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Fill out a PDF form on your Mac. Free, and it all works.

Open the form, click a field and type. Checkboxes, dropdowns and dates work, totals add themselves up, and the government XFA forms that Preview can’t open fill in too. Sign it and save. No account, no watermark, and nothing is uploaded.

Free, with no account · Nothing uploaded · Apple silicon, macOS 13 or later

How to do it in Fyllyo

  1. Open the PDF form

    Drop it on Fyllyo’s Home screen, or choose Open.

  2. Click a field and type

    Press Tab to jump to the next field. Tick checkboxes and pick from dropdowns as you go.

  3. Sign it

    Choose Insert, then Signatures, and click where your signature goes. Or sign with your certificate.

  4. Save

    Save the filled PDF. It opens filled in any PDF app, on any computer.

Why Fyllyo

Forms that do their own maths

Many forms work out totals, dates and formats themselves. In Fyllyo they do it as you type, like in Acrobat. In Preview, they often don’t.

“Please wait…” forms open

Government forms built with XFA show a “Please wait…” page in Preview and in browsers. Fyllyo opens them, so you can fill them in, print them and save them.

Got the documents? Let Fyllyo fill it

Filling the same form for client after client? Add their documents and Fyllyo Paid fills the form for you, on your Mac, with every answer linked to where it came from.

What Preview does to PDF forms, in our test

Questions

How do I fill out a PDF form on a Mac?

Open it in Fyllyo, click the first field and type, and press Tab to move to the next one. Tick the boxes, sign, and save. It’s free, with no account.

Can I fill out a PDF form in Preview?

Yes, for simple forms. Preview often skips the form’s own calculations and formatting, and it can’t open XFA forms, which show “Please wait…”. Fyllyo handles both, for free.

Why can’t I type in my PDF form?

Either the PDF has no form fields, or it’s an XFA form your app can’t show. Fyllyo opens XFA forms. For a PDF with no fields, add your answers as text comments, then print or save it.

Can AI fill out a PDF form for me?

Yes. Fyllyo Paid reads your documents (PDFs, scans, photos, Word files and notes) and fills the form on your Mac. Anything it isn’t sure of is left blank with the reason. It’s $99 once.

Is my form uploaded?

No. Fyllyo fills forms on your Mac, and your files are never sent anywhere.

More you can do with your PDFs

Every PDF tool is free, with no account: reading, filling in, signatures, certificate signing, page tools, combining, splitting, text recognition, passwords, text editing, redaction, smaller PDFs and XFA forms. Optional: Fyllyo Paid, $99 once, fills forms from your documents with AI that runs 100% on your Mac.