100% In-Browser & Private

PDF Form Filler

Fill out interactive PDF forms directly online and download the completed document.

Drop an interactive PDF form or tax document here

Quick Guide

How to use PDF Forms in 3 easy steps

No software installation required. 100% free and runs smoothly on mobile, tablet, or desktop.

Select any standard AcroForm or questionnaire.

Type your data into text inputs and toggle checkboxes.

Download your filled PDF document with or without flattening.

Your files stay on your machine. Client-side tools do not send your files to our servers.

Zero Server Upload

Everything you need to know about PDF Forms on HoudiniPDF.

What does "Flatten form fields" mean?

Flattening bakes your typed data permanently into the document text so no one can edit or change your answers.

Can I fill tax forms and government documents?

Yes! AcroForms used by official agencies are fully supported.

Are my private entries saved on your servers?

No. All field values are entered and compiled in your local web browser.

Can I add a signature to the form?

Yes! After filling the form, you can pass it through our "Sign PDF" tool to add your signature.

Is this tool free?

Yes, 100% free with unlimited form filling.

Add text, shapes, freehand drawing, and images directly onto PDF pages.

Stamp custom text or image watermarks across your PDF with full opacity control.

Draw or type your signature and place it securely onto any PDF document.

Encrypt your PDF with strong AES-256 password protection to prevent unauthorized access.