PDF Forms reads the existing fillable fields from a PDF you upload and lets you type a value into each one, entirely in your browser using the pdf-lib library — your file is never uploaded to a server. It only fills in an existing form; it doesn't let you create a new form or add fields, checkboxes, radio buttons, or dropdowns to a PDF that doesn't already have them.
Is PDF Forms free to use?
Yes, it's completely free with no signup required.
Can I create a new PDF form or add fields?
No — this tool only fills in fields that already exist in the PDF you upload. It doesn't let you add text boxes, checkboxes, or other fields.
What happens to checkboxes, radio buttons, or dropdowns in the form?
Their names are detected, but this tool only writes values into text fields, so other field types won't be filled in from this page.
Does it work with a PDF that has no form fields?
No — if the PDF has no fillable fields, you'll see "No form fields found in this PDF."