PDF/A is the ISO format for documents that must remain readable for decades: invoices, contracts, submissions to courts and administrations. Helpdf adds the color profile and metadata required by PDF/A-2b. If some fonts are not embedded, pages are rebuilt as images so the file stays compliant.
How to convert PDF to PDF/A
Select your file
Click the button or drag and drop your file into the box.
Choose your options
Adjust the settings if needed — the defaults work for most files.
Download the result
Your new file is created instantly in your browser. Click Download.
Frequently asked questions
Which PDF/A level is produced?
PDF/A-2b, the most widely accepted level for archiving and administrative submissions.
Are my files safe?
Yes. With Helpdf, your files stay on your device. They are never sent to our servers, nobody else can see them and nothing is stored.
Is Helpdf free?
Yes, every tool is completely free with no sign-up and no watermark. The site is funded by advertising.
Does it work on phone?
Yes. Helpdf works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux. Very large files may be slower on older phones.