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PDF Forms

Form Builder

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Create PDF Forms
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Max 100MB Secure & Private
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How to create PDF forms

1

Upload your PDF

Upload the PDF you want to add interactive form fields to.

2

Add fields

Place text fields, checkboxes, dropdowns, signature and other field types on the document.

3

Export the form

Save and download the PDF with all fillable fields ready to distribute.

✓

Continue with Workflow

Select a workflow to continue

Workflow Current Step: 1

Fill and Create PDF Forms Online for Free

Fill existing PDF forms or create new interactive forms with text fields, checkboxes, dropdowns, and signatures. Auto-detect form fields, export form data, and save completed forms instantly. No software installation required.

PDF Forms Features

Auto-Detect Form Fields

Upload any PDF and existing form fields are automatically detected and ready to fill. AI detection available for complex forms.

Create Custom Forms

Add text fields, checkboxes, radio buttons, dropdowns, date pickers, and signature fields to any PDF.

Digital Signature Fields

Include signature fields in your forms so recipients can sign documents directly within the PDF.

Export Form Data

Export filled form data separately or save the completed PDF with all information embedded.

Fill Mode

Switch to Fill Mode to quickly complete existing PDF forms. Click fields to enter data and download the filled document.

Field Properties Panel

Configure detailed properties for each field including name, placeholder, default value, required status, and dimensions.

When to Use PDF Forms?

How to Fill PDF Forms Online

  1. Upload your PDF form — existing fields are auto-detected
  2. Click on fields to fill in your information, check boxes, or select options
  3. Download the completed form or export the form data

How Do PDF Forms Work?

Our PDF forms tool offers two primary workflows. In Fill Mode, you upload an existing PDF form, and the tool automatically detects interactive fields like text inputs, checkboxes, and dropdowns. Simply click on each field to enter your information, then download the completed document. In Create Mode, you start with any PDF and add form fields using the visual toolbar. Drag text fields, checkboxes, radio buttons, dropdowns, date fields, and signature areas onto your document. Configure each field's properties including name, placeholder text, default values, and whether it is required. The AI detection feature can analyze your PDF and automatically suggest where form fields should be placed based on the document layout. Once your form is complete, save it as an interactive PDF that anyone can fill using any standard PDF reader. You can also export the collected data separately for use in spreadsheets or databases.

Form data often contains sensitive personal information. That is why our PDF forms tool processes everything directly in your browser. Your data never leaves your device, no information is sent to our servers, and no third party can access your filled forms. This client-side architecture provides the strongest possible privacy protection.

Pro Tip: Use AI Detection for Complex Forms

For PDF forms with many fields (like tax forms or lengthy applications), try the AI Detect button. It analyzes the document layout and automatically creates form fields where they belong, saving you from manually placing dozens of fields.

Frequently Asked Questions

Can I fill forms that don't have editable fields?

Yes. You can add text, checkboxes, and other fields to any PDF, even if it wasn't originally created as a form.

Is form data saved securely?

All processing happens in your browser. Your data is not uploaded to our servers and remains completely private.

What field types are supported?

Text fields, checkboxes, radio buttons, dropdowns, date fields, number fields, text areas, and signature fields.

How does AI form field detection work?

Our AI analyzes the visual layout of your PDF to identify areas that look like form fields, such as blank lines, boxes, and labeled areas. It then creates the appropriate interactive fields automatically, saving you time on complex forms.

Can I fill PDF forms on my phone or tablet?

Yes. The form filler works on all devices with a modern browser. The responsive interface adapts to your screen, making it easy to fill forms on mobile devices.

Is my form data private and secure?

All form processing happens in your browser. Your data is never uploaded to our servers and remains entirely on your device. This ensures complete privacy for sensitive information like personal details, financial data, and signatures.

Can I create a fillable PDF from a scanned document?

Yes. Upload a scanned PDF and use either manual field placement or AI detection to add interactive form fields on top of the scanned image. Recipients can then fill the form digitally.

What PDF readers can open forms created with this tool?

Forms created with PDF Ninja use standard PDF form specifications and work in all major PDF readers including Adobe Acrobat Reader, web browsers, Preview on Mac, and mobile PDF apps.

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