No more font or formatting problems after edits
Type into the fields, tick the boxes, pick from the lists. The values go into the form itself.
A membership form filled in: name, email, country and a tick.

Open the PDF and press Fill form on the left. The fields of the form are marked on the page.

Click a field and type; the value goes in when you leave the field. Tick boxes with a click, pick from lists as usual.

Press Download. The form opens filled in, in any PDF reader.

A PDF form has fields with names and places. Typing on top of the page leaves the fields empty — the next program that opens the form sees nothing. Seamtype writes the values into the fields themselves.

Text, check boxes, radio buttons and lists keep their values in the form, where other programs read them.
The fields stay fields: whoever receives the PDF can still read and change the values.
Each value is shown the way the form says it should be: its font, size and alignment.
Every field you change is one entry in the list of edits.
Values in the fields, not text over them.
Tick, choose, pick a country — all kinds of fields.
Add your signature on the same page.
Fields are big enough to tap.
Step back through the list of edits.
Write on them with Add text.
If the page says “This page has no form fields”, the form is flat — fill it in with Add text.
Fields the form's author locked are left as they are.
Yes: press Download. The values are in the form's fields, so any reader shows them.
Yes, the fields stay fields. If the form must not change, print it to PDF in your reader after filling it in.
Use Add text: click on the line and type, and the text takes the style of the form.