PDFbolt — Free online PDF tools
PDF to PDF/A
Convert to PDF/A for long-term archiving (checked when validation is available).
PDF/A is a version of PDF designed for long-term preservation: it embeds everything the file needs to display correctly years from now, which is why archives often require it.
PDFbolt targets common PDF/A levels. Because the standard is strict, some documents need adjustment to fully comply — the result message explains how the conversion went.
How to convert PDF to PDF/A
- Choose the PDF you want to archive.
- Select the PDF/A level you need (for example PDF/A-1b, 2b, or 3b).
- Run the conversion.
- Download the PDF/A file and read the result message.
Frequently asked questions
Which PDF/A level should I pick?
PDF/A-1b is the most widely accepted baseline; choose 2b or 3b only if required.
Why is my PDF/A file larger?
PDF/A embeds fonts and color profiles so the document is self-contained.
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