Online PDF Editor for Forms and Signatures

Upload any PDF and start editing it in your browser. Add text fields, signature fields, initials, dates, checkboxes, dropdowns, highlights and images — all without installing software or recreating your document from scratch.

No complicated setup. Upload your existing PDF and start in minutes.

Edit PDFs Without Starting Over

FillPen works with the PDF you already have. Upload your document, then drag and drop interactive fields onto the exact places where information needs to be filled in. The original PDF stays intact — the field information is managed separately and overlaid on top.

What You Can Add to a PDF

  • Text fields for names, addresses and free-form input
  • Signature fields for drawn or typed signatures
  • Initials fields for page-level acknowledgement
  • Date fields with automatic or manual entry
  • Checkboxes for yes/no selections
  • Radio buttons for single-choice options
  • Dropdown menus for selecting from a list
  • Highlight fields to draw attention to important sections
  • Image fields for logos, photos or ID uploads

Drag, Drop, Resize and Move

Every field you place on the document can be dragged to the right position, resized to fit the space, and moved again if needed. You have full control over field placement before you send the document to anyone.

AI-Assisted Field Detection

FillPen can scan your PDF and suggest likely locations for names, dates, signatures, initials and other common fields. Review each suggestion, then accept, move, resize or remove it before sending.

Works in Your Browser

No downloads, no plugins and no desktop software. FillPen runs entirely in your web browser. Upload a PDF from your computer, edit it online, and share it when you are ready.

Ready to get started?

Upload your PDF, add fields, and share it in minutes.