Sign a PDF in Your Browser
Basic e-signature
This places a picture of your signature onto the page, which is what almost every e-signature workflow actually needs and what the free tier of the big services gives you. It is not a cryptographic digital signature: there is no certificate and nothing a viewer can verify. Anyone telling you a browser tool gives you the latter for free is overstating it. The upside here is that your contract is never uploaded to anyone.
What is PDF Signer?
Add your signature to a PDF by drawing it, typing your name, or uploading an image, then clicking where it should go. The document is opened and written entirely in this tab, which matters here more than almost anywhere else: the files people sign are contracts, offers and agreements, and every other free tool asks you to upload them first. Place as many signatures as you need across any pages, set the size and opacity, and download. Page rotation is handled, so a signature on a rotated page lands where you put it.
How do I use PDF Signer?
- Drop the PDF; every page is rendered for you to click on.
- Draw your signature, type your name, or upload an image of one.
- Click on a page where the signature should sit, and adjust the size.
- Apply the signature and download the signed PDF.
When should I use PDF Signer?
Use this for the everyday case of putting a visible signature on an agreement. To protect the signed result with a password, use Password Protector. To combine it with other documents, use PDF Merge. To fill in a scanned form first, use PDF Watermark for stamps or add text with a desktop editor.
Frequently asked questions
Is this a legally binding digital signature?
It places a picture of your signature onto the page. It is not a cryptographic digital signature: there is no certificate and nothing a PDF viewer can verify. That is also true of the free tier of most e-signature services, and for everyday agreements a visible signature is what is being asked for. If you specifically need a verifiable certificate-based signature, you need a certificate authority and a dedicated signing product.
What happens if the PDF is already digitally signed?
The tool detects that and warns you before you continue. Drawing anything onto the page changes the bytes the existing signature covers, so a viewer will mark that signature invalid afterwards. The visible signature remains, but verification fails. That is inherent to modifying a signed document, not a limitation of this tool.
Will the signature land correctly on a rotated page?
Yes. A page can carry a rotation flag that makes it display turned while its underlying coordinates stay unrotated, which is what makes signatures land in the wrong corner in naive tools. Rotation is accounted for, so the signature appears where you clicked.
Which signature method looks best?
Drawing with a trackpad or touchscreen looks the most natural. A photographed signature works well if it is a PNG with a transparent background; a photo of paper brings its background with it and will sit as a white box on the page. Typed signatures are the most legible but obviously look typed.
Can I put the signature on several pages?
Yes. Click each place you want it; every placement uses the same signature image, and clicking a placed signature removes it. Initialling every page of a contract is the usual reason.
Can I sign a password-protected PDF?
Not directly. Remove the password first with Password Remover, sign it, then protect it again with Password Protector if you still need to.
Is my file uploaded anywhere?
No. Everything runs in your browser. Your files never leave your device, and there is no server component for this tool.
Tools that pair well with PDF Signer
- Password Protect PDF add password encryption, free and in your browser.
- PDF Merge Tool combine multiple pdfs, free and in your browser.
- PDF Watermark Tool stamp every page, free and in your browser.
- PDF Metadata Editor edit title, author, tags, free and in your browser.