Convert PDF To PDF/A
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How to convert a PDF document to PDF/A online?
- 1Click "Select File" to choose a PDF file to upload. You can also drag and drop the PDF file.
- 2OneConverter tool will automatically start to convert the file.
- 3Save the PDF/A file to your computer or upload it directly to your cloud storage service.
This process is simple and can be done without needing to install any software, making it convenient for quick conversions.


Converting a PDF to PDF/A
Converting a PDF to PDF/A is quick and handy. It keeps your text, images, and layout looking exactly the same, no matter who opens it or what device they’re using.
PDF/A files are easy to share because they’re optimized for long-term archiving and can be opened on almost any device without any special software. Plus, they’re read-only by default, so no one can accidentally change your content.
Whether it’s a report, legal document, or any other important file, saving it as a PDF/A makes sure it stays neat, professional, and easy for others to view. It’s the perfect way to preserve your work securely for the future.

What is a PDF File?
If you want to maintain the ideal text, image, and layout of a document regardless of the device used to open it, you are most probably looking for a PDF file. It is very common for reports, forms, presentations, eBooks, and resumes to be saved in this format as all information will remain intact when opened on a smartphone, tablet, or computer.
Not only can PDFs be printed easily, but sensitive information contained in them can also be secured through password-protecting mechanisms. Along with this, PDFs are known to be highly versatile for professional and personal use as they can contain buttons, links, and interactive fields.
Regular PDF files can experience slight changes when opened on other systems, which is why people tend to convert them to PDF/A—a special type of PDF made for enduring storage use.
File type: Document File extension: .pdf Developed by: Adobe Systems Initial release: June 15, 1993

What is a PDF/A File?
What separates a PDF/A from other PDF formats is that it is designed specifically for long-term storage and archiving purposes. Over time, documents in PDF/A format will not alter due to technological changes. Features such as audio, video, and external links are not permitted like in traditional PDFs because they often do not function reliably over time.
Because all fonts, images, and formatting are embedded, a PDF/A document is readable on any device, even years later. This format is commonly used for legal documents, government records, invoices, and contracts where document presentation consistency matters.
Changing a regular PDF to PDF/A offers long-term accessibility. It’s ideal for businesses, archives, and anyone managing long-term documents.
File type: Document (Archival) File extension: pdf (PDF/A) Developed by: ISO Initial release: October 1, 2005