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PDF to PDF/A
Enable PDF Optimization: transform PDFs into PDF/A for reliable archiving and permanent preservation. Select the PDF/A conformance level that aligns with your performance and efficiency goals.
Select PDF files
or drop PDF here
With PdfZu, quickly convert standard PDFs to PDF/A for long - term preservation. Select the ISO - compliant PDF/A level that best fits 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
Optimized PDF/A Conversion for Long - Term Archiving
PDF/A is an ISO - certified variant of PDF designed for durable digital preservation. It removes non-archival features (such as encryption or non - embedded fonts) to ensure readability for decades. PdfZu offers a fast, reliable path to achieving optimized archival.
Secure, Free PDF/A Conversion
No need to buy costly software. Our optimized PDF workflow uses TLS encryption, and uploaded files are securely erased within one hour, ensuring fast, privacy-preserving handling of optimized PDFs.
Efficient, cross-platform support across Windows, Mac, Linux & Mobile
Whether you're on Windows, macOS, Linux, or mobile, PdfZu runs smoothly in any browser. Convert PDFs to the archival PDF/A format quickly—no installation required.
Preserve Your Files with PdfZu
Use PdfZu to generate durable, optimized PDF/A files aligned with international standards. Select among ISO PDF/A levels to maximize long-term efficiency and performance.
PDF/A - ISO-standard, optimized archival format
Ensure long-lasting accessibility by converting to PDF/A, the ISO-standard archival format. PdfZu supports major conformance levels including PDF/A - 1b, PDF/A - 2b, and PDF/A - 3b, enabling you to choose the version that best fits your preservation requirements and performance goals.
Convert to PDF/A Anytime with PdfZu
All conversions occur in the cloud, minimizing local resource usage for faster, leaner workflows. After generating your PDF/A, you can also compress or password-protect it for enhanced security.
Frequently Asked Questions
Yes. This PDF to PDF/A converter is free online. You can convert PDFs to the PDF/A standard without registration or software installation, with fast, hassle-free operation.
PDF/A is an ISO-standardized format designed for long-term document archiving. It embeds fonts, colors, and content to ensure reliable, optimized access in future workflows.
Yes. All processing uses secure HTTPS. Uploaded PDFs and converted PDF/A files are automatically deleted from our servers after a short retention window to protect privacy and support fast, secure optimization.
How to perform a PDF to PDF/A optimization for free?
To optimize a PDF to PDF/A for free, use the online PdfZu tool. Here's a concise, step-by-step guide to fast, efficient results:
- Click to select or drag & drop to upload your PDFs into our optimized PDF to PDF/A tool.
- To maximize PDF Optimization, set the target PDF/A in the conversion settings to minimize size while preserving usability. 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, chosen to balance archival integrity and efficient rendering.
- Click Convert to PDF/A to initiate a fast, optimized conversion. The process runs quickly for typical files, with longer times for large files or high service load.
- Optimized PDFs are ready promptly. Download the PDF/A file or share a secure link to streamline workflows.
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This file requires password
Ignore these files
wrong password
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Damaged/Corrupted File
We cannot process corrupted or damaged PDFs. To verify integrity, open the file with any PDF reader; if it fails, restore the file before attempting the optimization pass.
