Open FillSign — free

How to fill out a PDF form for free — no Acrobat needed

You don't need Adobe Acrobat or a paid subscription to fill out a PDF. This guide shows you how to do it in your browser in under a minute, on any computer or phone, completely free.

No Acrobat No signup Works on any PDF
Open FillSign — it's free

Why you don't need Acrobat to fill a PDF

Adobe Acrobat is powerful, but the version that lets you edit and fill PDFs is a paid subscription, and it has to be installed. Most online fillers, meanwhile, upload your document to their servers and then ask you to pay before you can download it. For simply filling out a form, both are overkill. FillSign runs entirely in your web browser, so there's nothing to install, no account to create, and your file never leaves your device.

Step-by-step: fill out a PDF form for free

1
Open FillSign Go to fillsign.app in any modern browser — Chrome, Safari, Edge, or Firefox, on desktop or mobile. There's nothing to download.
2
Drop your PDF in Drag your PDF onto the page, or click the drop zone to choose a file. The form opens right in the browser and stays on your computer the whole time.
3
Click to add text With the Text tool selected, click anywhere on the form and start typing. Use the A− and A+ buttons to shrink or grow the text so it lines up with the blanks. Drag any text box to reposition it perfectly.
4
Tick the checkboxes Switch to the Check tool and click on any checkbox or "yes/no" field to drop in a checkmark. Resize and move it just like text.
5
Add your signature (if needed) Click the Sign tool, draw your signature with your mouse or finger, then click where it should go and drag the corner to resize. See our full signing guide for details.
6
Download the finished PDF Click Download PDF. Your filled, signed form saves to your device instantly — no watermark, no paywall, no email required.
Open FillSign — it's free

Troubleshooting

My PDF is a scan, not a fillable form

That's fine. FillSign lets you type on top of the page, so it works on scanned documents and printed forms saved as PDF just as well as on forms with built-in fields. Just click where the blank line is and type.

The form has interactive fields that won't accept my text

Some PDFs ship with their own interactive form fields. FillSign places your text as a layer on top of the page rather than into those fields, so it always works visually. When you download, your typed text is baked into the page and looks identical when printed or viewed anywhere.

The form is "flattened" or locked

A flattened PDF has no editable fields at all — it's essentially a picture of a form. Because FillSign overlays text on the page instead of relying on fields, flattened forms are no problem. The only thing FillSign can't do is open password-protected PDFs that require a password just to view; remove the view password first, then open it.

My text doesn't line up with the blanks

Use the A− / A+ buttons to match the form's text size, then click and drag the text box to nudge it into place. A little fine-tuning gets a clean, professional result.

Privacy note: everything happens in your browser. Your document is never uploaded, which makes this approach safe for tax forms, leases, medical paperwork, and contracts. Turn off your internet after the page loads and it still works — proof that nothing is being sent anywhere.

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