Fill a PDF Form
Read a fillable PDF's own fields, fill in your name, tax code and address from your profile, add your saved signature, and lock the answers into the page.
What it does
Fill a PDF Form changes which pages a PDF contains, or how they sit, and leaves everything else alone. The page content is copied rather than re-encoded, so nothing is recompressed and no quality is lost between the file you drop in and the one you download.
When you need it
Typically when a document carries pages that should not be shared — an internal cover sheet, a duplicated scan, an appendix meant for someone else — or when a scanner produced pages sideways or out of order.
Limits and caveats
Your original file is never modified: you always download a new copy. Encrypted PDFs have to be unlocked before they can be edited, and a scan is still a scan afterwards — the pages move, the text inside them stays an image. Everything happens in your browser, so the file never leaves your device.
How to fill a pdf form
- Drop a fillable PDF.
- Its fields appear as ordinary inputs. Type your answers.
- Lock them in, and download.
Everything happens on this device: no file is uploaded and nothing leaves the browser.
Frequently asked questions
- What does locking do?
- It bakes your answers into the page so nobody can change them afterwards. Leave it off while a form is still a draft; turn it on before you send it back.
- My PDF has no fields.
- Then it was made to be printed, not filled. Sign a PDF lets you write on it, and Redact a PDF lets you cover parts of it.
- How does it know which box is my tax code?
- From the names the office gave its fields, like “cognome” or “cod_fiscale”. With a My KIVO profile, “Use my details” fills them; every recognised field is marked and every value can be changed.
- Do my files get uploaded?
- No. This tool runs entirely in your browser, so the file never leaves your device.