PDF a PDF/A
Convierte cualquier PDF a PDF/A-2b o PDF/A-3b para el archivado a largo plazo — el formato que exigen administraciones públicas y juzgados. Se ejecuta por completo en tu navegador.
PDF/A is the archival subset of PDF, and it exists because an ordinary PDF is not self-contained: it can reference fonts the reader is expected to have, run scripts, or point at content elsewhere, and in twenty years those assumptions fail. PDF/A forbids that — everything needed to render the page has to be inside the file. It is what public administrations, courts and digital archives require when a document has to be readable for decades.
Two levels are offered. PDF/A-2b is the standard choice and what most archives ask for. PDF/A-3b gives the same guarantees but also permits embedded attachments, which is why electronic invoices use it: the human-readable page and the machine-readable XML travel as one file. The conversion is best-effort — formal validation is a separate step that no browser can perform, so if a specific archive demands a validation report, produce the file here and validate it with their tool.
How it works
- Drop in the PDF.
- Choose PDF/A-2b, or PDF/A-3b if the file must carry attachments.
- Convert and compare the before-and-after size.
- Download the PDF/A file.
What people use it for
- Filing a document with a public administration that only accepts PDF/A.
- Archiving records that must still open in twenty years.
- Producing a PDF/A-3b container for an electronic invoice with its XML inside.
Frequently asked questions
- Is my file uploaded to a server?
- No. The file is opened by JavaScript and WebAssembly running inside your own browser tab. It is never uploaded, there is no server-side processing and nothing is stored — closing the tab discards everything.
- PDF/A-2b or PDF/A-3b?
- 2b unless you need attachments. Both give the same archival guarantees; 3b additionally allows embedded files, which is what electronic invoicing uses to carry the XML alongside the readable page. If the office did not ask for 3b, use 2b.
- It says the conversion engine could not run.
- That is about the engine, not your file — the conversion needs Ghostscript, and it could not start. Nothing is wrong with the PDF you supplied. Check your connection and try again.
- Is the result formally validated?
- No. The conversion is best-effort and most archives accept it, but formal validation — with a tool such as veraPDF — cannot run in a browser. If your recipient requires a validation report, generate the file here and validate it with their tool.
- Why did my file get bigger?
- Because PDF/A requires everything to be embedded, particularly the fonts. A document that referenced common fonts by name now carries them, and that is the price of a file that still renders identically in twenty years.
Herramientas relacionadas
Comprimir PDF
Reduce el peso de un PDF sin convertir el texto en imagen — elige el nivel, mira el nuevo tamaño, todas las letras siguen seleccionables.
Comprimir imágenes
Reduce JPG, PNG y WebP para la web en un clic — control de calidad, resize opcional, lote en zip. Todo en tu navegador.
PDF a escala de grises
Convierte todas las páginas a blanco y negro — perfecto para imprimir más barato.
Optimizar para la web
Lineariza un PDF para una vista web rápida y streaming progresivo.