PDF Tools
Fill and Sign PDF Forms Online
Fill interactive PDF fields or add text, dates, initials, and visual signatures to flat PDFs. Processing stays in your browser.
Upload a PDF to fill and sign
Your document stays in this browser
Frequently asked questions
How do I fill a PDF form online?
Upload an AcroForm PDF, complete the detected fields in the form panel, choose editable or flattened output, and download the result.
Can I add text to a PDF without form fields?
Yes. Select Text, enter the content, and click the preview to place it on the current page.
Can I draw my signature?
Yes. Choose the Signature or Initials tool, open the Draw tab, and draw with a mouse, trackpad, stylus or finger. You can set the pen colour and thickness, and undo or redo the last stroke, then click the page to place the result.
Can I upload a signature image?
Yes. Choose the Signature or Initials tool, open the Upload tab, and select a PNG, JPG, WebP or SVG file up to 5 MB. The image is rasterised to PNG in your browser before placement, and an SVG containing scripts or external references is rejected instead of rendered.
Is a drawn, typed or uploaded signature a digital signature?
No. All three methods place a visual mark, not a certificate-based digital signature, identity check, or audit trail.
Can I add initials and dates?
Yes. Typed initials and today's local date can be placed on any page.
Can I fill checkboxes and radio buttons?
AcroForm checkboxes, radio groups, dropdowns, list boxes, single-line text, and multiline text are supported when the PDF exposes them normally.
Can I keep form fields editable?
Yes. Choose Keep form fields editable before downloading.
What does flattening a PDF form mean?
Flattening turns supported form appearances into page content and removes those interactive fields. It is not cryptographic certification.
Will editing invalidate existing digital signatures?
It may. The editor displays this warning because modifying signed PDF bytes commonly invalidates an existing certificate signature.
Can I fill a password-protected PDF?
Not directly. The local save library does not decrypt protected PDFs; use Unlock PDF first where you are authorized to do so.
Are my PDFs or signatures uploaded?
No. The active fill-and-sign workflow loads, edits, and exports the PDF in your browser.
Does the tool work on mobile?
The responsive interface supports touch placement, though a larger screen is easier for precise positioning.
What are XFA forms?
XFA is a different, often dynamic form technology. This editor supports AcroForms, not XFA-only forms.
Is there a file-size limit?
Yes. PDFs are limited to 100 MB and 500 pages to reduce browser memory failures.