Free PDF Form Builder — Create Fillable PDF Forms Online

What is the PDF Form Builder?

A free tool that turns any PDF into a fillable form. Drag text fields, checkboxes, radio buttons, dropdowns and signature boxes onto the page, then export a PDF with real AcroForm fields that anyone can complete in Adobe Acrobat, a browser, or our own editor. Everything runs in your browser — your document is never uploaded to a server.

How to create a fillable PDF form

1. Start from a blank page by picking a size, or upload an existing PDF to add fields on top of it.
2. Add fields from the palette: text, paragraph, date, checkbox, radio group, dropdown, list box and signature.
3. Drag and resize each field, then set its name, default value and options in the properties panel.
4. Download your fillable PDF, or open it straight in the editor to fill it in.

Supported field types

• Text & paragraph: single-line and multi-line inputs.
• Checkbox: for consent or yes/no answers.
• Radio group: pick exactly one option from a set.
• Dropdown & list box: choose from a defined list.
• Date & signature: dedicated slots for dates and signing.

Why use it?

Most online form builders make you upload your document and paywall the export. This one is free, needs no sign-up, and keeps the file on your device — a genuine private way to make a PDF fillable for contracts, applications, surveys, waivers and intake forms.

Frequently asked questions

Is it really free?

Yes — completely free, no account required, and you can build and download unlimited forms.

Does my file stay private?

Yes. The builder runs entirely in your browser; your PDF never leaves your device.

Will the form be fillable in Acrobat?

Yes. We export standard AcroForm fields that work in Adobe Acrobat and most PDF readers.

Can I add fields to an existing PDF?

Yes. Upload any PDF and place fields directly on its pages — the original content is preserved.

Ready? Start building your form — or read the step-by-step guide — or try filling an existing form.