Fill PDF Form
This tool opens a PDF that already contains interactive form fields (an AcroForm
This tool opens a PDF that already contains interactive form fields (an AcroForm
How to use Fill PDF Form
- Choose a fillable PDF form from your device.
- Type into the text fields and set any checkboxes, dropdowns, or options.
- Optionally flatten it, then click Fill and download your completed PDF.
About Fill PDF Form
This tool opens a PDF that already contains interactive form fields (an AcroForm) and lets you fill it in without any desktop software. It reads every text box, checkbox, radio button, dropdown, and list in the file, shows you an editable field for each one, and writes your answers back into a new PDF you can download.
Because it reads real form fields, it works best with PDFs built to be fillable — tax forms, job applications, government paperwork, invoices, and templates. If a PDF is a flat scan or a print-only layout with no interactive fields, there is nothing to type into, and the tool will tell you so rather than guess where text should go. Field names are pulled directly from the PDF, so they sometimes look technical; fill in what you recognize and leave the rest blank.
Everything runs locally in your browser using pdf-lib. Your document is never uploaded, so nothing leaves your device. You can also choose to flatten the form, which bakes your answers permanently into the page so the values can no longer be edited — handy for sending a finished copy.
Frequently asked questions
- What kind of PDF do I need?
- A fillable PDF — one with interactive form fields (an AcroForm). Most official forms, applications, and templates are built this way. If your PDF is a plain scan or a print-only design with no fields, the tool will report that there is nothing to fill.
- Is my document uploaded anywhere?
- No. The PDF is read and filled entirely in your browser using JavaScript. It is never sent to a server, so your information stays on your device.
- What does the Flatten option do?
- Flattening merges your filled-in values into the page itself, so the fields become fixed text that can no longer be changed. Use it when you want to send a final, locked copy. Leave it off if the recipient may still need to edit the form.
- Why do the field labels look strange?
- The labels are the internal field names stored inside the PDF by whoever created it. They can be short codes rather than plain English. Match them to the visible form as best you can; the values still land in the right boxes when you download.
- Can it fill a scanned or non-interactive PDF?
- No. It only fills existing interactive form fields. It cannot place free-floating text on a flat page. For scanned forms, you would need a tool that renders the page for click-to-type placement, which this one does not do.
- Which field types are supported?
- Text boxes (single and multi-line), checkboxes, radio button groups, dropdowns, and scrollable option lists. Buttons and signature fields are left unchanged.