PDF/A is a family of ISO 19005 standards for long-term preservation. Profiles place constraints on a PDF and its dependencies, for example embedded fonts. Different versions and conformance levels exist; use the profile requested by the receiving archive.
PDF and PDF/A are not interchangeable labels
A filename ending in .pdf does not tell you whether the file conforms to PDF/A. Neither a visible page preview nor a claim in metadata is a full conformity check. Use a validator for the required profile.
Can you compress a PDF/A file?
Treat the edited copy as a new document requiring validation. Compression, merging, signing or rebuilding pages can affect the features needed for conformity. Keep the validated original. If an archive imposes a size limit, check its accepted workflow before editing.
What ShrinkBeam can and cannot confirm
ShrinkBeam processes PDFs locally but does not convert to PDF/A or validate PDF/A conformity. Its download size and page preview do not establish archival compliance. Use its PDF tools for copies where ordinary PDF is accepted; do not rely on them to preserve a certified archival master.
A safe workflow for an archive request
- Check the exact PDF/A profile and size limit specified by the recipient.
- Export from software that explicitly supports that profile.
- Validate the exported document with a suitable PDF/A validator.
- After any further editing, validate the final copy again and keep the original.
If ordinary PDF is accepted
The PDF hub offers compression, page organization and combining documents. Check readability, all required pages and the actual bytes before submitting the result. These checks serve usability; they are not PDF/A validation.
Your next step
The tools process selected files locally. Keep your original and check the download.
Sources
Reviewed on October 8, 2026.