoothly in any browser. Convert PDFs to the archival PDF/A format instantly - no installation required.
Preserve Your Files with PdfLion
Use PdfLion to convert your PDFs into durable PDF/A files that follow international archival standards. Choose from multiple ISO PDF/A levels and keep your documents safe for the long term.
PDF/A - The ISO - Standard Archival Format
Ensure long - lasting accessibility by converting your files to PDF/A, the official ISO - standardized archival format. PdfLion supports major conformance levels including PDF/A - 1b, PDF/A - 2b, and PDF/A - 3b - allowing you to pick the version that fits your preservation requirements.
Convert to PDF/A Anytime with PdfLion
All conversions take place in the cloud, so your device uses no extra processing power. After creating your PDF/A file, you can also compress or password - protect it for enhanced security.
Frequently Asked Questions
Yes. This PDF to PDF/A converter is free to use online. You can convert PDF files to the PDF/A standard without registration or software installation.
PDF/A is an ISO-standardized format designed for long-term document archiving. It ensures fonts, colors, and content are embedded for reliable future access.
Yes. All files are processed using secure HTTPS encryption. Uploaded PDFs and converted PDF/A files are automatically deleted from our servers after a short period to ensure privacy and security.
How to convert a pdf to pdf/a free?
To convert a PDF to PDF/A format for free, you can use the online tool PdfLion. Here's a step - by - step guide on how to do it:
- Click to select or drag & drop to upload your PDF files into our PDF to PDF/A conversion tool.
- In the conversion settings, choose the PDF/A format you need. Common options include PDF/A - 1b, PDF/A - 1a, PDF/A - 2b, PDF/A - 2u, PDF/A - 2a, or PDF/A - 3b, PDF/A - 3u, PDF/A - 3a depending on your requirements for archiving and document preservation.
- Click “Convert to PDF/A” and wait a few seconds to start the conversion process. This may take a few moments, especially for larger files or if the service experiences high traffic.
- Your PDF files will be ready shortly. You can download your PDF/A file or share the link.
Remove pages
This file requires password
Ignore these files
wrong password
Some file(s) requires password
Damaged/Corrupted File
We are unable to process corrupted or damaged files. To check if your file is compromised, try opening it with any PDF reader. If it fails to open, the file may be damaged. Please restore the file before attempting conversion again.
