PDF to PDF/A Converter
Prepare a new, image-based PDF/A-2b candidate for long-term document preservation.
Drag and drop a PDF here, or browse your device.
One PDF · Recommended maximum size: 100 MBYour PDF is processed in your browser. The file is not uploaded to the Nawssai website by this tool. External JavaScript libraries are loaded from public CDNs.
PDF to PDF/A Conversion: A Practical Guide to Long-Term Document Preservation
Learn what PDF/A means, how this converter prepares an archival copy, and what to check before storing important documents.
What Is the PDF/A Format?
PDF/A is a family of PDF standards designed for the long-term preservation of electronic documents. It is based on PDF but introduces requirements intended to make a document more self-contained and predictable when it is opened in the future. Depending on the selected conformance level, requirements can cover items such as fonts, color information, metadata, encryption and external dependencies.
PDF/A is commonly considered for records, reports, invoices, research material, administrative documents and other files that may need to remain readable for many years. It is not simply a smaller PDF or a PDF with a different file extension. A file must satisfy the technical requirements of a particular PDF/A part and conformance level.
What Does This PDF to PDF/A Tool Do?
This browser-based tool prepares an image-based PDF/A-2b candidate. It uses a PDF rendering engine to display each selected source page, then creates a new PDF containing a full-page image for every page. The new document includes an sRGB ICC output intent and PDF/A identification metadata for the PDF/A-2b target. The output is designed around visual preservation rather than editable content.
Rasterizing pages is a deliberate trade-off. It avoids carrying forward many interactive or unsupported structures from the original document, but it also means that the text is no longer a real text layer. A recipient can view and print the pages, but cannot select words, search within the document or copy paragraphs unless OCR is applied separately.
How to Convert a PDF to a PDF/A-2b Candidate
- Select a PDF: Choose a local PDF file or drag it into the upload area. The tool reads the document in your browser.
- Check the preview: Confirm that the first page is displayed and review the detected page count.
- Choose pages: Leave the page-range field empty to process the complete document. To select a subset, enter a range such as
1-3, 5, 8-10. - Choose resolution and encoding: A higher DPI can preserve finer visual detail but usually creates a larger file. PNG is lossless; JPEG can reduce file size but is lossy.
- Convert and download: Start the conversion, watch the progress indicator, and download the generated PDF/A-2b candidate when it is ready.
Frequently Asked Questions
1. What is the difference between PDF and PDF/A?
PDF is a general document format. PDF/A is a standards-based subset intended for long-term preservation, with additional requirements designed to reduce dependence on external resources and unsupported features.
2. Which PDF/A version does this tool target?
This tool targets PDF/A-2b. It does not create PDF/A-1, PDF/A-2a, PDF/A-2u, PDF/A-3 or PDF/A-4 files. The generated file should still be checked with an independent validator.
3. Will my text remain selectable and searchable?
No. This version rasterizes each page into an image. Text selection, text search and copying are not preserved. You can apply OCR to the resulting document with a separate OCR tool if searchable text is required.
4. Does the converter preserve forms, links or digital signatures?
No. Interactive form fields, annotations, hyperlinks, bookmarks, layers, embedded attachments, tags and digital signatures are not carried into the image-based output. A new file is created and any source signature would not remain valid.
5. Which resolution should I choose?
Use 150 DPI for a smaller file, 200 DPI for a practical balance, or 300 DPI when fine print or diagrams need more detail. Very large pages may be downscaled automatically to protect browser memory.
6. Is PNG or JPEG better for archival conversion?
PNG uses lossless compression and is usually preferable when preserving fine text edges is important, although the file may be larger. JPEG can make a smaller file but may introduce compression artifacts.
7. Are my files uploaded to a server?
The conversion code processes the selected PDF locally in the browser. The tool does not send the document to a Nawssai upload server. The PDF.js and PDF-LIB libraries themselves are loaded from public CDNs.
8. Does the downloaded file have guaranteed PDF/A compliance?
No online generator should be treated as a compliance certificate. This tool adds an ICC output intent and PDF/A-2b identification metadata, but the resulting file must be checked with an independent validator such as veraPDF before formal or regulated use.
Understanding Image Resolution and File Size
Resolution determines how many pixels are used to represent each physical inch of a page. Increasing the DPI can improve the appearance of small characters, line art and diagrams, but it also increases memory use and output size. If a source document contains hundreds of pages, a high-resolution conversion can be demanding on a phone or an older computer. Consider splitting a very large job into smaller page ranges.
PNG is a lossless image format and is useful for crisp text and line drawings. JPEG uses lossy compression and can be helpful when download size matters more than preserving every pixel. Keep an unmodified copy of your original PDF regardless of the chosen settings.
Privacy, Limitations and Responsible Use
The selected PDF is read in the browser and is not sent to a Nawssai document-processing server by this page. Nevertheless, you should avoid using a shared or public computer for confidential material, close the browser tab after conversion, and keep the generated file in a secure location. The libraries used by the page are downloaded from public content delivery networks.
Password-protected PDFs may require the correct opening password before they can be rendered. Damaged PDFs, very large files, unusual fonts or unsupported document features may fail to load. This converter is not an OCR service and does not provide legal, archival or records-management advice.
Why Independent PDF/A Validation Matters
A PDF/A identification tag in a document's metadata is not, by itself, proof that the document conforms to the standard. Validation software checks the actual PDF objects against the relevant requirements. For important records, run the downloaded file through an independent PDF/A validator and review its report. You can learn about the veraPDF validation process. If your organization has a records policy, follow its approved profile, retention schedule, storage procedure and validation process.
Final Thoughts
Converting a PDF into an image-based PDF/A-2b candidate can be useful when a consistent visual copy is more important than retaining editable text or interactive features. Choose a suitable resolution, keep the original document, and validate the result independently before relying on it for long-term, legal or regulated archiving.