PDF Form Filler

Upload a PDF with form fields. Fill them directly in the viewer below, then click the button to save and download the filled form. Also supports XFA forms.

Note on XFA Forms: XFA (XML Forms Architecture) is a legacy format that's only supported by certain PDF viewers like pdfup and Firefox. If you open an XFA PDF in other software and see blank pages or no form fields, it means that viewer doesn't support XFA. To view and fill XFA forms properly, use Firefox or pdfup's Form Filler.

Click to select a file or drag and drop

PDF file with form fields

Your files never leave your device.

What is PDF Form Filler?

PDF Form Filler is a browser-based tool that allows you to fill out interactive PDF forms directly in your web browser. Unlike traditional methods that require downloading software or uploading files to servers, our tool works entirely locally on your device.

Key Features:

Dual Format Support: Works with both AcroForms (standard PDF forms) and XFA forms (legacy XML-based forms)
Complete Privacy: Your files never leave your computer - all processing happens locally
No Installation: Works directly in your browser with no software to download
Cross-Platform: Compatible with Windows, Mac, Linux, and mobile devices
Free Forever: No charges, no subscriptions, no watermarks

Supported Form Types

✓ Text fields
✓ Checkboxes
✓ Radio buttons
✓ Dropdown lists
✓ Signature fields
✓ Date pickers
✓ Calculation fields

How to Fill PDF Forms in 3 Steps

Upload PDF Form

Drag and drop your PDF form or click to select. The form will load directly in your browser.

Fill Form Fields

Click on any form field and start typing. Checkboxes, dropdowns, and other field types are fully supported.

Save & Download

Click "Save & Download" to get your filled form. All data is preserved in the final PDF.

Frequently Asked Questions

These are two different technologies for creating interactive PDF forms:

AcroForms (Standard): Most common type, supported by all modern PDF viewers including Adobe Acrobat, Chrome, Edge, and Safari.
XFA Forms (Legacy): XML-based forms, mainly used in older systems. Only supported by some viewers like Firefox and Adobe Acrobat.
Our Tool: Supports both formats. If your form appears blank in Chrome but works in Firefox, it's likely an XFA form that our tool can handle.

Yes, absolutely. Security is our top priority:

Local Processing: All processing happens in your browser. Files never upload to any server.
No Data Storage: We don't store, view, or access your files or form data.
Privacy Guaranteed: Your sensitive information (tax forms, applications, contracts) remains completely private.
No Internet Required: Once the page loads, you can work offline.

While the tool itself doesn't have a save/resume feature, you can:

Save Partially Filled Forms: Click "Save & Download" at any time to save your progress.
Re-upload Later: Upload the partially filled PDF later to continue where you left off.
Browser Session: Your data remains in the browser until you close the tab (but we recommend saving regularly).

We support all standard PDF form field types:

Text Fields: Single line, multi-line, password fields
Choice Fields: Checkboxes, radio buttons, dropdown lists
Button Fields: Push buttons, reset buttons, submit buttons
Special Fields: Signature fields, date fields, number fields
Calculated Fields: Fields with automatic calculations (if supported by the form)

Yes, the PDF Form Filler works on mobile devices with some considerations:

Full Compatibility: Works on iOS Safari, Android Chrome, and other mobile browsers
Touch-Optimized: Form fields are easily tappable on touch screens
Performance: Larger PDFs may load slower on mobile devices
Recommended: For complex forms with many fields, desktop may provide a better experience

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