Free Fill PDF Form Tool
Something not working? Report a problem
About the Fill PDF Form
Fill in a fillable PDF form's text fields, checkboxes and dropdowns, then lock in the answers, all in your browser with no upload.
How to use the Fill PDF Form
- 1Add a fillable PDF form — drop it in or click to browse.
- 2Fill in each field — text, checkboxes and dropdowns are all detected automatically.
- 3Click Download filled PDF.
Frequently asked questions
Is this fill PDF form tool free?
Yes — completely free with no sign-up and no watermark on the result.
Is my PDF uploaded anywhere?
No. The form is read and filled entirely in your browser — the file never leaves your device.
What does "lock the answers" do?
It flattens the form after filling, turning your answers into regular page content. Every viewer then sees exactly what you typed, and the fields can no longer be edited. Turn it off if you want to keep the form fillable.
What if my PDF has no fillable fields?
Then it isn't an interactive form — often a scan or a flattened document. There's nothing to detect, so nothing to fill. You could add text manually with the Edit PDF tool instead.
Does this support checkboxes and dropdowns?
Yes — text fields, checkboxes, dropdowns, radio groups and option lists are all detected and rendered as the right kind of input.