If a PDF already has real fillable form fields — text boxes, checkboxes, dropdowns — Fill PDF Form detects them automatically and lets you type directly into each one, exactly where it sits on the page.
How to fill pdf form
- 1
Upload your PDF form
Drag it onto the upload area, or click to choose it from your device.
- 2
Select Fill PDF Form
Choose the tool — it scans the file and lists every field it found.
- 3
Fill in each field
Type text, check boxes, and choose dropdown values right on the page.
- 4
Download your completed form
Your entries are saved into the file.
Why use RealPDFTool for fill pdf form
Detects existing form fields automatically
No need to click around guessing where fields are — they're listed and highlighted for you.
Your files never leave your browser
Filling runs locally, so your document is never uploaded.
Frequently asked questions about fill pdf form
What if my PDF doesn't have real form fields?
Use Edit & Sign instead — it lets you place new typed text anywhere on the page, including on forms without interactive fields.
Can I lock in my answers afterward?
Yes, run the result through Flatten PDF to bake the values in permanently and disable further editing.
Is there a page limit?
It runs entirely in your browser, so it's bounded by your device's memory rather than a server-side limit.
Are my files uploaded anywhere?
No — filling happens locally, so your document is never uploaded.