Fill PDF forms — free
Open an interactive PDF form, fill in the fields, and download the completed file — optionally flattened. Everything stays in your browser.
Drop a file here, or browse
Processed in your browser — nothing is uploaded.
🔒 100% free · your files never leave your browser
Open an interactive PDF form, fill in the fields — text boxes, checkboxes, radio buttons and dropdowns — and download the completed document. Optionally flatten it so the values become permanent.
Your form is processed entirely in your browser and never uploaded, keeping personal details private. Free and watermark-free.
How to Fill PDF Forms
- Drop your fillable PDF above, or click to browse.
- Fill in the detected form fields.
- Optionally tick “Flatten” to lock in the values.
- Click “Fill Form” and download your completed PDF.
Why use PDFLove Fill PDF Forms?
- Detects interactive fields automatically — text, checkboxes, radios, dropdowns.
- Optionally flatten so the completed form can’t be edited.
- No watermark, no account.
- Private — the form is filled entirely in your browser.
When to use this tool
Filling PDF forms in the browser is ideal for applications, tax and government forms, registration sheets and contracts — especially those containing personal details you don’t want to upload to a third-party server. Flatten the result to send a final, locked copy.
Frequently asked questions
How do I fill out a PDF form online for free?
Upload a PDF that has interactive form fields, complete the fields shown, and click Fill Form to download the filled document — free and private.
My PDF shows no fields — why?
The tool fills interactive (AcroForm) fields. If your PDF is a flat scan or has no form fields, there is nothing to fill — try the Sign PDF tool to add text or a signature instead.
What does “Flatten” do?
Flattening bakes your answers into the page so the form can no longer be edited — useful before sharing a final copy.
Which form fields are supported?
Interactive AcroForm fields: text inputs, checkboxes, radio-button groups, dropdowns and option lists.
Can I edit the values after flattening?
No — flattening makes the values permanent. Keep an unflattened copy if you may need to change answers later.