Question 1

What kinds of PDF form fields can I fill here?

Accepted Answer

AcroForm text fields, checkboxes, radio buttons, and dropdowns. XFA is not supported.

Question 2

Why does Form Fill say there are no fields?

Accepted Answer

The PDF is a scan, a flat layout, or XFA. This page only fills AcroForm.

Question 3

What is the _filled.pdf download?

Accepted Answer

A new copy with your values. The empty original stays on disk.

Question 4

Can I flatten the form after I fill it?

Accepted Answer

Yes, as an option here, or later on Flatten PDF. Flattened values stop being fields.

Question 5

Is XFA supported?

Accepted Answer

No. Ask the sender for an AcroForm PDF.

Question 6

Can I add a drawn signature in Form Fill?

Accepted Answer

This page fills fields. Place a signature image on Sign, then flatten if the mark must sit still.

Question 7

Does Form Fill upload my answers?

Accepted Answer

No. Filling stays in the browser.

Question 8

Will flattening the filled form keep selectable body text?

Accepted Answer

Yes on Flatten. Grayscale is the tool that kills selectable text.

Question 9

Can I fill a password-protected form?

Accepted Answer

Unlock it first if it will not open.

Question 10

Do calculations in the form still run?

Accepted Answer

Simple stored values save. Do not expect every desktop Acrobat calculation to fire in the browser.

Question 11

Can I save a partly filled form and finish later?

Accepted Answer

Download _filled.pdf without flattening, then open that copy later. Keep the empty original too.

Fill a PDF Form - AcroForm Fields, Optional Flatten