PDF Forms Filler & Flattener Online Free
Inspect, fill out, and flatten interactive PDF forms (text fields, checkboxes, dropdowns) right in your browser. 100% private client-side processing in your browser with zero server uploads.
Click to select file or drag & drop here
Supported formats: application/pdf • Processed 100% locally in your browser
How to Use PDF Forms Filler & Flattener Online
Upload Fillable PDF Form
Select any tax form, application, or contract PDF containing interactive form fields.
Fill Fields or Enable Flatten
Edit every detected text field and checkbox, and optionally toggle "Flatten Form" to lock values.
Download Completed PDF
Save your filled (or flattened) PDF document immediately.
Frequently Asked Questions — PDF Forms Filler & Flattener
What does "Flatten PDF Form" mean?
Flattening converts interactive text boxes and checkboxes into permanent static page graphics so recipients cannot alter your answers.
What if my PDF has no interactive AcroForm fields?
You can still flatten the PDF structure or add custom text fields onto any page.
Are tax or application forms kept private?
Yes, 100% client-side in your browser.