The short version
PDF/A is a PDF that’s been put on a diet of guarantees. It’s an ISO standard (ISO 19005) designed so a document opens and renders the same way in 2026 as it will in 2056. This tool takes your everyday PDF and outputs the PDF/A-2b flavor, downloaded as yourfile-pdfa.pdf.
Why does that matter? A normal PDF can lean on fonts installed on your machine, link out to external resources, or use features that future readers might not support. Open it on a different computer years later and the layout shifts, or a glyph turns into a little box. PDF/A slams that door shut.
What changes under the hood
The big one is fonts. PDF/A requires every font to be embedded directly inside the file, so the document carries its own typefaces and never has to borrow from the host system. The converter pulls those in.
It also strips out the stuff that breaks archival promises. No JavaScript, no audio or video, no external references, no encryption. The whole point is a sealed, self-sufficient document. Color handling gets pinned down too, with a defined color space so a red stays the same red everywhere.
The “2b” part tells you the conformance level. Level B (for “basic”) guarantees the visual appearance is preserved reliably. The “2” means PDF/A-2, the second generation of the standard, which is more capable than the original PDF/A-1 (it allows things like JPEG2000 compression and layers). For most people filing documents or archiving records, PDF/A-2b is the practical sweet spot.
When you’d reach for this
Court and government filings are the classic case. Plenty of e-filing systems flat-out reject anything that isn’t PDF/A, because the courts need documents that’ll still be readable decades down the line. Same story with patent offices and a lot of regulatory bodies.
Records retention is the other big driver. Hospitals, banks, universities, anyone who has to keep documents for years and prove they haven’t quietly drifted. An archival format that embeds everything is the safe bet.
And sometimes it’s just good housekeeping. If you’re building a long-term personal archive of contracts, tax documents, or scanned letters, converting to PDF/A means future-you isn’t fighting a font that no longer exists.
A few honest caveats
Converting to PDF/A can flatten interactive bits. Form fields you could fill in, certain annotations, or embedded media may get baked into the page or dropped, since those don’t fit the archival rulebook. If you need a fillable form, do the filling first and archive the result.
File size sometimes goes up, not down. Embedding every font and color profile adds weight. If the result feels chunky and you don’t need the archival guarantees on every copy, run the original through the PDF Compressor for a lighter working version and keep the PDF/A as your master.
Want to confirm what changed? Open the output in the PDF Metadata Viewer to check the format markers.
FAQ
Is PDF/A the same as a normal PDF?
Visually, yes, it looks identical. Technically it’s a restricted, self-contained subset built for archiving. Any PDF reader can open it; it just promises to render the same way forever.
What does the “2b” mean?
“2” is PDF/A-2, the second version of the standard. “b” is conformance level B, which guarantees reliable visual reproduction. It’s the most common choice for everyday archiving and filing.
Will my fonts survive?
Yep, that’s the headline feature. Every font gets embedded into the file, so the document never depends on what’s installed on the reader’s machine.
Can I convert it back to a regular PDF later?
A PDF/A file is already a valid PDF, so it opens anywhere as is. There’s no real “convert back” step needed for reading. If you want to edit it freely, just open and re-save in your PDF editor.
Does this work on scanned documents?
It does, with one caveat. The conversion preserves the page images and makes the file archival, but it won’t add a searchable text layer that wasn’t there. Scan-only PDFs stay image-based.