- 1Choose file
- 2Adjust
- 3Download
PDF to PDF/A-3b online, free
Convert to archival PDF/A-1b, 2b or 3b, or validate an existing file with detailed ISO compliance findings.
- Runs in your browser — no upload
- Free, no sign-up, no watermark
Set up on this page
- Level: 3b
How to use PDF/A Converter & Validator · PDF/A Converter & Validator — frequently asked questions
How to use PDF to PDF/A-3b
- 1
Add your file
Drop a file on the page or click Select Files.
- 2
Check the preset
Level is set to 3b. You can change it before running.
- 3
Run the tool
Press start. Processing happens on your device.
- 4
Save the result
The result is delivered as PDF, JSON.
What PDF/A Converter & Validator can do
- Operation: convert and validate and validate only
- Level: 1b, 2b and 3b
- Private by design — files are processed in your browser and never uploaded
- Free with no sign-up, no watermark and no daily limit
PDF/A Converter & Validator — frequently asked questions
What does this page set for PDF to PDF/A-3b?
Level: 3b. All of these stay editable.
Is my file uploaded?
No. On the web this tool runs in your browser, so your file is not uploaded.
Are there limits?
It takes one input per run. Server jobs accept up to 2 GB. A job can run for up to 300 seconds. In the browser, the practical limit is your device's memory.
Is the PDF/A converter and validator really free?
Yes. Conversion and validation are free on Sada Files, with no watermark or premium-only controls.
Can I validate a PDF without converting it?
Yes. Choose **Validate only** to inspect the existing file against PDF/A-1b, PDF/A-2b or PDF/A-3b. The downloadable JSON report includes the verdict, declared conformance, violations, unsupported checks, output-intent details and rule-level findings.
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