Convert PDF to PDF/A
Convert a PDF to PDF/A for long-term archiving and compliance.
How to use PDF/A
- Upload the PDF file you want to convert.
- Select the PDF/A compliance level (PDF/A-1b or PDF/A-2b).
- Click "Convert to PDF/A" and wait for the process.
- Download the archived PDF/A file.
Features
- Strips JavaScript, actions and attachments
- Writes the mandatory PDF/A XMP identity
- Locks a fixed PDF header version
- Reports fonts that still need embedding
Files are processed in your browser and never leave your device.
About PDF/A
PDF/A is the archival standard: self-contained, with fonts embedded and no external dependencies. Converting a regular PDF to PDF/A makes it suitable for archives, courts and regulators that require a document to be readable decades from now, without relying on fonts or links that may disappear.
Longevity Over Preservation
PDF/A is often described as a preservation format, but the distinction that matters is self-containment. A regular PDF can reference a font installed on the author's machine, or embed a color profile that one particular printer driver resolved at export time. Open that file a decade later on a machine that never had those fonts and you get substituted glyphs, shifted layouts, or washed-out colors, sometimes silently, so nobody notices until the document is already wrong. PDF/A removes those external dependencies by design: every font is embedded, every color is device-independent, and the file renders identically in any compliant reader on any operating system, forever.
What PDF/A Strips Away
Compliance is a trade. To guarantee the document will still open and look correct in 2045, PDF/A forbids features that could rot: JavaScript, embedded executables, external links that might 404, encryption that depends on key-management schemes that may be deprecated, and interactive form submission. For an archival contract or a public record that is exactly what you want, none of those features carry meaning that should survive. If your working copy needs live hyperlinks or fillable forms, keep that as a separate, non-archival version. The PDF/A copy is the frozen, authoritative record.
Compliance Levels Explained
PDF/A has conformance levels; the two most common for general documents are PDF/A-1b and PDF/A-2b. Level 1 is the oldest and most conservative (it locks to PDF 1.4-era features, uses strict color management, and is the safest bet when a regulator or archive specifies "PDF/A" without further detail. Level 2 is based on a later PDF revision and allows modern compression and transparency while keeping the same visual-fidelity guarantee. The "b" in both means "basic") visually identical rendering, as opposed to "a" (accessible) or "u" (usable) levels that add tagging requirements. When in doubt, ask your archive which level they accept; when nothing is specified, PDF/A-2b is the modern default.
Real cases
Six real-world scenarios where people rely on PDF/A.
Municipal clerk archived a decade of permits overnight
A city clerk’s office held building permits as ordinary PDFs exported from an old scanning suite. Before the records system migrated, the clerk batch-converted the permits to PDF/A so fonts would stay embedded even after the original software was retired. The archive team spot-checked a 2014 permit and a 2019 permit in two different readers, both rendered identical, no missing glyphs.
Hospital compliance officer met a 10-year retention rule
A compliance officer at a mid-size hospital was told their patient-education PDFs had to remain readable for ten years under a new records policy. Converting them to PDF/A removed active content and locked color profiles, and the IT director accepted the archive once the officer showed that the files opened cleanly in a reader that had never seen the original fonts.
University registrar preserved graduation theses
A university registrar’s office received final theses only as Word exports to PDF and worried the files would degrade as Office versions changed. Converting each thesis to PDF/A before deposit into the institutional repository meant the archived copy was self-contained. A student who downloaded a 2016 thesis years later saw the exact layout the original author submitted.
External auditor required PDF/A evidence packs
An external auditor asked a manufacturing client for a PDF/A copy of every signed quality-manual revision going back five years. The quality manager converted the living PDFs to PDF/A, kept the editable originals as working files, and the auditor accepted the evidence pack without a second request for re-export.
Museum digitized donor letters for the permanent collection
A small museum’s registrar digitized a box of mid-century donor letters as ordinary PDFs, then realized the files depended on fonts from a lab machine that was about to be wiped. Converting the letters to PDF/A embedded those fonts permanently. The museum’s digital collection now serves the PDF/A files directly, and the original lab machine was decommissioned without further export.
Court clerk prepared a self-contained appeal bundle
A county court clerk assembled an appeal bundle that opposing counsel had to open on their own systems for years. Converting the exhibit PDFs to PDF/A stripped JavaScript and external links and embedded every font, so the bundle rendered the same on both sides’ machines. The clerk noted zero “missing font” complaints after the change.
Frequently asked questions
What is the difference between PDF and PDF/A?
PDF/A forbids the features that are unsuitable for long-term archiving, such as externally linked fonts, encryption and JavaScript.
Does this guarantee full certification?
It performs the structural preparation in your browser, including removing active content and writing the PDF/A identification. Run a formal validator such as veraPDF before certified archiving.
Is a PDF/A file larger than a regular PDF?
Usually yes, slightly, because fonts are embedded, a small price for a guarantee that the document will not be lost.
Can I edit my PDF/A after converting?
You may add annotations or signatures, but editing the original content breaks compliance. Keep an editable copy as your working file.
Which PDF/A version is produced?
The export targets PDF/A-2B, a widely accepted archival profile that preserves visual appearance and allows embedded images.
Will the file still open in Adobe Reader?
Yes. PDF/A is a restricted PDF profile, not a different format, and every modern reader opens it normally.
Can I convert a signed PDF?
Signatures usually break because the file is rewritten. Keep the signed original and archive a separate PDF/A copy.
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