PDF to PDF/A Converter
Convert PDF documents to the standard ISO PDF/A format for long-term preservation.
Drag & drop PDF files here or click to browse
Supports multiple files up to 50MB each
Selected Files
Select Conversion Mode
Standard PDF/A-1b (Preserves Text)
Best for standard files. Injects metadata and output intents. Text remains searchable and selectable.
Image-based PDF/A (Guaranteed 100% Compliance)
Renders each page to high-res image before packaging. Resolves font embedding, transparency, and structure issues. Text is non-selectable (ideal for scans or non-Latin scripts).
Processing
Converted PDF/A Documents
Free Online PDF to PDF/A Converter – Long-term Archival Format
Transform your documents into the standard ISO-compliant PDF/A format designed specifically for digital archiving. By ensuring color spaces are device-independent and embedding all metadata and output intents, your files are guaranteed to open exactly the same way decades from now.
How to Convert PDF to PDF/A
1. Upload PDF files via drag and drop or clicking the browse zone.
2. Choose between Standard Mode (retains searchable text) or Image-based Mode (maximum compliance).
3. Enter the document password if any file is encrypted.
4. Click Convert, watch the processing finish, and instantly download your archive-ready PDF.
Frequently Asked Questions
What is PDF/A?
PDF/A is an ISO-standardized version of the Portable Document Format (PDF) specialized for use in the archiving and long-term preservation of digital documents. It differs from standard PDF by prohibiting features unsuited for long-term archiving, such as font linking, external contents, and JavaScript.
Is my document secure?
Absolutely. This tool runs 100% client-side in your browser using pdf-lib and PDF.js. Your document bytes never leave your computer or touch any server. It is completely safe for sensitive, financial, and legal documents.
Which mode should I choose?
Standard Mode is perfect for text-heavy documents where text searchability and selection are crucial. Image-based Mode is recommended for scanned documents, forms with non-embedded fonts, complex vector elements, or non-Latin scripts to guarantee 100% strict PDF/A validation compliance.