PDF/A validation, entirely in your browser — nothing is uploaded anywhere.
PDF/A guarantees a file still opens correctly decades from now. 2b (recommended): the modern standard, allows transparency effects. 1b: an older, stricter variant some legacy systems still require. 3b: like 2b, but lets you embed the original source file inside the PDF.
Drop a PDF here, or click to choose a file
Your files never leave your device: processing runs in your browser, or on a local server you run yourself. Free to use as-is. Terms of use.