Skip to main content

Fill PDF Forms

Fill out interactive PDF forms online

PrivateNo upload

Supported Form Types:Text fields • Checkboxes • Radio buttons • Dropdown menus

Drop a PDF file here or click to browse

Sign in to use Fill PDF Forms

Your Documents Stay Confidential
  • Files never leave your computer - ideal for sensitive business documents
  • Secure sign-in with Google or email magic link
  • Free tier includes 2 downloads per day

By signing up, you agree to our and

Fill Forms scans a PDF for the interactive fields already built into it - text boxes, checkboxes, radio buttons, list boxes and dropdown menus - and displays them as an editable form overlay in the browser. Type or select a value for each field, then save, and the tool writes those values into the PDF's own field objects so any standard PDF viewer shows them filled in. The field list comes entirely from the document's AcroForm data; a page that only looks like a form, with printed lines and boxes but no real field objects behind them, will show nothing to fill. That gap is the most common surprise.

Worked example

Input
A PDF job-application form with three fields: a text field named "Full Name", a checkbox named "Authorized to work", and a dropdown named "Position" with options Cashier, Stocker, Shift Lead. You type "Jane Ortiz" into Full Name, check the checkbox, and choose "Shift Lead" from Position.
Output
A new PDF where the Full Name field displays "Jane Ortiz", the Authorized to work checkbox shows its checked-state appearance, and the Position field's chosen value is set to "Shift Lead" - all three still exist as live, editable form fields in the saved file.
Why
The tool writes each typed or selected value into that field's value entry (and, for the checkbox, its appearance state) without altering the page content around it or locking the field afterward.

How it works

Detecting existing fields
The tool reads the PDF's AcroForm dictionary and walks each field's widget annotations to work out its type - text, checkbox, radio group, or choice field - along with its current value and, for checkboxes and radios, the set of on/off appearance states defined for that widget. Fields sharing one name across multiple pages are treated as a single field with one shared value.
Writing values back
Saving sets each field's value entry, and for checkboxes and radio buttons also sets the appearance state to match one of the widget's predefined on or off names rather than drawing new artwork. The result is a new PDF where the fields still exist as live, interactive form data - filling does not flatten them into fixed page content.

When to use it

  • completing a fillable form a client or agency sent you - an intake sheet, a W-9, a permit application - without printing, writing on it, and rescanning
  • populating the same fields across several copies of a reusable template, such as a waiver or order form, before sending each one out
  • checking whether a PDF someone sent you actually has working form fields, by opening it here and seeing what shows up to fill

Worth knowing

  • A PDF with drawn lines and boxes that look like a form is not the same as a PDF with form fields; if the underlying page has no AcroForm objects, nothing will appear to fill, and that is a property of the file, not a bug in the tool.
  • XFA forms - the dynamic, Adobe LiveCycle-based form format sometimes used in government and legal PDFs - are a different structure from standard AcroForm fields and are not something this tool fills.
  • Filled fields remain live and editable in the saved PDF; anyone who opens it can change what you typed unless the fields are separately flattened into static page content.

Frequently asked

Why does the form show no fields at all?
Either the PDF was built without real interactive fields - it just looks like a form - or the fields were already flattened by whoever created or last edited it. Open the file in another PDF viewer and check whether its fields are clickable; if they are not there either, the fields genuinely do not exist in the file.
Will the values I type become permanent, uneditable text?
No. Filling a field sets its value but leaves it as a live form field, so it can still be edited or cleared in another PDF program. If you need the entries locked in as fixed page content, you need a separate flattening step; this tool does not do that as part of filling.

References

All PDFb2 tools