If you manage digital records for a business, an organization, or even your personal life, you know that keeping documents safe and readable for the long haul is a major priority. Most people default to saving files as a standard PDF (Portable Document Format). However, standard PDFs are not actually designed to last forever.
For files that you need to open and read exactly as they look today, ten or twenty years from now, there is a specialized format you should be using: PDF/A.
In this guide, we will explore what PDF/A is, why it matters for document archiving, and provide real-world examples of when you should use it.
What is PDF/A?
PDF/A stands for Portable Document Format for Archiving. It is an official, ISO-standardized version of the PDF created specifically for the long-term preservation of electronic documents.
The primary goal of PDF/A is simple: to ensure that a document can be opened and displayed exactly the same way in the future, regardless of the software, operating system, or computer being used.
Think of a standard PDF as a dynamic document that can include links, changing fonts, or passwords. A PDF/A, on the other hand, is like a frozen snapshot. It locks everything inside the file so nothing can break or go missing over time.
Standard PDF vs. PDF/A: What's the Difference?
To guarantee that a document remains readable decades from now, the PDF/A format enforces strict technical rules. A standard PDF might rely on your computer to provide certain fonts or colors, but a PDF/A must be completely self-contained.
Here are the key differences:
1. Embedded Fonts
The Problem: If you create a standard PDF using a unique font (like "Helvetica Neue"), and send it to someone whose computer doesn't have that font installed, the document might look distorted or unreadable. The PDF/A Solution: All fonts must be embedded directly inside the file. Even if the font ceases to exist on modern computers in the future, the document will still render perfectly because it carries its own fonts with it.
2. No External Links or Dynamic Content
The Problem: Standard PDFs can include audio files, video clips, or interactive JavaScript. Over years, the software required to play these elements usually becomes obsolete, breaking the document. The PDF/A Solution: Audio, video, and executable code are strictly prohibited in a PDF/A file.
3. No Encryption or Passwords
The Problem: If a standard PDF is password-protected and that password is lost, the document becomes permanently locked. The PDF/A Solution: Encryption is not allowed. Security and access control must be handled by the storage system (like your secure hard drive or document management software) rather than the file itself.
When Should You Use PDF/A? (Real-World Examples)
You do not need to save every single document as a PDF/A. For temporary files or drafts, a standard PDF is perfectly fine. However, PDF/A is crucial for final documents that require permanent storage.
Here are examples of documents that should be archived as PDF/A:
- Legal Contracts: Signed agreements, property deeds, and corporate bylaws that may need to be presented in court years after they were signed.
- Medical Records: Patient histories, test results, and discharge summaries that must remain accessible and unaltered for decades to comply with health regulations.
- Financial and Tax Documents: Annual tax returns, audit reports, and critical accounting ledgers.
- Government Records: Official public records, meeting minutes, and regulatory filings that are mandated by law to be preserved indefinitely.
How to Create a PDF/A File
Fortunately, creating a PDF/A file is a straightforward process. Most modern document software supports exporting to this format.
- From Microsoft Word or Google Docs: When you choose "Save As" or "Export" and select PDF, look for an "Options" or "Advanced" button. There is usually a checkbox labeled "ISO 19005-1 compliant (PDF/A)".
- Using Scanners: If you are digitizing physical paper documents, check your scanner's software settings. Most professional scanners offer a direct "Scan to PDF/A" option.
- Converting Existing PDFs: If you have standard PDFs that need archiving, you can use dedicated PDF processing tools to convert them into a compliant PDF/A format.
Conclusion
By standardizing your final document storage on the PDF/A format, you eliminate the risk of files becoming unreadable in the future. It is a simple technical step that provides a robust guarantee: the documents you archive today will remain perfectly intact for the generations that need them tomorrow.