Add a Digital Signature to Your PDF for Free
Directly in Your Browser

Digital signature on a PDF using a qualified digital certificate, right in the Chrome browser

Sign any PDF document right in Chrome using your digital certificate - no need for Adobe Acrobat, nothing uploaded to any server. Sign for free, every day!

Everything you need to sign a PDF

Advanced Electronic Signature and Qualified Electronic Signature.

You're in Full Control: 100% Offline PDF Signing

Your PDF files never leave your machine. No sign-ups, no uploads, no cloud, no risks. You don't even need to create an account to get started.

Sign PDFs Without Adobe Acrobat

Add your signature directly to the PDF from the Chrome extension - no Acrobat Pro license, no heavy software to install.

Software or Hardware Certificate

Compatible with all installed digital certificates or USB tokens.

Batch Signing

Select dozens of PDF documents and sign them all at once. Available on the pro plan.

Important requirements

• You need a digital certificate because this solution lets you sign using the certificate.

How to Sign a PDF with a Digital Certificate

The complete step-by-step, from start to signed document.

01

Install the BrSign extension in Chrome

Free extension, one click to install from the Chrome Web Store.

02

Open the signing page and select your PDF

Choose the PDF file you want to sign.

03

Choose your digital certificate

Works with a certificate installed on your computer or on a USB token/card.

04

Place the signature seal on the document

Drag the seal to the position you want on the PDF.

05

Click sign

Done: your PDF is signed with legal validity, without leaving the browser.

Frequently asked questions

How do I sign a PDF with a digital certificate?

Install the BrSign extension in Chrome, open your document on the signing page, choose your digital certificate, and click sign. The whole process takes less than a minute and requires no extra software.

Do I need Adobe Acrobat to sign a PDF?

No. The BrSign extension signs your PDF directly in the browser using your digital certificate. You don't need to buy or install Adobe Acrobat.

Is a PDF signed with the extension legally valid?

Yes. Signing with a qualified digital certificate gives the document a qualified electronic signature, with the same legal validity as a notarized handwritten signature.

Is it safe to sign a PDF through a browser extension?

Yes. The whole process is 100% offline: your document and your certificate never leave your machine or get uploaded to any server.

Ready to sign your PDF?

No credit card, no mandatory sign-up.
Your documents never leave your machine. 100% offline and secure.

Sign your PDF now