Yes! The visible signature stamp is added 100% locally in your browser.

Can I sign a PDF that is already digitally signed?

You can add a visible signature stamp to a new copy, but an existing cryptographic digital signature will usually become invalid when the PDF is changed.

Is this a legal digital signature?

No. FilKlar adds a visible signature stamp. Legal/eID-based signing requires a qualified signature service.

Sign PDF

Sign PDF with digital signature. FilKlar Pro.

Processed locally — nothing is uploaded

Drop file(s) here

Processed locally — nothing is uploaded

How it works

1Choose file(s)

2Adjust settings

3Download

Sign PDF

Drop file(s) here

How it works

FAQ

Is this safe?

Can I sign a PDF that is already digitally signed?

Is this a legal digital signature?