FastHan / PDF Tools / PDF to PDF/A Online Free
PDF TO PDF/A
PDF to PDF/A Online Free
Prepare a PDF for long-term archiving — metadata, colour profile, font check.
100% private — processed in your browser
Your files are processed locally in your browser with JavaScript. They are never uploaded to a server. You can verify this yourself: open your browser DevTools, go to the Network tab, and watch — no file data leaves your device.
How to prepare a PDF for PDF/A archiving
PDF/A is the flavour of PDF meant for archiving: a file that will still open and look the same in fifty years. It requires embedded fonts (so the text never depends on fonts installed on the reader's computer), a declared colour profile, and standardised metadata. Servers do this conversion properly; a browser tool cannot do all of it, and this page says so plainly instead of pretending otherwise.
What this tool does: it re-saves your PDF with a clean structure, writes proper XMP metadata (title, author, dates), adds an sRGB colour profile (OutputIntent), and then checks every font in the file and tells you which ones are embedded and which are not. Fonts that were not embedded in the original stay unembedded — no browser tool can embed a font it does not have — so if the report shows unembedded fonts, full PDF/A compliance is not guaranteed.
That is why the result is called "prepared for PDF/A", not "certified PDF/A". For a certified file, verify the result with a validator such as veraPDF. For most personal archiving — a contract, a certificate, a report you want to keep readable for decades — the prepared file with all fonts embedded is already a large step up from an ordinary PDF.
Everything runs in your browser, so the PDF never leaves your device. There is no daily limit.
How to use this tool
- 1Drop a PDF onto the page.
- 2Optionally type a document title and author for the metadata.
- 3Press Prepare for PDF/A and download the result — then read the font report.
Frequently asked questions
Is the result a certified PDF/A file?
No — and this tool does not claim it is. It prepares the file: clean structure, XMP metadata, sRGB colour profile, and a font report. Fonts that were not embedded in the original cannot be embedded by any browser tool. Verify with veraPDF if you need a certified file.
What does the font report mean?
It lists every font the PDF uses and whether it is embedded. Embedded fonts travel inside the file, so the text looks the same on any computer. A font that is not embedded depends on the reader having that font installed.
What happens to my original file?
Nothing. The original stays untouched on your computer; you download a new, prepared copy.
Are my files uploaded anywhere?
No. Preparation runs entirely in your browser. Your PDF never leaves your device.