Best Free PDF Form Filler Offline Desktop (2026)

Filling out PDF forms shouldn’t require an internet connection or a paid subscription. Whether you’re completing tax forms, job applications, or business contracts, you can fill, sign, and save PDF forms entirely offline with free desktop tools.

Types of PDF Forms

• Interactive (fillable) forms — contain text fields, checkboxes, radio buttons, and dropdown menus. These are designed to be filled in digitally.
• Non-interactive (flat) forms — regular PDFs with blank spaces meant to be printed and filled by hand. You need a PDF editor with a text tool to fill these digitally.

About 60% of PDF forms are interactive. The other 40% require you to add text annotations to fill them in.

Top 5 Free Offline PDF Form Fillers

#1 Pick: PDFgear — Best Form Filler with Auto-Complete

PDFgear excels at form filling with features that speed up repetitive work.

Filling interactive forms:

1. Open the PDF form in PDFgear
2. Click on any form field — text fields, checkboxes, and dropdowns are all interactive
3. Type your responses directly into the fields
4. Press Tab to move to the next field
5. Save the completed form

Auto-complete feature:

PDFgear remembers form data you’ve entered before. When you start typing in a field, it suggests previous entries — perfect for filling multiple forms with the same personal information (name, address, phone number).

Filling flat (non-interactive) forms:

1. Open the PDF in PDFgear
2. Click “Edit” → “Add Text”
3. Click where you want to add text
4. Type your response and adjust font size to match the form
5. Position the text carefully over the blank space
6. Repeat for each field

For signing forms, see our Best Offline PDF Signature Software guide.

#2 Pick: LibreOffice Draw — Open Source Form Filler

LibreOffice Draw can open and fill both interactive and flat PDF forms. It’s particularly good at handling complex forms with many fields.

Filling interactive forms:

1. Open the PDF in LibreOffice Draw
2. Click on form fields to fill them in
3. Use Tab to navigate between fields
4. Export as PDF when complete

Note: LibreOffice may not perfectly preserve the form’s visual layout. Always check the exported PDF to ensure formatting is correct before submitting.

#3 Pick: Preview (Mac) — Built-in Form Filling

macOS Preview can fill interactive PDF forms without any additional software.

How to:

1. Open the PDF form in Preview
2. Click on form fields to fill them in
3. Text fields, checkboxes, and radio buttons all work
4. Add a signature using the Signature tool
5. Save the completed form

Preview also lets you add text annotations for flat forms using the Text tool in the markup toolbar.

Common PDF Form Issues and Solutions

“This form cannot be filled in”

Some PDFs have form filling disabled in their security settings. You can check this using our Check PDF Security guide. If form filling is restricted, you’ll need to remove the restrictions first (see our PDF Password Remover guide).

Form data disappears after saving

Some PDF viewers don’t save form data in the original file. To preserve form entries:

1. Use PDFgear to fill and save forms (it preserves all form data)
2. If using another tool, try “Save As” instead of “Save”
3. Print to PDF as a workaround (this flattens form data into the document)

Form fields are misaligned

If form fields don’t line up with their labels, the PDF may have been created with a different form designer. Try opening it in PDFgear, which handles most form layouts correctly.

Frequently Asked Questions

Can I fill out a PDF form without Adobe Acrobat?

Yes. PDFgear, LibreOffice Draw, PDF24 Creator, and Okular all fill PDF forms for free. On Mac, Preview handles form filling natively. None of these require an internet connection.

How do I save a filled PDF form?

Open the form in PDFgear, fill in the fields, and save the file. The form data is embedded in the PDF. If form data isn’t saving in your current viewer, switch to PDFgear and use “Save As” to create a new file.

Can I fill out a PDF form on my phone?

This guide focuses on desktop tools. For mobile form filling, most phone PDF viewers (Google Drive, Apple Files) support basic form filling. For advanced features, dedicated PDF apps work best.

Why can’t I type in a PDF form field?

The form may have filling restrictions (check with our PDF Security Checker), the form may not have interactive fields (it’s a flat form — use the Add Text tool in PDFgear), or the PDF viewer may not support form filling (switch to PDFgear).

Can I create my own fillable PDF form?

Yes, but form creation is beyond what free tools do well. LibreOffice Writer can create PDF forms with interactive fields. For professional form creation, dedicated tools like Adobe Acrobat are recommended.

How do I submit a filled PDF form via email?

After filling and saving the form in PDFgear, attach the PDF to an email as you would any other file. If the form has a “Submit” button, clicking it may open your email client automatically (if configured).