A PDF form filler lets you type values directly into interactive form fields embedded in a PDF — text boxes, checkboxes, dropdown menus, and radio buttons — without needing Adobe Acrobat. Fill the fields, then download the completed form or flatten it so values become permanent.
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Supports fillable PDFs with AcroForm fields
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Form Fields
Fill & Download keeps fields editable. Fill & Flatten locks values permanently.
How to Fill a PDF Form Online
Fillable PDFs use a standard called AcroForm to embed interactive fields — text boxes, checkboxes, dropdowns, and radio buttons — directly inside the document. This PDF form filler reads those fields from your file and lets you type values into them, all inside your browser without any software to install or files to upload.
Step 1: Upload Your PDF
Click "Browse File" or drag your PDF onto the drop zone. The tool immediately scans the file for embedded AcroForm fields and lists them in the right panel. It also shows the total field count next to the filename. If no fields are detected, the tool tells you the PDF likely does not have interactive form elements.
Step 2: Fill In the Fields
Each detected field appears with its field name as a label. Text fields show as input boxes, checkboxes as checkboxes, dropdowns as select menus, and radio buttons as radio groups. Fill in each field you want to complete — you can leave fields blank if they are optional. Use the page navigation to preview different pages of the document.
Step 3: Download Your Filled PDF
Choose between two download options. Fill & Download saves a PDF where the fields remain interactive — recipients can still edit values after you share it. Fill & Flatten converts all field values into static document content, removing the interactivity so the values are permanently embedded and cannot be changed. Use Flatten when sending a completed form you do not want modified.
Common Use Cases
This tool is ideal for filling in government forms, job applications, tax forms, rental agreements, and any other standard PDF form. If your PDF is a scanned paper document rather than a digital form, it will not have embedded fields — use PDF OCR to extract text from scanned PDFs instead.
FAQ
Is this PDF form filler free?
Yes — 100% free with no account or signup required. All processing happens in your browser. Nothing is sent to any server.
Is my PDF data private?
Completely private. Your file never leaves your device. All form detection and filling is done locally using JavaScript libraries running in your browser.
What types of form fields does this tool support?
The tool detects and fills text fields, checkboxes, dropdown menus, and radio button groups. These cover the vast majority of interactive PDF form fields created with Adobe Acrobat, LibreOffice, or other PDF form tools.
What is the difference between Fill & Download and Fill & Flatten?
Fill & Download keeps the form fields interactive — recipients can still edit the values after you share the PDF. Fill & Flatten converts all form fields into static text, locking in the values so they appear as permanent content and cannot be changed.
My PDF has form fields but the tool shows none — why?
Some PDFs have form-like visuals but no actual interactive form fields embedded in them. These are often scanned documents or PDFs where the form appearance was drawn but not created as proper AcroForm fields. Try using PDF OCR for scanned documents.
Can I fill a PDF that requires a signature?
Signature fields will appear in the fields list as text fields. You can type a name into them, but this does not create a legally binding cryptographic signature. Use the PDF Sign tool for proper digital signature support.
Does this work on password-protected PDFs?
Not directly. If your PDF requires a password to open, you'll need to remove the password first using the PDF Unlock tool before filling the form.