“Things should be as simple as possible, but no simpler.” —Albert Einstein
Constructing a fillable form with Fillably is easy. You start with a “flat” PDF image of your form; it looks like a form but can’t be filled in. Using Fillably, you lay out fields over the PDF image. When you save it, the fields are “baked into” the PDF and it becomes fillable. Then any user can open it in Preview, fill it in, and save it. See the Fly-Through for a full explanation of how Fillably works.