Question 1

What is a fillable PDF form?

Accepted Answer

A fillable PDF uses AcroForm fields — text boxes, checkboxes, radio buttons, dropdowns, and signatures — that users can complete directly in any PDF reader. Our tool detects these fields automatically and lets you fill them in your browser.

Question 2

Is my PDF uploaded to a server?

Accepted Answer

No. Your PDF never leaves your device. The form fields are parsed and filled entirely in your browser using pdf-lib, with no uploads and no tracking of file contents.

Question 3

Can I flatten the form after filling?

Accepted Answer

Yes. You can optionally flatten the PDF on export, which converts your filled fields into permanent, non-editable text baked into the page — useful for signing contracts or submitting applications.

Question 4

What field types are supported?

Accepted Answer

Text fields, checkboxes, radio buttons, dropdowns, and signature fields. Our tool automatically detects all AcroForm fields on every page and presents them in an editable form.

Question 5

What if my PDF has no form fields?

Accepted Answer

If the PDF doesn't contain AcroForm fields, our tool will let you know. For that case, try our PDF Signer or PDF Annotator to add text, signatures, and checkmarks anywhere on the page.

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