Sign PDF
Add your signature, initials, name, date or company stamp to any page.
Sign documents without printing them. Draw your signature with a mouse or finger, type it in a handwriting font, or upload an image, then place it anywhere.
How to sign a PDF
- Choose the PDF to sign.
- Draw, type or upload your signature, and add initials, name, date or a company stamp if needed.
- Click the page to place each item, then “Sign & download”.
Frequently asked questions
Is this a legally binding signature?
It adds a visual electronic signature, which many everyday agreements accept. Some documents require a certified digital signature instead.
How do I sign a PDF without printing it?
Open the PDF, create your signature by typing, drawing or uploading an image, click where it should go, and download the signed copy.
Can I sign on a phone or tablet?
Yes. Draw your signature with a finger, then tap the page to place it and drag to resize it to fit the signature line.
Can I add my initials and the date?
Yes. Besides your signature you can place initials, your printed name, a date, any other text and a company stamp image, on as many pages as you need.
Is this a digital signature?
No. It is an electronic signature: an image of your signature placed on the page, which is how most everyday contracts and forms are signed. A digital signature uses a certificate to prove who signed and that the file hasn’t changed.
Is it really free?
Yes. There is no sign-up, no daily limit and no watermark added to your files.
Are my files uploaded to a server?
No. ModifyPDF processes files with JavaScript inside your browser. Your documents never leave your device, and nothing is stored after you close the page.
Create your signature
Type your name and pick a handwriting style, draw with a mouse or finger, or upload an image of your signature. You can also place your initials, your printed name, a date or any text, and a company stamp image.
Signing a document
Click where each item should go, then drag and resize it to fit the signature line. Sign as many pages as you need before downloading. This adds a visual signature, which is how most everyday contracts and forms are signed.
Electronic vs. digital signatures
The signature added here is an electronic signature: an image of your signature placed on the page, which is widely accepted for everyday agreements, forms and HR documents. A digital signature is different: it uses a certificate to cryptographically prove who signed and that the file hasn’t changed since. Our guide to electronic vs. digital signatures explains when each is needed.
Good practice
Keep a copy of every document you sign, and check whether the recipient has specific requirements, such as a wet signature, a witness or a particular e-signature service, for legal documents like wills, deeds and some government forms.