PDF to PDF/A

Convert PDF files to ISO-standardized PDF/A for long-term archiving. Free, instant, browser-based.

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How to do

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3 quick steps to convert PDF to PDF/A.

1

Upload your PDF

Drag and drop or select one or more PDF files to convert.

2

Choose a conformance level

Pick a PDF/A standard and level — PDF/A-2b is recommended for most cases.

3

Convert & download

Click Convert to PDF/A to get an archival PDF — a ZIP if converting multiple files.

FAQs

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Answers about converting PDF to PDF/A.

Talk with the AziPDF AI Voice Assistant using voice or text commands. Simply describe your task, and the AI can merge, split, compress, convert, edit, rotate, and chat with PDFs for you.
PDF/A is an ISO-standardized version of PDF designed for long-term digital archiving. It embeds fonts, color profiles, and metadata so the document renders identically decades from now. Required by government agencies, courts, and institutions for regulatory compliance.
PDF/A-1 (based on PDF 1.4) is the most universally supported. PDF/A-2 (PDF 1.7) adds JPEG 2000 compression, transparency, and OpenType fonts. PDF/A-3 is identical to PDF/A-2 but also allows embedding any file type useful for invoices with attached XML or spreadsheets.
The suffix defines the compliance level. Level b (basic) ensures visual reproducibility. Level u adds Unicode character mapping so text can be reliably searched and extracted. Level a (accessible) is the strictest. It requires tagged content, logical reading order, and full accessibility.
For most use cases, PDF/A-2b is recommended. It balances broad compatibility with modern features like transparency and JPEG 2000. Use PDF/A-1b for maximum compatibility with older systems. Choose PDF/A-3b to embed file attachments. Choose -a variants when full accessibility is required.
Yes. AziPDF is a secure browser-based PDF to PDF/A converter that processes PDF files entirely on your device. Your files are never uploaded to any server, and all conversion happens locally in your browser.
No. There are no file size limits or daily usage restrictions. Because PDF to PDF/A conversion happens locally in your browser, the practical limit depends on your device memory and performance.
Yes. Upload several PDFs and they all convert to individual PDF/A files, packaged into a single ZIP archive for easy download.
Some PDF elements like non-embedded fonts or unsupported transparency cannot be preserved at your chosen conformance level. Enabling Allow Downgrade lets the converter automatically fall back to a compatible lower level, ensuring conversion always succeeds.
Usually not. PDF/A conversion preserves the visual appearance, text, images, and layout of your document. Some non-archival features such as JavaScript, encryption, audio, or video content may be removed to meet PDF/A compliance requirements.
Yes. PDF/A is the internationally recognized ISO standard for long-term document preservation. Government agencies, legal firms, healthcare providers, libraries, and businesses use PDF/A to ensure documents remain readable and accessible for many years.
Yes. AziPDF works on Android phones, iPhones, tablets, and desktop browsers. Convert PDF files to PDF/A directly from your mobile browser without installing any software.